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Gypsum Concrete Underlayments

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Super Blue is a cost-effective solution to satisfy acoustical ratings and fire codes in multi-family construction. Designed for application over plywood or OSB subflooring, FIRM-FILL® Gypsum Concrete delivers a smooth, flat surface for finished floor coverings. 

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Installed over wood subfloors, FIRM-FILL® 2010+ delivers optimal compressive strengths while providing improved STC and IIC ratings in multi-family and single family construction. Reengineered to create a flatter, harder, and smoother surface for finished floor coverings. 

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Premier gypsum underlayment ideal for wood frame, light commercial, renovation, and hospitality projects. FIRM-FILL® 3310 Classic requires less water, allowing for accelerated drying time and unparalleled levels of strength and finish. 

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A unique poured floor underlayment, FIRM-FILL® 3310+ delivers best-in-class performance. It is ideal over wood subfloors to maximize sound control and is integral in a UL fire rated floor/ceiling assembly. 

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Solid, cost-effective solution for producing a durable, firm surface for finished floor coverings. Can also correct concrete problems in light commercial, renovation, and repair projects. 

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Engineered for thin capping existing concrete floors that may be damaged, jagged, or uneven. FIRM-FILL® 4010+ provides outstanding bonding characteristics to give old concrete floors new life. 

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Ideal for multi-family and mid-rise commercial projects with light-gauge steel frame construction and corrugated metal deck. FIRM-FILL® CMD is an economical solution to build higher and faster and still achieve a smooth, flat surface. 

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Designed specifically for use in hydronic or electrical radiant heat systems. GYP-SPAN Radiant® is the perfect solution in custom residential housing to create a thermal mass for even distribution of heat where it matters most - under your feet. 

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TRUE-SCREED® Cementitious Leveling Underlayment (CLU) is a budget-friendly, cement-based underlayment that is recommended for cracked or damaged concrete, new construction and renovation projects, as well as commercial buildings.

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