This 3 lb high-density closed-cell spray foam creates a strong, rigid foam structure designed for applications that require greater durability than standard insulation foam. Providing approximately 130 board feet of coverage, it is ideal for high-traffic roofing areas, service zones, night seals, void filling, and commercial or industrial insulation projects.
Its high-density formula is also well-suited for concrete lifting support, slab stabilization, pool deck support, and filling voids beneath settled concrete where a firm, expanding foam is required. In addition to providing excellent thermal insulation, the closed-cell structure helps improve structural support, reduce air infiltration, and deliver long-lasting performance in demanding applications.
Engineered for strength, durability, and reliable insulation, this spray foam is an excellent solution for professional contractors and serious DIY users seeking dependable, long-term results.
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BUILT FOR HEAVY-DUTY FOAM APPLICATIONS – This 3 lb/ft³ closed-cell polyurethane foam is designed for jobs that need more strength than standard insulation foam, including commercial insulation, roofing support, void filling, stabilization work, and rigid foam build-up.
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HIGH-STRENGTH 3 LB FOAM FORMULA – With approximately 40 psi compressive strength when tested to ASTM D1621, this high-density foam creates a firm, rigid layer for demanding applications where durability, load resistance, and long-term stability matter. The cured foam is suitable for walkable applications, high foot-traffic areas, and concrete lifting support where a dense, rigid expanding foam is required.
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MADE FOR ROOFING & SERVICE AREAS – A strong choice for roof repair details, temporary night seals, service zones, and areas where routine maintenance traffic may occur, helping provide a tougher foam surface compared to lower-density spray foams.
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RIGID VOID FILLING & STABILIZATION SUPPORT – Expands into gaps, cavities, and voids to help support concrete slabs, pool decks, walkways, and other areas where a dense, rigid expanding foam is needed for stabilization or fill support.
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CLOSED-CELL INSULATION PERFORMANCE – Provides an initial R-value of 6.6 per inch, adding insulation value while creating a dense closed-cell foam layer.
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HELPS RESIST AIR & MOISTURE MOVEMENT – Formulated with approximately 94% closed-cell content when tested per ASTM D2856, helping reduce air leakage, limit moisture movement, and improve dimensional stability when properly applied.
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FOR COMMERCIAL & INDUSTRIAL PROJECTS – Suitable for cold storage areas, industrial tanks, cargo containers, roofing details, commercial buildings, equipment rooms, and other applications that require a tough, rigid, high-density closed-cell foam.
