"Gyp-Crete Â® ", a mixture gypsum, Portland cement, and sand, is a building material used as a floor underlayment which is commonly used during construction for: .
Floor l…eveling prior to installation of floor coverings .
Sound reduction .
Radiant heating .
It should be noted that "Gyp-Crete Â® " is a brand name trademark of Maxxon Corporation (www.maxxon.com), however it has become general use as a "common builders term" for gypsum concrete by trade professionals. .
From the Manufacturer: .
Product Description: Gyp-CreteÂ® Floor Underlayment is one of the most efficient fire and sound control products available for multifamily construction. Standing the test of time since 1972, Gyp-Crete makes for safer, quieter living, and has become a standard in apartments, condominiums, townhomes, hotels and motels nationwide and abroad..
Good ventilation is necessary. Open windows until underlayment is dry..
Maxxon gypsum underlayments are inorganic and provide no source of nutrients to sustain mold growth.. ( Full Answer )