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STYROFOAM™ Brand WALLMATE™ Insulation is designed as a quick, easy-to-install and durable option for insulating interior basement walls and other areas of the home. When butted together, slotted "rabbet" edges on long edges form a slot between the extruded polystyrene foam boards to accommodate a wood nailing strip, which is used for attaching the boards to the basement wall or ceiling rafters. It also provides a nail base for drywall.

Building Code Compliance

Complies with ASTM C578 Type X. Meets CAN/ULC S-701 Type 2 and CCMC 12083-L. Meets IBC/IRC requirements for foam plastic insulation. See ESR-2142, BOCA-ES RR 21-02, ICBO-ES ER 2257. UL Classified, see Classification Certificate D369. Calif. Std. Reg. # CA T064. Florida Building Code FL 3835.

Related Information

Installation Recommendations for STYROFOAM™ WALLMATE™ Slotted Edge Insulation (312KB PDF)
Installation Instructions for STYROFOAM CLADMATE/CLADMATE XL, STYROFOAM WALLMATE and STYROFOAM SM – Finished and Unfinished Attics
Installing SM/CLADMATE/WALLMATE in Cathedral/Vaulted Ceiling (Gypsum Board Exposed Inside Ceiling w/STYROFOAM Between Gypsum and Wood Framing)
Installing SM/CLADMATE/WALLMATE in Cathedral/Vaulted Ceiling (Exposed Beams Inside Ceiling w/STYROFOAM on top of Exposed Tongue & Groove Decking)
Interior Basement Wall – Installing STYROFOAM WALLMATE Insulation
STYROFOAM™ Extruded Polystyrene Foam Insulation – 30 Year Thermal Limited Warranty (202KB PDF)

U.S.

STYROFOAM™ Brand WALLMATE™ Insulation is designed as a quick, easy-to-install and durable option for insulating interior basement walls and other areas of the home.

Nominal Board Thickness(1), in R-Value(2) Board Size, ft Edge Treatment Min Compressive Strength(3), psi
1.5 7.5 2 x 8 Slotted 15
2.0 10.0 2 x 8 Slotted 15

(1) Not all product sizes are available in all regions.

(2) R means resistance to heat flow. The higher the R-value, the greater the insulating power. R-values are expressed in ft2• h•°F/Btu. R-value determined by ASTM C518.

(3) Vertical compressive strength is measured at 10% deformation or at yield, whichever occurs first.

07 20 00 – Board Insulation

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Canada

STYROFOAM™ Brand WALLMATE™ Insulation is designed as a quick, easy-to-install and durable option for insulating interior basement walls and other areas of the home.

Board Thickness(1), in (mm) R-Value(2) (RSI) Board Size, ft (mm) Edge Treatment Min Compressive Strength(3), psi (kPa)
1.5 (38) 7.5 (1.32) 2 x 8 (600 x 2400) Slotted 16 (110)
2.0 (50) 10.0 (1.76) 2 x 8 (600 x 2400) Slotted 16 (110)
2.4 (60) 12 (2.11) 2 x 8 (600 x 2400) Butt Edge 16 (110)

(1) Not all product sizes are available in all regions.

(2) R means resistance to heat flow. The higher the R-value or RSI (R-Value Système Internationale), the greater the insulating power. R-values are expressed in ft2• h•°F/Btu. RSI values are expressed in m2°C/W. R-value determined by ASTM C518.

(3) Vertical compressive strength is measured at 10% deformation or at yield, whichever occurs first.

07 20 00 – Board Insulation

We're here to help. If you're not finding the information you need, please let us know.