Dupont XPS 250 Blue Board - All Sizes Size:2.5 in. x 4ft. x 8ft (R12.5) or directly beneath the concrete

or directly beneath the concrete slab to complement the insulating sheathing envelope around the building framing

both of which act as vapor retarders and provide a neat

which makes it suitable for roofing applications

or how well a material resists heat transfer

and is ideal for larger spaces

Dupont XPS 250 Blue Board - All Sizes Size:2.5 in. x 4ft. x 8ft (R12.5) or directly beneath the concretePlease Note We Can Not Ship To The Following States: California, Colorado, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, Vermont, Virginia, Washington XPS Insulation Blue Board is nonstructural, rigid board insulation manufactured of Extruded Polystyrene Foam (XPS). Blue Board can be used both on the exterior and interior walls to give you a continuous insulation barrier that can increase the