Technical Bulletin: Styrofoam XPS/Thermax

2  – Concrete Masonry wall

3  – 1 layer – ⅝-inch thick, Type X, Gypsum wallboard on interior, installed over steel studs: minimum 3⅝-inch depth, minimum 20-gauge at a maximum of 16-inch OC with lateral bracing every 4 ft. vertically

2  – Fiberglass batt insulation (faced or unfaced)

3  – Any noncombustible insulation (faced or unfaced)

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

3  – 5/8-inch thick, Type X, exterior type gypsum sheathing

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

W. R. MEADOWS AIR-SHIELD TMP

W. R. MEADOWS AIR-SHIELD LSR

with either:

a) Dow LIQUIDARMOR_™ – CM Flashing and sealant – max. 60-mil wet thickness, max. 5-inch width

b) Acrylic, asphalt or butyl-based sealing tape – max. 4-inch width

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

2  – Concrete – 2 inches thick or greater. Maximum 2-inch air gap between exterior insulation and concrete. Any standard non-open-joint installation technique can be used.

3  – Concrete masonry units – 4 inches thick or greater. Maximum 2-inch air gap between exterior insulation and CMU.

4  – Stone Veneer – 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.

5  – 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.

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

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

2  – Concrete Masonry wall

3 – Standard clay brick wall

4 – Adobe block wall

5 – Steel studs: minimum 3⅝-inch depth, minimum 20-gauge at a maximum of 24-inch OC with lateral bracing every 4 ft. vertically with:

a)  One layer – ⅝-inch thick Type X or ½-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  – ½-inch thick, exterior type gypsum sheathing

3 – ⅝-inch thick, exterior type gypsum sheathing

AIR-SHIELD LSR

2  – Dow Thermax_™ Brand Rigid Insulation – Total thickness to be a minimum of ⅝ 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  – WeatherMate_™ or WeatherMate_™Plus – Dow Chemical

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

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

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

Note: With either 2 or 3, a small amount of spray primer may be used to aid in adhesion; maximum 5-inch width

2  – Stucco – Minimum ¾-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)  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

⅝ inch to maximum of 3 inches.

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

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

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

Note: With either 2 or 3, a small amount of spray primer may be used to aid in adhesion; maximum 5-inch width

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  – Cement board siding – Any standard installation technique can be used.

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 ¾-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 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.

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-in. thick) bonded using noncombustible mortar adhesive to minimum ½-in. thick cement board or gypsum sheathing.

13   – Knight Wall Systems to include:

•  Metal Panel (Aluminum or steel)

•  Thin Brick Panels

•  NuTech AFC Stucco applied to Permabase cement board

•  Terracotta – Single skin or double skin – 15 mm or thicker

•  Concrete panels

•  Corium_™ Thin Brick system

•  Thin brick (min. ¾-inch thick clay brick) fully adhered with cementitious mortar (standard or pllymer modified) to min. ½-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.

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

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

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