Sub-Floor Smoothing Compound
This information reflects our best understanding of product composition in 2015, with the exception of the following components that have since had their composition updated: Fly Ash Residuals (updated 2022), Trace Elements in Unprocessed FGD Gypsum (updated 2023).
Subfloor smoothing compounds, or underlayments, are a thinned mix of cements, sand, and water. The mix is poured over slabs and other subfloors and spread across the floor. It naturally collects in low spots, resulting in a level and smooth...
Subfloor smoothing compounds, or underlayments, are a thinned mix of cements, sand, and water. The mix is poured over slabs and other subfloors and spread across the floor. It naturally collects in low spots, resulting in a level and smooth subfloor once it has hardened.