Ultra Fill is a lightweight gypsum based compound used for prefilling, leveling, patching and filling interior walls and ceilings. It is GreenGuard Gold certified.

Ultra Fill is an easy mixing compound reinforced with fiberglass fibers that are designed to fill voids without cracking or shrinking. It adheres well to concrete, plaster, drywall, brick or any other properly prepared clean and sound substrate. It fills voids and patches 1" thick or more with one coat. Ultra Fill is Class A rated per ASTM E84. 

32 lb bag