Designed for basements or rooms built over concrete slab, the Subflor system consists of 2x2-foot panels that are 7/8 inch thick and interlock to form a smooth surface ready for a finished floor covering. Each panel is surfaced with oriented strand board impregnated with water-resistant resins and waxes. On the underside is polyethylene plastic with 5/16-inch protrusions that create a thermal break.
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PB Topical Ref
