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WebNov 16, 2024 · Unlike fiberglass or cellulose, which is flammable, closed-cell spray foam provides excellent fire resistance. During manufacturing, closed-cell spray foam insulation is treated with fire retardants and has a class 1 fire rating making it a highly fire-resistant insulation material. WebNov 9, 2011 · Closed-cell foam insulation is excellent at resisting moisture and polyethylene in particular is often used as thermal insulation materials. Polyethylene sheeting is also easily laminated together to create thicker … WebThis foam has closed-cell construction, which restricts water, air, and gases from being absorbed. Cords have an ultra-smooth texture for a sleek surface that's easy to wipe down. Ultra-Weather-Resistant EPDM Foam Tubes Color: Black Temperature Range: -40° to 225° F Cell Type: Closed For Use Outdoors: Yes Density: 14 lbs./cu. ft. the two techies podcast