Firm Fill Gypsum Concrete Underlayment

The original firm fill gypsum concrete floor underlayment is designed for use in multi family housing to satisfy acoustical ratings and fire codes. An innovative product that elevates gypsum concretes to an unprecedented level of unyielding performance. 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.

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