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EIFS (Exterior Insulation Finish Systems)

Commercial Solutions - EIFS

Overview Header

PlastiSpan EFS is a specifically manufactured expanded polystyrene
insulation board to meet the requirements of various types of exterior
protective coatings as classified by the Exterior Insulation Manufactures

The EPS insulation boards manufactured by Plasti-Fab Ltd. are quality
controlled by a third party Quality Assurance Program monitored/certified
by Intertek (ITS) to meet the CAN/ULC-S701 standard.

EIFS are non-load bearing exterior wall cladding systems typically
consisting of PlastiSpan EFS insulation attached to a substrate, an integrally
reinforced base coat applied to the face of the PlastiSpan EFS insulation
and a protective finish applied to the surface of the base coat. The
PlastiSpan EFS insulation is attached to the substrate using specially
formulated adhesives and/or mechanical attachment.

PlastiSpan EFS insulation used in EIFS applications covers the outside of
the building so that the structure is isolated from the wide temperature
fluctuations of the climate. This reduces expansion and contraction of the
structure and stabilizes interior temperatures.

Specification Header

Material Properties Test Method Metric (SI) Units CAN/ULC-S701 Imperial Units CAN/ULC-S701
Thermal Resistance 3 Min. @ mean temp. 24 °C (75° F) ASTM C 518 m2 • °C
W • 25 mm
0.65 ft2 • hr • °F
BTU • in
Compressive Resistance
Minimum @ 10% Deformation
0.65 kPa 70 psi 10
Flexural Strength Minimum 0.98 kPa 170 psi 25
Water Vapour Permanence 4 Maximum 1.30 ng
Pa • s • m2
300 perms 5.2
Dimensional Stability Maximum 1.95 % linear change 1.5 % linear change 1.5
Water Absorption Maximum 1.95 % by volume 6.0 % by volume 6.0
Limiting Oxygen Index
1.95 % 24 % 24

Additional Material Properties Not Specified in CAN/ULC-S701
Coefficient of
Thermal Expansion
E 96
m / m / °C 6.3 x 10-5 in / in / °F 3.5 x 10-5
Shear Modulus
ASTM D 2126
7 days @ 70 ± 2° C
kPa 400 psi 58
Tensile Strength
ASTM D 2842 kPa 103 psi 16