Technical Bulletin: DOW Thermax – Jensen Hughes

(See Tables 2 and 3 for additional wall components)

2  – Concrete Masonry wall 3 – Standard clay brick wall 4 – Adobe block wall

5 – Steel studs: minimum 3 5/8-inch depth, minimum 20-guage at a maximum of 24-inch OC with lateral bracing every 4 ft. vertically with:

a) One layer – 5/8-inch thick Type X or 1/2-inch thick Type X Gypsum wallboard on interior face of studs, or

b) W.R. Grace’s Monokote Z-3306 installed at a minimum of 3/8 inch thickness over cavity insulation (Item 2) or Thermax_™, or

c)  Isolatek International’s CAFCO – TB 415 installed at a minimum of 3/8 inch thickness over cavity insulation (Item 2) or Thermax_™, or

d) International Cellulose Corporation’s Ure-K Thermal Barrier System installed at a minimum of 1.25 inch thickness over cavity insulation (Item 2) or Thermax_™

e) Specialty Products, Inc. Flame Seal-TB coating applied at a wet mil thickness of 25 mils (18 mils dry, 65 ft²/gal) over cavity insulation (Item 2)

f)  International Fireproof Technology, Inc. DC 315 applied at an application rate of 18 wet mils applied over 4 mils of primer which is applied over cavity insulation (Item 2)

2  – Full stud depth or less thickness of DOW STYROFOAM_™ Brand Spray Polyurethane CM 2060 or CM 2045 or CM 2030 applied using sheathing or insulation as substrate and covering the width of the cavity and inside the stud flange

3  – Fiberglass batt insulation (faced or unfaced)

2 – 1/2-inch thick, exterior type gypsum sheathing 3 – 5/8-inch thick, exterior type gypsum sheathing

2  – W. R. MEADOWS AIR-SHIELD_™ LMP (Gray)

W. R. MEADOWS AIR-SHIELD LMP (Black)

W. R. MEADOWS AIR-SHIELD TMP

W. R. MEADOWS AIR-SHIELD LSR

2  – Dow Thermax_™ Brand Rigid Insulation – Total thickness to be a minimum of 5/8 inch to maximum of 4.25 inches

3  – DOW STYROFOAM_™ Brand Spray Polyurethane CM 2060 or CM 2045 or CM 2030 – to a maximum of 3.5 inches thick

4  – Combination of Item 2 and Item 3 – Total thickness of combination not to exceed 4.25 inches and thickness of Item 3 not to exceed 3.5 inches

2  – Any shown in Table 4

1  – Dow LIQUIDARMOR_™ – CM Flashing and Sealant – max. 60-mil wet thickness, max. 5-inch width

2  – Dow LIQUIDARMOR_™ – LT Flashing and Sealant – max. 35-mil wet thickness, max. 5-inch width

3  – Dow WeatherMate_™ Flashing – max. 4-inch width

4  – Asphalt or Butyl-based flashing tape – max. 4-inch width

5  – Dow Great Stuff Pro_™ – Use on joints that are ≤ 1/4-inch, vertical joints must be staggered & remove significant excess from the face of the Thermax_™

Note: With either 3 or 4, a small amount of spray primer may be used in aid in adhesion; maximum 5-inch width.

–  Brick veneer anchors – standard types – installed maximum 24 inches OC vertically on each stud

–  Maximum 2-inch air gap between exterior insulation and brick

– Standard nominal 4-inch thick, clay brick

2  – Stucco – Minimum 3/4-inch thick, exterior cement plaster and lath. A secondary water-resistive barrier can be installed between the exterior insulation and the lath. The secondary water-resistive barrier shall not be full-coverage asphalt or butyl-based self-adhered membranes

3  – Minimum 2-inch thick, Limestone or natural stone veneer or minimum 1-1/2 inch thick cast artificial stone veneer. Any standard non-open-joint installation technique such as ship-lap, etc. can be used

4  – Terracotta cladding – Use any terracotta cladding system in which terracotta is minimum 1-1/4 inch thick. Any non-open-joint installation technique such as ship-lap, etc. can be used

5  – Concrete or precast concrete panels – Minimum 1.5-inch thick panel, with a 2-inch maximum air gap between exterior insulation and concrete panel. Any standard non-open-joint installation technique such as ship-lap, etc. can be used

a)  Dow LIQUIDARMOR_™ – CM Flashing and Sealant – max. 60-mil wet thickness, max. 12-inch width.

b)  Dow LIQUIDARMOR_™ – CM Flashing and Sealant – max. 35-mil wet thickness, max. 12-inch width.

c)  Limited amounts of acrylic, asphalt or butyl-based flashing tape – max. 12-inch width.

2  – Dow Thermax_™ Brand Rigid Insulation – Total thickness to be a minimum of 5/8 inch to maximum of 3 inches

1  – Dow LIQUIDARMOR_™ – CM Flashing and Sealant – max. 60-mil wet thickness, max. 5-inch width

2  – Dow LIQUIDARMOR_™ – LT Flashing and Sealant – max 35-mil wet thickness, max 5-inch width

3  – Dow WeatherMate_™ Flashing – max. 4-inch width

4  – Asphalt or Butyl-based flashing tape – max. 4-inch width

5  – Dow Great Stuff Pro_™ – Use on joints that are ≤ 1/4-inch, vertical joints must be staggered & remove significant excess from the face of the Thermax_™ Note: With either 3 or 4, a small amount of spray primer may be used in aid in adhesion; maximum 5-inch width.

Use either 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or 16

•   CEI Composites R4000 System using Reynobond_® FR ACM or Alpolic_® FR ACM.

2  – Terracotta cladding – Use any terracotta cladding system in which terracotta is minimum 1-1/4 inch thick. Any standard installation technique can be used.

3  – Metal exterior wall coverings such as steel, aluminum, copper, etc. Any standard installation technique can be used.

4  – Fiber-cement siding – minimum 1/4-inch thick. Any standard installation technique can be used. A maximum 1 1/2-inch air gap allowed behind the fiber-cement siding.

5  – Brick – Standard nominal 4-inch thick, clay brick with brick veneer anchors – standard types – installed maximum 24 inches OC vertically on each stud. Maximum 2-inch air gap between exterior insulation and brick.

6  – Stucco – Minimum 3/4-inch thick, exterior cement plaster and lath. A secondary water-resistive barrier can be installed between the Exterior insulation and the lath. The secondary water-resistive barrier shall not be full-coverage asphalt or butyl-based self-adhered membranes.

7  – Corium_™ Thin brick system.

8  – Minimum 1 1/4-inch thick, Limestone or natural stone veneer or minimum

1 1/4-inch thick cast artificial stone veneer. Any standard installation technique such as ship-lap, etc. can be used.

9 – StoneLite natural stone wall panels by Stone Panels, Inc. 10 – Glen-Gery Thin Tech Elite Series – Masonry veneer

11   – Concrete or precast concrete panels – minimum 1.5-inch thick panel, with a 2-inch maximum air gap between exterior insulation and concrete panel. Any standard installation technique can be used.

12   – Ceramic tile (min. 3/8-inch thick) bonded using noncombustible mortar adhesive to minimum 1/2-inch thick cement board or gypsum sheathing.

13   – Thin brick (min. 3/8-inch thick clay brick) fully adhered with cementitious mortar (standard or polymer modified) to min. 1/2-inch thick cement backer board or gypsum sheathing. A secondary water-resistive barrier can be installed between the board/sheathing and the brick. The secondary water-resistive barrier shall not be full-coverage asphalt or butyl-based self-adhered membranes.

15  – Knight Wall Systems to include:

•  MCM System – Use any Metal Composite Material system that has been successfully tested by the panel manufacturer via the NFPA 285 test method. Any standard installation technique can be used. MCM panel systems such as:

•   CEI Composites R4000 System using Reynobond_® FR ACM or Alpolic_® FR ACM.

•   Terracotta cladding – Use any terracotta cladding system in which terracotta is minimum 1-1/4 inch thick. Any standard installation technique can be used.

•   Metal exterior wall panels or coverings such as steel, aluminum, copper, zinc etc. Any standard installation technique can be used.

•   Brick – Standard nominal 4-inch thick, clay brick with brick veneer anchors

– standard types – installed maximum 24 inches OC vertically on each stud. Maximum 2-inch air gap between exterior insulation and brick.

•  Stucco – Minimum ¾-inch thick, exterior cement plaster and lath attached to minimum ½-inch thick backer board. A secondary water-resistive barrier can be installed between the exterior sheathing and the lath. The secondary water-resistive barrier shall not be full-coverage asphalt or butyl-based self-adhered membranes.

•   Corium_™ Thin brick system.

•  Minimum 1¼-inch thick, Limestone or natural stone veneer or minimum 1¼ inch thick cast artificial stone veneer. Any standard installation technique such as ship-lap, etc. can be used.

•   StoneLite natural stone wall panels by Stone Panels, Inc.

•   Glen-Gery Thin Tech Elite Series – Masonry veneer

•  Concrete or precast concrete panels – Minimum 1.5-inch thick panel, with a 2-inch maximum air gap between exterior insulation and concrete panel. Any standard installation technique can be used.

•   Ceramic tile (min. 3/8-in. thick) bonded using noncombustible

mortar adhesive to minimum ½-in. thick cement board or gypsum sheathing.

•   Thin brick (min. ¾-inch thick clay brick) fully adhered with cementitious mortar (standard or polymer modified) to min. ½-inch thick cement backer board or gypsum sheathing. A secondary water-resistive barrier can be installed between the exterior sheathing and the brick. The secondary water-resistive barrier shall not be full-coverage asphalt or butyl-based self-adhered membranes.

•  Natural stone or artificial stone (min. ¾-inch thick clay brick) fully adhered with cementitious mortar (standard or polymer modified) to min. ½-inch thick cement backer board or gypsum sheathing. A secondary water-resistive barrier can be installed between the exterior/sheathing and the stone. The secondary water-resistive barrier shall not be full-coverage asphalt or butyl-based self-adhered membranes.

16  – NCI Building Group to include:

•   PBR Panel (Exposed fasteners)

•   PBU Panel (Exposed fasteners)

•   AVP Panel (Exposed fasteners)

•  ShadowRib_™ Panels (Exposed fasteners)

•  NuWall_® Panels (Exposed fasteners)

•  MasterLine 16 (Concealed fasteners)

a)  Dow LIQUIDARMOR_™ – CM Flashing and Sealant – max. 60-mil wet thickness, max. 12-inch width.

b) Dow LIQUIDARMOR_™ – LT Flashing and Sealant – max. 35-mil wet thickness, max. 12-inch width.

c)  Limited amounts of acrylic, asphalt or butyl-based flashing tape – max. 12-inch width.

•  WeatherMate_™

•  WeatherMate_™ Plus

•  Tyvek_® CommercialWrap_®

•  DuPont_™ Tyvek_® CommercialWrap_®

•  DuPont_™ Tyvek_® CommercialWrap_® D

•  DuPont_™ Tyvek_® ThermaWrap_™

•  Green Guard Max_™

•  C500

•  Raindrop_® 3D

•  RevealShield_™

•  RevealShield SA_™