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PlastiSpan® 40 Insulation
High compressive resistance for geotechnical applications

PlastiSpan® 40 Insulation is used in Roadways, Sidewalks and Utilities.

PlastiSpan® 40 insulation is a moulded expanded polystyrene (EPS)

• Meets all building code requirements
• Meets ASTM C578, Type XIV
• Thermal resistance - R-value 4.4 per inch
• Closed cell insulation resists moisture

EPS is a closed call, rigid foam plastic insulation that does not contain a
blowing agent that provides a temporary increase in thermal resistance.

PlastiSpan insulation applied a 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 Polystyne 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).

The table below provides material properties for PlastiSpan 40 insulation meeting ASTM C578, Type XIV as noted.

Insulation Properties Units ASTM Test Type IX
Nominal Density
pcf C303
Compressive Resistance
Minimum @ 10% deformation
psi D1621 40.0
per inch thickness at
mean temperature
40 0F (ft2•hr•0F/Btu) C518 4.8
75 0F 4.4
Water Vapor Permeance
Perm E96 2.5
Flexural Strength
psi C203 60
Dimensional Stability
% linear change D2126 2.0
Water Absorption
% by volume C272 2.0
Oxygen Index
volume % D2863 24
pcf C303 2.40
Flame Spread Index
E84 <25
Smoke-Developed Index


As part of its commitment to quality and ongoing sustainability initiatives, Plasti-Fab maintains GREENGUARD Gold
for PlastiSpan 40 insulation with UL Environment, an independent global safety science organization.
The GREENGUARD Gold Certification mark on PlastiSpan 40 insulation gives assurance that insulation designed for
use in indoor spaces meets strict chemical emissions limits, which contribute to the creation of healthier interiors.