Intertek Directory of Building Products

EnerSpan®, DuroSpan® GPS, and EnerGreen® Enhanced Insulation products are moulded expanded polystyrene (EPS) insulation products, intended for use as non-structural thermal insulation in wall, ceiling, or floor assembly, and door cavities.

RATINGS

Physical Properties - CAN/ULC-S701

Material Property	Units	Type 1	Type 2	Type 2+	Type 3
Water Vapour Permeance Maximum	ng /Pa•s•m²	300	200	200	130
Dimensional Stability Maximum	% Linear Change	1.5	1.5	1.5	1.5
Flexural Strength Minimum	kPa	170	240	240	300
Water Absorption Maximum	% by volume	6.0	4.0	4.0	2.0
Compressive Resistance Minimum	kPa	70	110	110	140
Limiting Oxygen Index Minimum	%	24	24	24	24

 
Physical Properties - ASTM C578

Material Property	Units	Type I	Type II	Type II+	Type VIII	Type IX
Product Density Minimum	pcf	0.90	1.35	1.45	1.15	1.80
Water Vapour  Permeance Maximum	Perm	5.0	3.5	3.5	3.5	2.5
Compressive Stress Minimum	psi (kPa)	10	15	15	13	25
Flexural Strength Minimum	psi	25	35	35	30	50
Dimensional Stability Maximum	% Linear Change	2.0	2.0	2.0	2.0	2.0
Water Absorption Maximum	% By volume	4.0	3.0	3.0	3.0	2.0
Limiting Oxygen Index Minimum	%	24	24	24	24	24

 
Thermal Resistance

EPS TYPE	MIMIMUM DENSITY	R-VALUE
ASTM C578 TYPE I II II+ VIII IX	0.90 pcf 1.35 pcf 1.45 pcf 1.15 pcf 1.80 pcf	At 75°F MEAN TEMP 4.7 ft²·h·F/BTU per inch (0.82 m²·C/W per 25 mm)
CAN/ULC-S701 TYPE 1 2 2+ 3	15 kg/m³ 22 kg/m³ 23.23 kg/m³ 29 kg/m³	At 24°C MEAN TEMP 0.82 m²-C°/W per 25 mm (4.7 ft²·h·F/BTU per inch)

Surface Burning Characteristics

STANDARD	EPS TYPE/DENSITY	THICKNESS	FLAME SPREAD INDEX	SMOKE DEVELOPED INDEX
CAN/ULC-S102.2	CAN/ULC-S701 32 kg/m³ max.	102 mm max.	230 or less	over 500
ASTM E84	ASTM C578 2.00 pcf max.	6 inches max.	25 or less	450 or less

CODE COMPLIANCE RESEARCH REPORT

Evaluation Method	Building Code	CCRR Number
ICC-ES AC12	2021, 2018, 2015, 2012, and 2009 IBC 2021, 2018, 2015, 2012, and 2009 IRC 2015 and 2010 NBC 2012 IgCC	CCRR-1033