{"id":73743,"date":"2026-04-01T15:55:00","date_gmt":"2026-04-01T20:55:00","guid":{"rendered":"https:\/\/can.wrmeadows.com\/?p=73743"},"modified":"2026-04-08T14:27:04","modified_gmt":"2026-04-08T19:27:04","slug":"perminator-20-mil-underslab-vapour-barrier-canada","status":"publish","type":"post","link":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/","title":{"rendered":"PERMINATOR 20 MIL"},"content":{"rendered":"<p><a name=\"ds\"><\/a><\/p>\n<h3 class=\"section\">Product Data Sheet<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/can.wrmeadows.com\/pics\/hdgreen.jpg\" alt=\"Product Data, W. R. MEADOWS\" width=\"678\" height=\"150\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<table border=\"0\" width=\"100%\" cellspacing=\"2\" cellpadding=\"2\">\n<tbody>\n<tr>\n<td width=\"17%\"><strong><a href=\"https:\/\/can.wrmeadows.com\/data-sheets\/ca\/#0333\">03 33 00<\/a><br \/>\n<a href=\"https:\/\/can.wrmeadows.com\/data-sheets\/ca\/#072616\">07 26 16<\/a><\/strong><\/td>\n<td width=\"21%\">DATA SHEET 5243-464<\/td>\n<td width=\"18%\"><a href=\"https:\/\/can.wrmeadows.com\/data\/5243-464.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/can.wrmeadows.com\/pics\/pdfclick.gif\" alt=\"\" width=\"119\" height=\"23\" border=\"0\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>PERMINATOR<sub>\u00ae<\/sub> 20 MIL<\/strong><br \/>\n<strong>20 Mil Underslab Vapour Barrier<\/strong><\/p>\n<p><strong>DESCRIPTION<\/strong><\/p>\n<p>PERMINATOR underslab vapour barrier is a new generation of polyolefin-based resin\/chemical technology. PERMINATOR provides the vapour barrier industry with a highly effective, economical choice for helping to reduce the penetration of moisture and water vapour through the slab into the structure, thereby helping to reduce fungus, mildew, and mould growth.\u00a0 PERMINATOR also helps reduce radon gas from entering the structure.<\/p>\n<p>PERMINATOR is tough enough to withstand normal construction jobsite conditions and traffic.\u00a0 It will not crack, puncture, snag, split, or tear easily.<\/p>\n<p>PERMINATOR prevents uncontrolled moisture from entering the slab allowing the slab to maintain the maximum slab moisture emission rate and relative humidity level as allowed by flooring manufacturer\u2019s specifications.<\/p>\n<p>PERMINATOR (20 MIL) is furnished in 105\u2019 (32 m) long rolls.<\/p>\n<p>Installation is quick and easy. All joints\/seams, both side and end, should be overlapped 152.4 mm (6\u201d) and taped using 101.6 mm (4\u201d) wide <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/perminator-tape-canada\/\">PERMINATOR TAPE<\/a> from W. R. MEADOWS.\u00a0 PERMINATOR rolls fast and smoothly over level tamped soil or compacted fill.<\/p>\n<p><strong>USES<\/strong><\/p>\n<p>PERMINATOR underslab vapour barrier is primarily designed for underslab construction, where the soil has been tamped and levelled or compacted fill has been applied.\u00a0\u00a0 Sheets are unrolled as is or cut to size and installed using the overlapping method.\u00a0 Overlaps are 152.4 mm (6\u201d) wide and these seams are sealed using 101.6 mm (4\u201d) wide PERMINATOR TAPE.<\/p>\n<p>PERMINATOR can also be used as a protection course for waterproofing membranes.\u00a0 The 32 m (105\u2019) long sheets are unrolled as is or cut to size and installed using the overlapping method. Overlaps are 152.4 mm (6\u201d) wide and these seams are sealed using 101.6 mm (4\u201d) wide PERMINATOR TAPE.<\/p>\n<p>PERMINATOR can also be used as a protection course for waterproofing membranes.\u00a0 The desired sheet lengths are cut to size and retained at the top of the waterproofing membranes by PERMINATOR TAPE or <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/termination-bar-canada\/\">TERMINATION BAR<\/a> from W R. MEADOWS.\u00a0 The product can also be used in crawlspace applications.<\/p>\n<p><strong>FEATURES\/BENEFITS<\/strong><\/p>\n<ul>\n<li>Available in 32 m (105\u2019) long rolls<\/li>\n<li>Helps reduce the penetration of moisture and water vapour through the slab into the structure.<\/li>\n<li>Helps reduce fungus, mildew, and mould.<\/li>\n<li>Helps reduce radon gas from entering a structure.<\/li>\n<li>Resistant to methane gas.<\/li>\n<li>Tough enough to withstand normal construction jobsite conditions and traffic \u2026 will not crack, puncture, snag, split, or tear easily.<\/li>\n<li>Installs quickly and easily over tamped grade \u2026 no gravel, fill, or sand needed.<\/li>\n<li>PERMINATOR prevents uncontrolled moisture from entering the slab allowing the slab to maintain the maximum slab moisture emission rate and relative humidity level as allowed by flooring manufacturers\u2019 specifications.<\/li>\n<li>20 mil thickness clearly marked on membrane for easy visual identification on jobsite<\/li>\n<li>VOC content is 0 g\/L.<\/li>\n<\/ul>\n<p><strong>PACKAGING<\/strong><\/p>\n<p>4.3 m (14\u2019), 32 m (105\u2019) long<\/p>\n<p><strong>SPECIFICATIONS\/STANDARDS<\/strong><\/p>\n<ul>\n<li>Meets or exceeds all requirements of ASTM E1745 Class A, B &amp; C.<\/li>\n<li>ACI 302.2R: Guide for Concrete Slabs that Receive Moisture Sensitive Flooring Materials<\/li>\n<\/ul>\n<p><strong>TECHNICAL DATA<\/strong><\/p>\n<table class=\"table\">\n<tbody>\n<tr>\n<td width=\"226\">PROPERTY<\/td>\n<td width=\"226\">TEST METHOD<\/td>\n<td width=\"226\">TYPICAL TEST RESULTS<\/td>\n<\/tr>\n<tr>\n<td width=\"226\">Water Vapor Permeance:<\/td>\n<td width=\"226\">ASTM E96<\/td>\n<td width=\"226\">0.005 perms<\/td>\n<\/tr>\n<tr>\n<td width=\"226\">Tensile Strength:<\/td>\n<td width=\"226\">ASTM E154, Section 9<\/td>\n<td width=\"226\">105 lbf\/in<\/td>\n<\/tr>\n<tr>\n<td width=\"226\">Puncture Resistance:<\/td>\n<td width=\"226\">ASTM D1709, Method B<\/td>\n<td width=\"226\">&gt;3500 g<\/td>\n<\/tr>\n<tr>\n<td width=\"226\">Methane Gas Permeability:<\/td>\n<td width=\"226\">ASTM D1434, Procedure V<\/td>\n<td width=\"226\">1.815&#215;10<sup>-1<\/sup> GTR (L\/m<sup>2<\/sup>*24hr)<\/td>\n<\/tr>\n<tr>\n<td width=\"226\">Radon Transmittance<sup>1<\/sup>:<\/td>\n<td width=\"226\">SP Method No. 3873<\/td>\n<td width=\"226\">&lt;3.0&#215;10<sup>-9 <\/sup>m\/s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Footnote 1: SP Method No. 3873 cannot report radon transmittance values lower than 3.0 \u00d7 10\u207b\u2079 m\/s, as normal indoor background radon levels interfere with measurements below this threshold.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"73744\" data-permalink=\"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/screenshot-2026-04-01-154438\/\" data-orig-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-01-154438.png\" data-orig-size=\"723,416\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"overlap illustration\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-01-154438.png\" class=\"alignnone size-full wp-image-73744\" src=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-01-154438.png\" alt=\"overlap illustration\" width=\"723\" height=\"416\" srcset=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-01-154438.png 723w, https:\/\/can.wrmeadows.com\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-01-154438-300x173.png 300w, https:\/\/can.wrmeadows.com\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-01-154438-250x144.png 250w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/p>\n<p><strong>APPLICATION<\/strong><\/p>\n<p><strong>Surface Preparation \u2026 <\/strong>Level, tamp, or roll earth or granular material beneath the slab base as specified by supplied architectural drawings.\u00a0 Follow ASTM E1643-10 (standard practice and procedure for installation of vapour retarder used in contact with earth or fill under concrete slabs).\u00a0 Reference ACI 302.1R-04: Chapter 4, Section 4.1.4 \u2013 Base Material for sub-grade preparation prior to placement of PERMINATOR.<\/p>\n<p><strong>Horizontal Application \u2026 <\/strong>Unroll PERMINATOR over the area where the slab is to be poured.\u00a0 Cut to size if necessary.\u00a0 PERMINATOR should completely cover the pour area.\u00a0 All joints\/seams, both side and end, should be overlapped 152.4 mm (6\u201d) and taped using 101.6 mm (4\u201d) wide PERMINATOR TAPE.\u00a0 (Note:\u00a0 The PERMINATOR TAPE area of adhesion should be free from dust, dirt, and moisture to allow maximum adhesion of the pressure-sensitive tape).<\/p>\n<p>The most efficient installation method includes placing PERMINATOR on top of the footing and against the vertical wall. This will sandwich PERMINATOR between the footing, vertical wall, and poured concrete floor.\u00a0 (See illustration.)\u00a0 This will help protect the concrete slab from external moisture sources once the slab has been placed.<\/p>\n<p>Before placing concrete slab, make sure all penetrations, block outs, and damaged areas are repaired\/addressed.<\/p>\n<p>Numerous municipal building codes do not allow the placement of vapour barriers over the footing, due to breaking of the bond between the wall and footing.\u00a0 Although this is not an optimal application method, W. R. MEADOWS approves this alternate method when required by building code.<\/p>\n<p><strong>Figure 1: Collar<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"24985\" data-permalink=\"https:\/\/can.wrmeadows.com\/en-ca\/perminator-underslab-vapour-barrier-canada\/perminator-circumference\/\" data-orig-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/perminator-circumference.jpg\" data-orig-size=\"537,240\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;Brad Hull&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1464276053&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"perminator circumference\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/perminator-circumference.jpg\" class=\"alignnone size-full wp-image-24985\" src=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/perminator-circumference.jpg\" alt=\"perminator circumference\" width=\"537\" height=\"240\" srcset=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/perminator-circumference.jpg 537w, https:\/\/can.wrmeadows.com\/wp-content\/uploads\/perminator-circumference-300x134.jpg 300w\" sizes=\"auto, (max-width: 537px) 100vw, 537px\" \/><\/p>\n<p><strong>Seal All Protrusions \u2026 <\/strong>Cut a slit around pipes, ductwork, rebar, and wire penetrations to place the initial layer of PERMINATOR.\u00a0 To further protect the concrete slab from external moisture sources, use a piece of PERMINATOR and place a collar around these as well.<\/p>\n<ol>\n<li>Cut a piece of PERMINATOR a minimum width of 304.8 mm (12\u201d). The length should be 1.5 times the pipe circumference.\u00a0 With a roofer\u2019s knife or scissors, cut \u201cfingers\u201d half the width of the film.\u00a0 See figure 1.<\/li>\n<li>Wrap around and tape the collar onto the pipe and completely tape fingers to the bottom layer of PERMINATOR, as shown in figure 2.<\/li>\n<\/ol>\n<p>In the event that PERMINATOR is damaged during or after installation, repairs must be made.\u00a0 Cut a piece of PERMINATOR large enough to cover any damage by a minimum overlap of 152.4 mm (6\u201d) in all directions.\u00a0 Clean all adhesion areas of dust, dirt, and moisture.\u00a0 Tape down all edges using PERMINATOR TAPE.<\/p>\n<p>NOTE:\u00a0 It is not necessary to overlay PERMINATOR with gravel or sand.\u00a0 PERMINATOR is tough enough to withstand normal construction abuse and traffic.\u00a0 Most flooring companies recommend the placement of the concrete slab directly on the vapour barrier.\u00a0 We agree, since this eliminates the potential for trapping moisture in a blotter-effect, causing it to resurface through the slab into the flooring systems.\u00a0 Consult local building codes and regulations, plus architectural and design firm guidelines, prior to application.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" title=\"Vapor Barrier Perminator Collar Installation\" src=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/vapor-barrier-perminator-collar-installation.jpg\" alt=\"Vapor Barrier Perminator Collar Installation Drawing\" width=\"597\" height=\"335\" \/><\/p>\n<p><strong>Vertical Wall Application \u2026 <\/strong>Install the appropriate W. R. MEADOWS waterproofing membrane, such as <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/mel-rol-canada\/\">MEL-ROL<sub>\u00ae<\/sub><\/a>, <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/mel-rol-lm-canada\/\">MEL-ROL LM<\/a>, <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/hydralastic-836-canada\/\">HYDRALASTIC 836<\/a>, <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/meadow-pruf-co-spray\/\">MEADOW-PRUF<sub>\u00ae<\/sub> CO-SPRAY<\/a>, or <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/vertibarrier-ns-canada\/\">VERTIBARRIER NS<\/a> according to installation instructions.\u00a0 While the membrane is still tacky, install PERMINATOR as a protective course over the applied waterproofing membrane.\u00a0 Using TERMINATION BAR with concrete nails or PERMINATOR TAPE at the termination of the waterproofing membrane is advisable in some applications.\u00a0 Supervised care must be taken during backfilling against the material so that it is not damaged or punctured.\u00a0 If damage occurs, patch using the techniques outlined previously.\u00a0 When applying PERMINATOR TAPE to foundation walls, <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/mel-prime-canada\/\">MEL-PRIME<sub>\u2122<\/sub><\/a> adhesive from W. R. MEADOWS may be used to increase bond.<\/p>\n<p><strong>ACCESSORIES<\/strong><\/p>\n<p><a href=\"https:\/\/can.wrmeadows.com\/en-ca\/mel-drain-canada\/\">MEL-DRAIN<sub>\u00ae<\/sub><\/a> rolled matrix drainage system is designed to remove moisture from around footings and relieve hydrostatic head pressures.\u00a0 Several different versions are available.<\/p>\n<p>MEL-ROL LM or <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/pointing-mastic-canada\/\">POINTING MASTIC<\/a> may be used for small stakes, small pipe, and rebar penetrations.\u00a0 Cut PERMINATOR just big enough for the penetration.\u00a0 Liberally apply MEL-ROL LM or POINTING MASTIC around the penetration to keep the integrity of the PERMINATOR membrane intact.\u00a0 MEL-ROL LM can be applied by brush, roller, or sprayer.\u00a0 POINTING MASTIC can be applied by caulking gun or trowel.<\/p>\n<p>MEL-ROL LM, POINTING MASTIC, and <a href=\"https:\/\/can.wrmeadows.com\/en-ca\/mel-rol-liquid-membrane-canada\/\">MEL-ROL LIQUID MEMBRANE<\/a> (two-component) may be used for stakes, small pipe, and rebar penetrations.\u00a0 Cut PERMINATOR just big enough for the penetration.\u00a0 Liberally apply MEL-ROL LM, POINTING MASTIC, or MEL-ROL LIQUID MEMBRANE around the penetration to keep the integrity of the PERMINATOR membrane intact.\u00a0 MEL-ROL LM can be applied by brush, roller, or sprayer.\u00a0 POINTING MASTIC can be applied by caulking gun or trowel.\u00a0 MEL-ROL LIQUID MEMBRANE can be applied by trowel.<\/p>\n<p>PERMINATOR TAPE is a self-adhesive tape for use in sealing vapour retarder seams and attachment to footings, protrusions, etc.\u00a0 It is offered in 10 cm (4\u201d) widths and roll lengths of 55 m (180\u2019)\/roll.\u00a0 It is packaged twelve rolls per carton.\u00a0 Coverage:\u00a0 One box of tape will adhere approximately 10 rolls of PERMINATOR.<\/p>\n<p>TERMINATION BAR is provided in 3 m (10\u2019) lengths to attach PERMINATOR to walls as a protection course for vertical surface waterproofing applications.<\/p>\n<p><strong>LIMITATIONS\/PRECAUTIONS<\/strong><\/p>\n<p>PERMINATOR underslab vapour barrier does not negate the need for relief of hydrostatic heads.\u00a0 A complete drain tile system should be placed on the exterior of the footing and, in severe cases, on the interior of the footing as well.\u00a0 For maximum concrete performance and durability, the concrete floor slab design should provide for the lowest possible slump, yet assure complete hydration of the concrete.\u00a0 Refer to <a href=\"https:\/\/can.wrmeadows.com\/Msds-2K-CAN\/5243-464.pdf\">Safety Data Sheet<\/a> for complete health and safety information.<\/p>\n<p><strong>MASTERFORMAT NUMBER AND TITLE<\/strong><\/p>\n<p>03 33 00 &#8211; Architectural Concrete<br \/>\n07 26 16 &#8211; Below-Grade Vapour Retarders<\/p>\n<p>2026-03<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/can.wrmeadows.com\/pics\/foot-can.jpg\" alt=\"\" width=\"640\" height=\"98\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/can.wrmeadows.com\/pics\/footer-can.jpg\" alt=\"warranty\" width=\"614\" height=\"212\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<h3 class=\"section\">PERMINATOR Resources<\/h3>\n<div class=\"featured-posts\"><div class=\"item one-third first\"><a class=\"image-link\" href=\"https:\/\/can.wrmeadows.com\/concrete-vapor-barriers\/perminator-installation-instructions\/\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"176\" src=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/perminator-installation-instructions-1-250x176.jpg\" class=\"attachment-ea_summary size-ea_summary wp-image-9999\" alt=\"\" data-attachment-id=\"9999\" data-permalink=\"https:\/\/can.wrmeadows.com\/en-ca\/concrete-vapor-barriers\/perminator-installation-instructions\/perminator-installation-instructions-1\/\" data-orig-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/perminator-installation-instructions-1.jpg\" data-orig-size=\"400,176\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"perminator-installation-instructions-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/perminator-installation-instructions-1.jpg\" \/><\/a><h4><a href=\"https:\/\/can.wrmeadows.com\/concrete-vapor-barriers\/perminator-installation-instructions\/\">Vapor Barrier Installation Instructions &#8211; PERMINATOR<\/a><\/h4><p>PERMINATOR underslab vapor barrier\/retarder is a new generation of polyolefin-based resin\/chemical technology. PERMINATOR&#8217;s new resin technology allows dramatically greater puncture&hellip;<\/p>\n<p><a href=\"https:\/\/can.wrmeadows.com\/concrete-vapor-barriers\/perminator-installation-instructions\/\" class=\"button\">Learn More<\/a><\/p><\/div><div class=\"item one-third\"><a class=\"image-link\" href=\"https:\/\/can.wrmeadows.com\/white-paper-under-slab-vapor-barriers-retarders\/\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"180\" src=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Concrete-Vapor-Barrier-Project-SAIT-Polytechnic-Campus-feat-250x180.jpg\" class=\"attachment-ea_summary size-ea_summary wp-image-36697\" alt=\"Concrete-Vapor-Barrier-Project---SAIT-Polytechnic-Campus\" data-attachment-id=\"36697\" data-permalink=\"https:\/\/can.wrmeadows.com\/en-ca\/sait-polytechnic-campus\/concrete-vapor-barrier-project-sait-polytechnic-campus-feat\/\" data-orig-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Concrete-Vapor-Barrier-Project-SAIT-Polytechnic-Campus-feat.jpg\" data-orig-size=\"450,338\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Concrete-Vapor-Barrier-Project&amp;#8212;SAIT-Polytechnic-Campus-feat\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Concrete-Vapor-Barrier-Project-SAIT-Polytechnic-Campus-feat.jpg\" \/><\/a><h4><a href=\"https:\/\/can.wrmeadows.com\/white-paper-under-slab-vapor-barriers-retarders\/\">Under Slab Vapor Retarders\/Barriers (White Paper)<\/a><\/h4><p>Perm Ratings and Puncture Resistance \u2013 Striking the Right Balance for Optimum Performance Print Version OVERVIEW: The use of under&hellip;<\/p>\n<p><a href=\"https:\/\/can.wrmeadows.com\/white-paper-under-slab-vapor-barriers-retarders\/\" class=\"button\">Learn More<\/a><\/p><\/div><div class=\"item one-third\"><a class=\"image-link\" href=\"https:\/\/can.wrmeadows.com\/va-portland-health-care-system-fairfield-clinic\/\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"180\" src=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Vapor-Barrier-Project-VA-Portland-Health-Care-System-4.1-250x180.jpg\" class=\"attachment-ea_summary size-ea_summary wp-image-29070\" alt=\"\" data-attachment-id=\"29070\" data-permalink=\"https:\/\/can.wrmeadows.com\/en-ca\/va-portland-health-care-system-fairfield-clinic\/vapor-barrier-project-va-portland-health-care-system-4-1\/\" data-orig-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Vapor-Barrier-Project-VA-Portland-Health-Care-System-4.1.jpg\" data-orig-size=\"480,556\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Vapor-Barrier-Project-VA-Portland-Health-Care-System-4.1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Vapor-Barrier-Project-VA-Portland-Health-Care-System-4.1.jpg\" \/><\/a><h4><a href=\"https:\/\/can.wrmeadows.com\/va-portland-health-care-system-fairfield-clinic\/\">VA Portland Health Care System<\/a><\/h4><p>The 26,000 square foot Fairview clinic is replacing the east CBOC with nearly four times the space. The new facility&hellip;<\/p>\n<p><a href=\"https:\/\/can.wrmeadows.com\/va-portland-health-care-system-fairfield-clinic\/\" class=\"button\">Learn More<\/a><\/p><\/div><div class=\"item one-third first\"><a class=\"image-link\" href=\"https:\/\/can.wrmeadows.com\/fairplex-trade-and-conference-center\/\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"180\" src=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Fairplex-Conference-Center-Vapor-Barrier-Construction-Liquids-Project-feat-250x180.jpg\" class=\"attachment-ea_summary size-ea_summary wp-image-39567\" alt=\"Fairplex-Conference-Center-Vapor-Barrier-&amp;-Construction-Liquids-Project\" data-attachment-id=\"39567\" data-permalink=\"https:\/\/can.wrmeadows.com\/en-ca\/fairplex-trade-and-conference-center\/fairplex-conference-center-vapor-barrier-construction-liquids-project-feat\/\" data-orig-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Fairplex-Conference-Center-Vapor-Barrier-Construction-Liquids-Project-feat.jpg\" data-orig-size=\"600,449\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Fairplex-Conference-Center-Vapor-Barrier-&amp;#038;-Construction-Liquids-Project\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Fairplex-Conference-Center-Vapor-Barrier-Construction-Liquids-Project-feat.jpg\" \/><\/a><h4><a href=\"https:\/\/can.wrmeadows.com\/fairplex-trade-and-conference-center\/\">Fairplex Trade and Conference Center<\/a><\/h4><p>This project was submitted for LEED Silver certification.<\/p>\n<p><a href=\"https:\/\/can.wrmeadows.com\/fairplex-trade-and-conference-center\/\" class=\"button\">Learn More<\/a><\/p><\/div><div class=\"item one-third\"><a class=\"image-link\" href=\"https:\/\/can.wrmeadows.com\/sait-polytechnic-campus\/\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"180\" src=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Concrete-Vapor-Barrier-Project-SAIT-Polytechnic-Campus-feat-250x180.jpg\" class=\"attachment-ea_summary size-ea_summary wp-image-36697\" alt=\"Concrete-Vapor-Barrier-Project---SAIT-Polytechnic-Campus\" data-attachment-id=\"36697\" data-permalink=\"https:\/\/can.wrmeadows.com\/en-ca\/sait-polytechnic-campus\/concrete-vapor-barrier-project-sait-polytechnic-campus-feat\/\" data-orig-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Concrete-Vapor-Barrier-Project-SAIT-Polytechnic-Campus-feat.jpg\" data-orig-size=\"450,338\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Concrete-Vapor-Barrier-Project&amp;#8212;SAIT-Polytechnic-Campus-feat\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/Concrete-Vapor-Barrier-Project-SAIT-Polytechnic-Campus-feat.jpg\" \/><\/a><h4><a href=\"https:\/\/can.wrmeadows.com\/sait-polytechnic-campus\/\">SAIT Polytechnic Campus<\/a><\/h4><p>PERMINATOR and PERMINATOR TAPE were installed in this large Canadian project.<\/p>\n<p><a href=\"https:\/\/can.wrmeadows.com\/sait-polytechnic-campus\/\" class=\"button\">Learn More<\/a><\/p><\/div><div class=\"item one-third\"><a class=\"image-link\" href=\"https:\/\/can.wrmeadows.com\/va-hospital-building-31\/\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"180\" src=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/VA-Hospital-Building-31-Vapor-Barrier-Project-1-250x180.jpg\" class=\"attachment-ea_summary size-ea_summary wp-image-33266\" alt=\"VA Hospital Building 31 Project in Fresno, California\" data-attachment-id=\"33266\" data-permalink=\"https:\/\/can.wrmeadows.com\/en-ca\/va-hospital-building-31\/va-hospital-building-31-vapor-barrier-project-1\/\" data-orig-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/VA-Hospital-Building-31-Vapor-Barrier-Project-1.jpg\" data-orig-size=\"389,275\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"VA Hospital Building 31 Project in Fresno, California\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/VA-Hospital-Building-31-Vapor-Barrier-Project-1.jpg\" \/><\/a><h4><a href=\"https:\/\/can.wrmeadows.com\/va-hospital-building-31\/\">VA Hospital Building 31<\/a><\/h4><p>Over 15,000 square feet of our PERMINATOR HP vapor barrier and accessories was used on the VA Hospital Building project.<\/p>\n<p><a href=\"https:\/\/can.wrmeadows.com\/va-hospital-building-31\/\" class=\"button\">Learn More<\/a><\/p><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>PERMINATOR 20 MIL is a heavy-duty underslab vapour barrier designed to control moisture and water vapour migration from the ground into concrete slabs. Made with advanced polyolefin resin technology, it provides very low water vapour permeance while maintaining high puncture and tear resistance for typical jobsite conditions. When installed beneath slabs-on-grade, PERMINATOR helps limit moisture transmission that can affect flooring systems and interior environments, and it is commonly specified where control of vapour, radon, methane, and soil moisture is required.<\/p>\n","protected":false},"author":1,"featured_media":20074,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[164,230],"tags":[],"class_list":{"0":"post-73743","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-sheet-en-ca","8":"category-vapor-barriers-en-ca","9":"entry"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PERMINATOR 20 MIL (Canada) - 20 Mil Underslab Vapour Barrier - W. R. Meadows Canada<\/title>\n<meta name=\"description\" content=\"PERMINATOR 20 MIL is a heavy-duty underslab vapour barrier designed to control moisture and water vapour migration from the ground into concrete slabs. Made with advanced polyolefin resin technology, it provides very low water vapour permeance while maintaining high puncture and tear resistance for typical jobsite conditions. When installed beneath slabs-on-grade, PERMINATOR helps limit moisture transmission that can affect flooring systems and interior environments, and it is commonly specified where control of vapour, radon, methane, and soil moisture is required.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PERMINATOR 20 MIL (Canada)\" \/>\n<meta property=\"og:description\" content=\"PERMINATOR 20 MIL is a heavy-duty underslab vapour barrier designed to control moisture and water vapour migration from the ground into concrete slabs. Made with advanced polyolefin resin technology, it provides very low water vapour permeance while maintaining high puncture and tear resistance for typical jobsite conditions. When installed beneath slabs-on-grade, PERMINATOR helps limit moisture transmission that can affect flooring systems and interior environments, and it is commonly specified where control of vapour, radon, methane, and soil moisture is required.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/\" \/>\n<meta property=\"og:site_name\" content=\"W. R. Meadows Canada\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/wrmeadows\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-01T20:55:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-08T19:27:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/vapor-barrier-retarder-perminator.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"320\" \/>\n\t<meta property=\"og:image:height\" content=\"240\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"W. R. MEADOWS\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@wrmeadows\" \/>\n<meta name=\"twitter:site\" content=\"@wrmeadows\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"W. R. MEADOWS\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/\"},\"author\":{\"name\":\"W. R. MEADOWS\",\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/#\\\/schema\\\/person\\\/4240984224f9be9b44d719ddbb989033\"},\"headline\":\"PERMINATOR 20 MIL\",\"datePublished\":\"2026-04-01T20:55:00+00:00\",\"dateModified\":\"2026-04-08T19:27:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/\"},\"wordCount\":1455,\"publisher\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/can.wrmeadows.com\\\/wp-content\\\/uploads\\\/vapor-barrier-retarder-perminator.jpg\",\"articleSection\":[\"Sheet Waterproofing\",\"Vapour Barriers\"],\"inLanguage\":\"en-CA\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/\",\"url\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/\",\"name\":\"PERMINATOR 20 MIL (Canada) - 20 Mil Underslab Vapour Barrier - W. R. Meadows Canada\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/can.wrmeadows.com\\\/wp-content\\\/uploads\\\/vapor-barrier-retarder-perminator.jpg\",\"datePublished\":\"2026-04-01T20:55:00+00:00\",\"dateModified\":\"2026-04-08T19:27:04+00:00\",\"description\":\"PERMINATOR 20 MIL is a heavy-duty underslab vapour barrier designed to control moisture and water vapour migration from the ground into concrete slabs. Made with advanced polyolefin resin technology, it provides very low water vapour permeance while maintaining high puncture and tear resistance for typical jobsite conditions. When installed beneath slabs-on-grade, PERMINATOR helps limit moisture transmission that can affect flooring systems and interior environments, and it is commonly specified where control of vapour, radon, methane, and soil moisture is required.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/#breadcrumb\"},\"inLanguage\":\"en-CA\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-CA\",\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/#primaryimage\",\"url\":\"https:\\\/\\\/can.wrmeadows.com\\\/wp-content\\\/uploads\\\/vapor-barrier-retarder-perminator.jpg\",\"contentUrl\":\"https:\\\/\\\/can.wrmeadows.com\\\/wp-content\\\/uploads\\\/vapor-barrier-retarder-perminator.jpg\",\"width\":320,\"height\":240,\"caption\":\"Vapor Barrier & Vapor Retarder Perminator\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/perminator-20-mil-underslab-vapour-barrier-canada\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Construction Products\",\"item\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/c\\\/construction-products-en-ca\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Vapour Barriers\",\"item\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/c\\\/construction-products-en-ca\\\/vapor-barriers-en-ca\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"PERMINATOR 20 MIL (Canada)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/#website\",\"url\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/\",\"name\":\"W. R. Meadows Canada\",\"description\":\"Concrete Construction Products Manufacturer\",\"publisher\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-CA\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/#organization\",\"name\":\"W. R. Meadows Canada\",\"url\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-CA\",\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/can.wrmeadows.com\\\/wp-content\\\/uploads\\\/logo-3.jpg\",\"contentUrl\":\"https:\\\/\\\/can.wrmeadows.com\\\/wp-content\\\/uploads\\\/logo-3.jpg\",\"width\":709,\"height\":709,\"caption\":\"W. R. Meadows Canada\"},\"image\":{\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/wrmeadows\",\"https:\\\/\\\/x.com\\\/wrmeadows\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/w-r-meadows-inc\",\"https:\\\/\\\/www.youtube.com\\\/WrmeadowsTraining\",\"https:\\\/\\\/www.instagram.com\\\/wrmeadowsinc\\\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/can.wrmeadows.com\\\/en-ca\\\/#\\\/schema\\\/person\\\/4240984224f9be9b44d719ddbb989033\",\"name\":\"W. R. MEADOWS\",\"description\":\"W. R. MEADOWS, INC. designs, manufactures, and markets high-quality building materials for today's construction professionals. Products are sold through an authorized distribution network. The family-owned and operated company focuses on product quality, exceptional service, and trusted integrity since its founding in 1926. About Us | Vapor Barriers | Air Barriers | Concrete Expansion Joints | All Construction Products\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"PERMINATOR 20 MIL (Canada) - 20 Mil Underslab Vapour Barrier - W. R. Meadows Canada","description":"PERMINATOR 20 MIL is a heavy-duty underslab vapour barrier designed to control moisture and water vapour migration from the ground into concrete slabs. Made with advanced polyolefin resin technology, it provides very low water vapour permeance while maintaining high puncture and tear resistance for typical jobsite conditions. When installed beneath slabs-on-grade, PERMINATOR helps limit moisture transmission that can affect flooring systems and interior environments, and it is commonly specified where control of vapour, radon, methane, and soil moisture is required.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/","og_locale":"en_US","og_type":"article","og_title":"PERMINATOR 20 MIL (Canada)","og_description":"PERMINATOR 20 MIL is a heavy-duty underslab vapour barrier designed to control moisture and water vapour migration from the ground into concrete slabs. Made with advanced polyolefin resin technology, it provides very low water vapour permeance while maintaining high puncture and tear resistance for typical jobsite conditions. When installed beneath slabs-on-grade, PERMINATOR helps limit moisture transmission that can affect flooring systems and interior environments, and it is commonly specified where control of vapour, radon, methane, and soil moisture is required.","og_url":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/","og_site_name":"W. R. Meadows Canada","article_publisher":"https:\/\/www.facebook.com\/wrmeadows","article_published_time":"2026-04-01T20:55:00+00:00","article_modified_time":"2026-04-08T19:27:04+00:00","og_image":[{"width":320,"height":240,"url":"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/vapor-barrier-retarder-perminator.jpg","type":"image\/jpeg"}],"author":"W. R. MEADOWS","twitter_card":"summary_large_image","twitter_creator":"@wrmeadows","twitter_site":"@wrmeadows","twitter_misc":{"Written by":"W. R. MEADOWS","Est. reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/#article","isPartOf":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/"},"author":{"name":"W. R. MEADOWS","@id":"https:\/\/can.wrmeadows.com\/en-ca\/#\/schema\/person\/4240984224f9be9b44d719ddbb989033"},"headline":"PERMINATOR 20 MIL","datePublished":"2026-04-01T20:55:00+00:00","dateModified":"2026-04-08T19:27:04+00:00","mainEntityOfPage":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/"},"wordCount":1455,"publisher":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/#organization"},"image":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/#primaryimage"},"thumbnailUrl":"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/vapor-barrier-retarder-perminator.jpg","articleSection":["Sheet Waterproofing","Vapour Barriers"],"inLanguage":"en-CA"},{"@type":"WebPage","@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/","url":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/","name":"PERMINATOR 20 MIL (Canada) - 20 Mil Underslab Vapour Barrier - W. R. Meadows Canada","isPartOf":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/#website"},"primaryImageOfPage":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/#primaryimage"},"image":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/#primaryimage"},"thumbnailUrl":"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/vapor-barrier-retarder-perminator.jpg","datePublished":"2026-04-01T20:55:00+00:00","dateModified":"2026-04-08T19:27:04+00:00","description":"PERMINATOR 20 MIL is a heavy-duty underslab vapour barrier designed to control moisture and water vapour migration from the ground into concrete slabs. Made with advanced polyolefin resin technology, it provides very low water vapour permeance while maintaining high puncture and tear resistance for typical jobsite conditions. When installed beneath slabs-on-grade, PERMINATOR helps limit moisture transmission that can affect flooring systems and interior environments, and it is commonly specified where control of vapour, radon, methane, and soil moisture is required.","breadcrumb":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/#breadcrumb"},"inLanguage":"en-CA","potentialAction":[{"@type":"ReadAction","target":["https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/"]}]},{"@type":"ImageObject","inLanguage":"en-CA","@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/#primaryimage","url":"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/vapor-barrier-retarder-perminator.jpg","contentUrl":"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/vapor-barrier-retarder-perminator.jpg","width":320,"height":240,"caption":"Vapor Barrier & Vapor Retarder Perminator"},{"@type":"BreadcrumbList","@id":"https:\/\/can.wrmeadows.com\/en-ca\/perminator-20-mil-underslab-vapour-barrier-canada\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/can.wrmeadows.com\/en-ca\/"},{"@type":"ListItem","position":2,"name":"Construction Products","item":"https:\/\/can.wrmeadows.com\/en-ca\/c\/construction-products-en-ca\/"},{"@type":"ListItem","position":3,"name":"Vapour Barriers","item":"https:\/\/can.wrmeadows.com\/en-ca\/c\/construction-products-en-ca\/vapor-barriers-en-ca\/"},{"@type":"ListItem","position":4,"name":"PERMINATOR 20 MIL (Canada)"}]},{"@type":"WebSite","@id":"https:\/\/can.wrmeadows.com\/en-ca\/#website","url":"https:\/\/can.wrmeadows.com\/en-ca\/","name":"W. R. Meadows Canada","description":"Concrete Construction Products Manufacturer","publisher":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/can.wrmeadows.com\/en-ca\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-CA"},{"@type":"Organization","@id":"https:\/\/can.wrmeadows.com\/en-ca\/#organization","name":"W. R. Meadows Canada","url":"https:\/\/can.wrmeadows.com\/en-ca\/","logo":{"@type":"ImageObject","inLanguage":"en-CA","@id":"https:\/\/can.wrmeadows.com\/en-ca\/#\/schema\/logo\/image\/","url":"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/logo-3.jpg","contentUrl":"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/logo-3.jpg","width":709,"height":709,"caption":"W. R. Meadows Canada"},"image":{"@id":"https:\/\/can.wrmeadows.com\/en-ca\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/wrmeadows","https:\/\/x.com\/wrmeadows","https:\/\/www.linkedin.com\/company\/w-r-meadows-inc","https:\/\/www.youtube.com\/WrmeadowsTraining","https:\/\/www.instagram.com\/wrmeadowsinc\/"]},{"@type":"Person","@id":"https:\/\/can.wrmeadows.com\/en-ca\/#\/schema\/person\/4240984224f9be9b44d719ddbb989033","name":"W. R. MEADOWS","description":"W. R. MEADOWS, INC. designs, manufactures, and markets high-quality building materials for today's construction professionals. Products are sold through an authorized distribution network. The family-owned and operated company focuses on product quality, exceptional service, and trusted integrity since its founding in 1926. About Us | Vapor Barriers | Air Barriers | Concrete Expansion Joints | All Construction Products"}]}},"jetpack_featured_media_url":"https:\/\/can.wrmeadows.com\/wp-content\/uploads\/vapor-barrier-retarder-perminator.jpg","_links":{"self":[{"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/posts\/73743","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/comments?post=73743"}],"version-history":[{"count":12,"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/posts\/73743\/revisions"}],"predecessor-version":[{"id":73799,"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/posts\/73743\/revisions\/73799"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/media\/20074"}],"wp:attachment":[{"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/media?parent=73743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/categories?post=73743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/can.wrmeadows.com\/en-ca\/wp-json\/wp\/v2\/tags?post=73743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}