EnerSpan is a moulded graphite polystyrene (GPS) rigid foam insulation that gives maximum efficiency, cost-effectiveness and sustainability to your insulation projects. EnerSpan is manufactured using Neopor® provided by BASF, a graphite-enhanced raw material that reduces radiation heat transfer resulting in higher thermal resistance (R-value) compared to standard CAN ULC S701.1, Type 1 EPS insulation.

With an R-value of 4.7 per inch, EnerSpan helps you achieve your desired R-value with a thinner board. EnerSpan insulation is easy to work with and install, and consistently delivers the highest true R-value performance over time. This high-performing insulation is breathable, while the closed-cell structure does not support the growth of mold, while adapting to all climate zones.

Available in 2x8 ft. and 4x8 ft., 2 ft. high bundles

Thicknesses of ¾, 1, 1 ½, 2, 2 ½ , 3, 3 ½ , 4 inches, Plus special order sizes and thickness to meet job

  • Easy to cut and install
  • Meets all building code requirements
  • Closed cell insulation
  • No Thermal Drift
  • Compressive Resistance of 10 psi
  • A True R-value of 4.7 per inch
  • Resistant to moisture
  • Uses up to 30% less material than other rigid foam insulation to achieve the same R-value, saving on building materials and installation labor
  • Thinner boards are needed to reach the desired R-value than others so the same effect is achieved with less material

Material Properties of EnerSpan® Insulation

Material Property Units CAN/ULC-S701 Type
1 2 3
Thermal Resistance
Minimum RSI per 25mm (inch)
ASTM C518
m20C/W
(ft2•h•0F/BTU)
0.82
(4.7)
0.82
(4.7)
0.82
(4.7)
Compressive Resistance
Minimum @ 10% Deformation
ASTM D1621
kPa
(psi)
70
(10)
110
(16)
170
(25)
Flexural Strength
Minimum
ASTM C203
kPa
(psi)
170
(25)
240
(35)
300
(44)
Water Vapour Permeance
Maximum
ASTM E96
ng/(Pa.s.m2)
(Perms)
300
(5.2)
200
(3.5)
130
(2.25)
Water Absorption
Maximum
ASTM D2842
% By Volume 6.0 4.0 2.0
Dimensional Stability
Maximum, 7 Days @ 70± 2℃ (158±40F)
ASTM D2126
% Linear Change 1.5 1.5 1.5
Limiting Oxygen Index
Minimum
ASTM D2863
% 24 24 24
Surface Burning Characteristics
Classification or Rating
CAN/ULC S102.2
Flame Spread
Smoke Developed
220
over 500
Blogs Featuring EnerSpan® Insulation

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