EnerSpan M-24 insulation is a moulded graphite polystyrene board that is ship-lapped on all 4 edges, 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, Type 2 EPS insulation.

With an R-value of 4.7 per inch, EnerSpan M-24 helps you achieve your desired R-value with a thinner board. EnerSpanM-24 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. With the higher compressive strength of 24 psi, EnerSpan M-24 is a versatile insulation product that can be used in a wide range of applications, but it ideal when higher compressive resistance is required.

The ship-lap edges of the insulation ensure complete, continuous insulation in your application.

2x8 ft., 24” bundles
1 ½, 2, and 3 inch thicknesses available

Closed-cell structure is moisture resistant to provide long-term durability
Compressive Resistance of 24 psi
Thermal resistance of True R-value of 4.7 per inch
Closed cell insulation resists moisture
Easy to cut and install
Permanent R-value
Increases energy efficiency for reduced heating and cooling costs
Can be used for retrofit or new construction
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
Adaptable and versatile
Cost-effective
Shiplap provided on all four edges of board

Material Properties of EnerSpan^® M24 Insulation

Material Property	Test Method	Units	Property Values
Compressive Resistance Minimum @ 10% Deformation ASTM D1621	ASTM D1621	kPa (psi)	110 (16)
Compressive Modulus Minimum	ASTM D1621	kPa (psi)	4000 (580)
Thermal Resistance Minimum RSI per 25mm (1 inch) ASTM C518	ASTM C518	m² • ⁰C/W (ft²•h•⁰F/BTU)	0.78 (4.7)
Flexural Strength Minimum	ASTM C203	kPa (psi)	240 (35)
Water Vapour Permeance Maximum	ASTM E96	ng/(Pa.s.m²) (Perms)	200 (3.5)
Dimensional Stability Maximum, 7 Days @ 70± 2℃ (158±40F)	ASTM D2126	% Linear Change	1.5
Water Absorption Maximum	ASTM D2842	% By Volume	4.0
Limiting Oxygen Index Minimum	ASTM D2863	%	24

EnerSpan M-24 Insulation Product Line
Thicknesses	R-value	RSI	Width/Length	Pcs/Bag	Product Number
1.5" (38mm)	6.8	1.20	24" x 96"	16	1306200
2" (51mm)	9.1	1.59	24" x 96"	12	1306201
3" (38mm)	13.6	2.39	24" x 96"	8	1306202