With more than 70 years of proven performance in wet environments, DuPont™ Styrofoam™ Brand SM30 Extruded Polystyrene Foam Insulation is ideal for use in foundations, floor slabs, attics and crawlspaces, where it resists water pickup – a characteristic that allows it to maintain its high R-value.
Styrofoam™ Brand SM30
Styrofoam™ Brand SM30 XPS Extruded Polystyrene Insulation is a foam insulation board that meets the needs of the commercial foundation and building floor slab market. It also can be used for attics, foundations/slabs and crawlspaces in residential applications. The product’s closed-cell structure resists water pickup, enabling it to retain a high R-value over time – a necessary property in wet, below-grade commercial foundation applications. The Styrofoam™ Brand XPS product line gives you the proven thermal and moisture performance to design and build energy-efficient, resilient structures for all six sides of your commercial building. It’s lightweight and easy to install, which makes the work go faster, and it’s readily available through our wide distributor network. When and where you need it, Styrofoam™ Brand is there.
|Bonds dry, treated, damp and frozen surfaces||
|Thermal Resistance per inch @ 75°F mean temp. @ 40°F mean temp. @ 25°F mean temp.<sup>1</sup>||-||-||5.6|
|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|