STYROFOAM™ Brand SM Insulation (Canada Only)

A multi-purpose Type IV extruded polystyrene foam insulation.

Used In

  • For residential and commercial applications
  • Ideal for foundations, slabs, crawl spaces, interior basements, geotechnical and other in-ground insulation applications
  • Also used in many other types of applications, including attics and ceilings

Product Advantages

  • Contains an average of 20% pre-consumer recycled content certified by UL Environment Inc.
  • Helps protect foundation damp-proofing and waterproofing, especially during backfilling
  • Provides a secondary barrier against groundwater leakage
  • Freeze-thaw cycling of the foundation wall is minimized, reducing the potential for cracking
  • Helps reduce the potential for condensation
  • Minimum compressive strength of 30 psi (210 kPa)

Typical Physical Properties

These properties are typical but do not constitute specifications.

STYROFOAM™ SM Insulation

Board Thickness(1), in (mm) R-Value(2) (RSI) Board Size, ft (mm) Edge Treatment Min Compressive Strength(3), psi (kPa)
1.0 (25) 5.0 (0.88) 2 x 8 (600 x 2400) Butt Edge/Shiplap 30 (210)
1.5 (38) 7.5 (1.32) 2 x 8 (600 x 2400) Butt Edge/Shiplap 30 (210)
2.0 (50) 10.0 (1.76) 2 x 8 (600 x 2400) Butt Edge/Shiplap 30 (210)
2.4 (61) 12.0 (2.11) 2 x 8 (600 x 2400) Shiplap 30 (210)
2.5 (64) 12.5 (2.2) 2 x 8 (600 x 2400) Shiplap 30 (210)
3.0 (75) 15 (2.64) 2 x 8 (600 x 2400) Butt Edge/Shiplap 30 (210)
4.0 (102) 20 (3.52) 2 x 8 (600 x 2400) Butt Edge/Shiplap 30 (210)

(1) Not all product sizes are available in all regions.

(2) R means resistance to heat flow. The higher the R-value or RSI (R-Value Système Internationale), the greater the insulating power. R-values are expressed in ft2• h•°F/Btu. RSI values are expressed in m2 °C/W. R-value determined by ASTM C518.

(3) Vertical compressive strength is measured at 10% deformation or at yield, whichever occurs first.

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