Styrofoam™ Brand Tongue and Groove
Locking design means more coverage per board
Designed with grooves to lock into the next sheet, Styrofoam™ Brand Tongue and Groove Foam Insulation is easy to install and lightweight while providing moisture resistance and thermal efficiency.
Styrofoam™ Brand Tongue and Groove
Styrofoam™ Brand Tongue and Groove Extruded Polystyrene Foam Insulation (XPS)* 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.
Features & benefits
| Lockable edges speed installation |
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| Moisture Resistant |
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Physical Properties
| Method | Unit | Value | |
|---|---|---|---|
| Compressive Strength<sup>2</sup> | ASTM D1621 | psi, min. | 25 |
| Water Absorption<sup></sup> | ASTM C272 | % by volume, max. | 0.3 |
| Water Vapor Permeance<sup>3</sup> | ASTM E96 | perm, max | 1.5 |
| Maximum Use Temperature<sup></sup> | - | °F | 165 |
| Coefficient of Linear Thermal Expansion<sup></sup> | ASTM D696 | in/in•°F | 3.5 x 10-5 |
| Flexural Strength<sup></sup> | ASTM C203 | psi, min. | 50 |
2Vertical compressive strength is measured at 10 percent deformation or at yield, whichever occurs first. Since Styrofoam™ Brand Extruded Polystyrene Foam Insulations are visco-elastic materials, adequate design safety factors should be used to prevent long-term creep and fatigue deformation. For static loads, 3:1 is suggested. For dynamic loads, 10:1 is suggested.
3Based on 1” (25 mm) thickness.
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