Commercial | Residential | Multifamily | Wall
Insulation made to keep moisture out
Cavitymate™ XPS Insulation is a Styrofoam™ Brand XPS solution that’s conveniently sized to fit between wall ties.
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Styrofoam™ Brand Cavitymate™ Ultra
An extruded polystyrene foam insulation board with square edges on all four sides. Special 16” width makes it easy to fit between brick ties in cavity wall applications.
Features & benefits
| Lightweight and durable |
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| Closed-cell structure |
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| Convenient size |
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Physical Properties
| Method | Unit | Value | |
|---|---|---|---|
| Thermal Resistance per inch (25 mm) @ 75°F (24°C) mean temp.<sup>1</sup> | C518 | ft2•h•°F/Btu. R-value, min. | 5.6 |
| Compressive Strength<sup>2</sup> | D1621 | psi (kPa), min. | 25 (172) |
| Flexural Strength<sup></sup> | C203 | psi (kPa), min. | 50 (345) |
| Water Absorption<sup></sup> | C272, D2842 | % by volume, max. | 0.3 |
| Water Vapor Permeance<sup>3</sup> | E96 | perm (ng/Pa•s•m2 ), max. | 1.5 (90) |
| Coefficient of Linear Thermal Expansion<sup></sup> | D696 | in/in•°F (mm/m•°C) | 3.5 x 10-5 (6.3 x 10-2) |
| Maximum Use Temperature<sup></sup> | - | °F (°C) | 165 (73.8) |
1Values are consistent with the criteria of ASTM C578 and the requirements of the FTC R-value rule (16 CFR Part 460). R means resistance to heat flow. The higher the R-value, the greater the insulating power. Ask your seller for the fact sheet on R-value.
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.
Available Sizes
| RSI | Thickness (mm) | Board Size (metre) | Edge Treatment |
|---|---|---|---|
| 3 | 75 | .6 x 2.4 | Butt edge |
| 3.52 | 91 | .4 x 2.4 | Butt edge |
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