
Preparation of GypsumConcrete Substrates
· Gypsum underlayment is mostly found in multipleuse dwellings. Normally, it is installed over a wood subfloor and is usually ¾inch deep or greater. The gypsum product is generally pumpedin and is a selfleveling product. Because it is pumped into the structure, the amount of water used in the mix, to make it pumpable, is very important. When the installation is in progress the manufacturers ...