Firm Fill Gypsum Concrete Underlayment

With excellent stc and iic ratings as well as over 105 ul listings firm fill gypsum concrete floor underlayment is an excellent choice for jobs needing compressive strengths up to 2200 psi. Firm fill 2010 floor underlayment has approvals from icc es and hud. Firm fill 3310 floor underlayment s fast setting surface rapidly eliminates water allowing for accelerated drying time and unparalleled levels of strength and finish over wood and concrete subfloors in new construction and renovation projects.

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