Dow Chemicals

Dow STYROFOAM* SM extruded polystyrene insulation, with its high compressive strength and moisture resistance, is recommended for use in below-grade applications, such as foundation or slab insulation, and ceiling applications. CAN/ULC S701 Type 4.

A premium insulation for those who demand the best from their building materials.
STYROFOAM SM Insulation is an extruded polystyrene foam which has an insulation value of R-5 per inch. Its high compressive strength makes it suitable for many applications and, in particular, exterior below-grade use. Tough and moisture-resistant, STYROFOAM SM insulation has become synonymous with quality, comfort, energy savings and peace of mind. Professionals choose STYROFOAM SM insulation for its ease of installation and long-lasting value.

Performance. Installation. Durability. Dow Building Materials is a leader in extruded polystyrene insulation. In fact, Dow Building & Construction invented STYROFOAM extruded polystyrene insulation. Today, we have a science-based insulating solution for your commercial application. Whether it's the foam's closed cell structure, unique slots and grooves that ease installation, or specialized facings for extra durability, added R-value, and moisture resistance, you'll appreciate the superior performance of STYROFOAM insulation products:

Closed Cell Foam Structure – Foam with no holes or voids that water can penetrate. It resists moisture and will maintain its R-value over time. The result, high compressive strength and unparalleled resistance to water penetration. This is the only kind of foam that carries the STYROFOAM brand name.

R-Value – A measurement of resistance to heat flow. The greater the R-value, the greater the thermal efficiency—and a small increase makes a big difference. Cavity insulation only insulates between the studs, leaving those studs un-insulated. Rigid insulation covers the entire wall, providing a continuous layer of thermal protection and increasing the overall R-value and energy efficiency.

Moisture Resistance – Some insulation products absorb and hold water which reduces insulation performance and can lead to mold growth. STYROFOAM extruded polystyrene insulation resists water absorption and does not provide a nutrient source for molds. So, STYROFOAM insulation provides long-term insulating performance while reducing the potential for mold growth within the insulation.

Strength and Durability – Styrofoam insulation is rigid, so it's durable and maintains its integrity during installation and for years after. Yet, it's easy to cut and work with.

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