DuroSpan® GPS R7.5 Insulation Board is a higher R-value product with an R-value of 4.7 per inch manufactured with NEOPOR – a graphite enhanced polystyrene. GPS is a closed cell insulation with a silver-gray colour that meets or exceeds requirements for expanded polystyrene (EPS).

DuroSpan GPS R7.5 is manufactured to meet code requirements, with a thin film laminated to both sides for a more durable, flexible product. This easy to cut and install insulation has Low GWP, maintain a permanent R-value for the life of the product, and is part of an air barrier system. DuroSpan GPS R7.5 demonstrates code compliance for Intertek CCRR-1033.

DuroSpan GPS R7.5 is an excellent choice for insulating applications with low water absorption properties, and a compressive resistance of 10 psi. Markings provided on the printed face of DuroSpan GPS R7.5 insulation assist in cutting to required dimensions and spacing of fasteners into framing.

Available in: 4x8, 4x9 and 4x10 feet sizes, 2 feet high bundles

DuroSpan GPS is manufactured in thicknesses of 1-1/16 – R5, 1-5/8 – R7.5, and 2-1/8 – R10, as well as other R-values available upon request.

Enhanced thermal resistance & permanent R-value
Reduces heat loss
Improved Interior temperatures
Durable product less susceptible to handling damage
Easy to cut and install
Intertek CCRR-1033

Material Properties of DuroSpan^® GPS R7.5 Insulation

Material Property	Test Method	Units	Property Values
Thermal Resistance Minimum RSI per 25mm (R per inch)	ASTM C518	m² • ⁰C/W (ft²•h•⁰F/BTU)	0.82 (4.7)
Compressive Resistance Minimum @ 10% Deformation	ASTM D1621	kPa (psi)	70 (10)
Flexural Strength Minimum	ASTM C203	kPa (psi)	170 (25)
Water Vapour Permeance Maximum	ASTM E96	ng/(Pa.s.m²) (Perms)	30 (0.5)
Water Absorption Maximum	ASTM D2842	% By Volume	6.0
Dimensional Stability Minimum	ASTM D2126	% Linear Change	1.5
Limiting Oxygen Index Minimum	ASTM D2863	%	24
Surface Burning Characteristics Classification or Rating	CAN/ULC S102.2	Flame Spread Smoke Developed	220 Over 500