PlastiSpan® 25 insulation is a Type IX, closed cell expanded polystyrene (EPS) insulation. With an R-value of 4.4 @75 F and 4.8 @40 F per inch PlastiSpan 25 has a compressive resistance of 25 psi. The closed cell structure of PlastiSpan 25 insulation resists water absorption so it will retain its R-value even in applications where severe temperature differentials occur.

PlastiSpan 25 insulation’s minimum compressive resistance of 25 psi makes it ideal to insulate low temperature freezer floors or for use in other applications where moderate loads are expected. By incorporating PlastiSpan 25 insulation into your project as a continuous insulation solution, you are able to eliminate thermal bridging; increasing your total effective RSI/R-value, effectively reducing energy costs and increasing your energy savings.

  • Available in 2x8 ft, 4x8 ft; 2 ft high bundles
  • 1, 1 ½, 2, 2 ½, 3 in. plus special order sizes and thicknesses to meet job sizes
  • Meets all building code requirements
  • Thermal resistance - 4.4/inch @75 F, and 4.8/inch @ 40 F
  • Closed cell insulation resists moisture
  • Easy to cut and install
  • Maintains R-value
  • 25 psi compressive resistance
  • No thermal drift
  • Does not support growth of mould
  • Lightweight, easy to install

Material Properties of PlastiSpan® 25 Insulation

Insulation Properties Units ASTM Test Type IX
Nominal Density pcf C303 2.00
Compressive Resistance
Minimum @ 10% deformation
psi D1621 25.0
per inch thickness at mean temperature
40 °F (ft2•hr•°F/Btu) C518 4.8
75 °F 4.4
Water Vapour Permeance
Perm E96 2.5
Flexural Strength
psi C203 50
Dimensional Stability
% linear change D2126 2.0
Water Absorption
% by volume C272 2.0
Oxygen Index
volume % D2863 24
pcf C303 1.80
Flame Spread Index
E84 <25
Smoke-Developed Index

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