GSL® RH radiant heat underlayment is a fast, quick-setting gypsum cement formulated for radiant floor heating applications.

GSL RH with compressive strengths up to 3500 psi is one of the most durable, high strength thermal masses available. GSL RH provides exceptional surface hardness to stand up to continuing construction traffic.

GSL is designed for installation by trained contractors from DEPENDABLE, LLC.  Please consult with a local representative for a list of contractors in a specific geography.