Dependable’s PRONTO ULTRA™ is a gypsum based patch and a great floor preparation product. PRONTO ULTRA™ is a fast setting/ fast drying latex modified gypsum based floor underlayment patch. It is used to patch or fill interior wood, above, below or on grade concrete substrates.
PRONTO ULTRA™ offers compressive strength of 3,000 psi., is moisture resistant and mold/mildew resistant.
Read more about Pronto Ultra: https://www.floorprep.com/feather-and-patch/pronto-ultra/