STYROFOAM™ Brand Tongue and Groove Insulation features tongue and groove edges on all four sides of 2' x 8' boards 1" thick or less and on the long edges of all other boards. The lightweight, moisture-resistant and thermally efficient Type IV extruded polystyrene foam insulation is suited for a wide range of residential and commercial construction applications.
Building Code Compliance
Complies with ASTM C578 Type IV. 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.
STYROFOAMâ„¢ Brand Tongue and Groove Insulation CAD DetailsU.S. Residential
Lightweight, moisture-resistant and thermally efficient, STYROFOAM™ Brand Tongue and Groove Insulation features a tongue and groove edge treatment that helps boards fit snugly against one another.
Related Information
Cathedral/Vaulted Ceilings – Installing STYROFOAM Square Edge, RS, Tongue & Groove, DURAMATE™ Plus, TUFF-R™, Super TUFF-R, or THERMAX
Installation Procedures for THERMAX™ or STYROFOAM™ Brand Rigid Insulation – Closed Crawl Space (414KB PDF)
Installing SM/CLADMATE/WALLMATE in Cathedral/Vaulted Ceiling (Exposed Beams Inside Ceiling w/STYROFOAM on top of Exposed Tongue & Groove Decking)
Crawlspaces – Installing STYROFOAM Square Edge, STYROFOAM SCOREBOARD™ or STYROFOAM Tongue & Groove Insulation
Exterior Basement Wall – Installing STYROFOAM™ PERIMATE™, Square Edge, SCOREBOARD™, Tongue & Groove or BLUECOR
Interior Basement Wall (Even Wall w/Drywall Finish) – Installing STYROFOAM™ Tongue & Groove, SCOREBOARD™ or Square Edge
Existing Walls – Installing STYROFOAM™ Residing Board, STYROFOAM Residential Sheathing, STYROFOAM Tongue & Groove, DURAMATE™ Plus, TUFF-R™ or Super TUFF-R™ for use as a weather-resistive barrier
Foam Over OSB – Installing STYROFOAM™ Residential Sheathing, Tongue & Groove, Square Edge, DURAMATE™ Plus, TUFF-R™, Super TUFF-R™ or THERMAX™ for use as a weather-resistive barrier
Foam Over Studs – Installing STYROFOAM™ Residential Sheathing, Tongue & Groove, Square Edge, DURAMATE™ Plus, TUFF-R™, Super TUFF-R™ or THERMAX™ for use as a Water-Resistive Barrier
Foam Over Studs – Installing STYROFOAM™ Residential Sheating, STYROFOAM Tongue & Groove, STYROFOAM DURAMATE™ Plus, STYROFOAM Square Edge, TUFF-R™, Super TUFF-R™, or THERMAX™ – Installation of Foam Sheathing as a Weather-Resistive barrier
| Nominal Board Thickness(1), in | R-Value(2) | Board Size, ft | Edge Treatment | Min Compressive Strength(3), psi |
| .75 | 3.8 | 2Â x 8 / 4 x 8 / 4 x 9 | Tongue and Groove | 25 |
| 1.0 | 5.0 | 2Â x 8 / 4 x 8 / 4 x 9 | Tongue and Groove | 25 |
| 1.5 | 7.5 | 2Â x 8 / 4 x 8 / 4 x 9 | Tongue and Groove | 25 |
| 2.0 | 10.0 | 2Â x 8 / 4 x 8 / 4 x 9 | Tongue and Groove | 25 |
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(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. |
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07 20 00 Board Insulation
06 16 13 Insulating Sheathing
U.S. Commercial
Lightweight, moisture-resistant and thermally efficient, STYROFOAM™ Brand Tongue and Groove Insulation features a tongue and groove edge treatment that helps boards fit snugly against one another.
| Nominal Board Thickness(1), in | R-Value(2) | Board Size, ft | Edge Treatment | Min Compressive Strength(3), psi |
| .75 | 3.8 | 2Â x 8 / 4 x 8 | Tongue and Groove | 25 |
| 1.0 | 5.0 | 2Â x 8 / 4 x 8 | Tongue and Groove | 25 |
| 1.5 | 7.5 | 2Â x 8 / 4 x 8 | Tongue and Groove | 25 |
| 2.0 | 10.0 | 2Â x 8 / 4 x 8 | Tongue and Groove | 25 |
|
(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 (5% for STYROFOAM™ Brand HIGHLOAD 40, 60 and 100 Insulation products) or at yield, whichever occurs first. Since STYROFOAM™ Brand Extruded Polystyrene products are visco-elastic materials, adequate design safety factors should be used to prevent long-term creep. For static loads, 3:1 is suggested. For dynamic loads, 5:1 is suggested. |
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07 20 00 Board Insulation
06 16 13 Insulating Sheathing
