Cavitymate™ XPS Insulation is a Styrofoam™ Brand XPS solution that’s conveniently sized to fit between wall ties.
Styrofoam™ Brand Cavitymate™
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.
|Lightweight and durable||
|Thermal Resistance per inch (25 mm) @ 75°F (24°C) mean temp.<sup>1</sup>||C518||ft2•h•°F/Btu. R-value, min.||5|
|Compressive Strength<sup>2</sup>||D1621||psi (kPa), min.||15 (103)|
|Flexural Strength<sup></sup>||C203||psi (kPa), min.||40 (276)|
|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.
|R-Value||Thickness (in.)||Board Size (ft.)||Edge Treatment|
|10||2||1.33 x 8||Butt edge|
|15||3||1.33 x 8||Butt edge|