PlastiSpan Insulation is a moulded expanded polystyrene (EPS) insulation.EPS is a closed cell, rigid foam plastic insulation.

PlastiSpan insulation applied as continuous insulation over foundations, walls and roofs eliminates thermal bridging, increasing your total effective R-value. This reduces energy costs and increases your energy savings.

PlastiSpan® expanded polystyrene (EPS) insulation conforms to ASTM C578, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation, as detailed below.

PlastiSpan insulation has also been evaluated for conformance with the requirements of ICC-ES AC12, Acceptance Criteria for Foam Plastic Insulation per ICC-ES Evaluation Report ESR-1587 and Intertek Code Compliance Research Report CCRR-1072 (see Code Support section in Technical Library for additional information).

  • Available in 2x8 ft, 4x8 ft; 2 ft high bundles
  • 1, 1 ½, 2, 2 ½, 3 in. Thicknesses with Special order sizes available upon request
  • Meets all building codes for above & below grade
  • Most cost-effective insulation per R-value
  • Meets ASTM C578, Type I
  • Thermal resistance - R-value 3.9/inch @ 75 F, 4.2/inch @ 40 F
  • Closed cell insulation resists moisture
  • Compressive Resistance: 10 psi
  • Easy to cut and install
  • Maintains R-value
  • Increases energy efficiency for reduced heating and cooling costs
  • Can be used in Retrofit & new construction

Material Properties of PlastiSpan® Insulation

Material Property Units Test Method Property Values
Nominal Density pcf ASTM C303 1.00
Compressive Resistance
Minimum @ 10% Deformation
psi ASTM D1621 10
R-value
per inch thickness at mean temperature
40°F (ft2•hr•0F/Btu) ASTM C518 4.2
75°F 3.9
Water Vapour Permanence
Maximum
Perm ASTM E96 5.0
Flexural Strength
Minimum
psi ASTM C203 25
Dimensional Stability
Maximum
% linear change ASTM D2126 2.0
Water Absorption
Maximum
% by volume ASTM C272 4.0
Oxygen Index
Minimum
volume % ASTM D2863 24
Density
Minimum
pcf ASTM C303 0.90
Flame Spread Index
Maximum
ASTM E84 <25
Smoke-Developed Index
Maximum
<450
Thermal Resistance for Some Common Thicknesses
Millimeters RSI Inches R-Value
19 0.49 3/4" 2.81
25 0.65 1" 3.75
38 0.98 1 1/2" 5.63
50 1.30 2" 7.50
75 1.95 3" 11.25
Other Standard & Custom thicknesses available upon request.
Standard sizes range from; 2x4,2x8,4x4,4x8.

Blogs Featuring PlastiSpan® Insulation

Next Steps


Talk to a Rep

Talk to an EPS Product Specialist in your area who will help you with products and pricing.


Connect with Us

Send us your questions and one of our EPS experts will get back with you.