Low-GWP Styrofoam Brand XPS Insulation is now grey and offers a 94% reduction in embodied carbon.

DuPont Styrofoam Brand Roofmate Insulation is an extruded polystyrene (XPS) insulation engineered for use on heavyweight decks (e.g., reinforced concrete) with a ballast layer of gravel or concrete slabs. Because it helps the roof membrane maintain a steady temperature, DuPont Styrofoam Brand Roofmate minimizes the harmful effects of freeze-thaw cycles, weathering and physical damage. It’s lightweight and easy to install, which makes the work go faster, and it’s readily available through our wide distributor network. When and where you need it, Styrofoam Brand is there. DuPont Styrofoam Brand Roofmate Insulation is an extruded polystyrene (XPS) insulation engineered for use on heavyweight decks (e.g., reinforced concrete) with a ballast layer of gravel or concrete slabs. Because it helps the roof membrane maintain a steady temperature, DuPont Styrofoam Brand Roofmate minimizes the harmful effects of freeze-thaw cycles, weathering and physical damage. It’s lightweight and easy to install, which makes the work go faster, and it’s readily available through our wide distributor network. When and where you need it, Styrofoam Brand is there. DuPont Styrofoam Brand Roofmate Insulation is an extruded polystyrene (XPS) insulation engineered for use on heavyweight decks (e.g., reinforced concrete) with a ballast layer of gravel or concrete slabs. Because it helps the roof membrane maintain a steady temperature, DuPont Styrofoam Brand Roofmate minimizes the harmful effects of freeze-thaw cycles, weathering and physical damage. It’s lightweight and easy to install, which makes the work go faster, and it’s readily available through our wide distributor network. When and where you need it, Styrofoam Brand is there. DuPont Styrofoam Brand Roofmate Insulation is an extruded polystyrene (XPS) insulation engineered for use on heavyweight decks (e.g., reinforced concrete) with a ballast layer of gravel or concrete slabs. Because it helps the roof membrane maintain a steady temperature, DuPont Styrofoam Brand Roofmate minimizes the harmful effects of freeze-thaw cycles, weathering and physical damage. It’s lightweight and easy to install, which makes the work go faster, and it’s readily available through our wide distributor network. When and where you need it, Styrofoam Brand is there.

MethodUnitValue

R-value per in., min1- (ASTM-2)ft2•h•°F/Btu5

Compressive Strength, min.2D1621psi (kPa)40 (240)

Flexural Strength, min.C203psi (kPa)60 (350)

Water Absorption, max.C272% by volume0.3

Water Vapor Permeance, max.3E96perm (ng/Pa•s•m2)1

Coefficient of Linear Thermal Expansion (PPSH-49)D696 (ASTM-149)x105in/in °F (x102mm/m °C)3.5 (6.3)

Maximum Use Temperature- (ASTM-2)°F (°C)165 (73.8)

Flame Spread5E84-15

Smoke DevelopedE84-165