Firma Plug® Leakstopping Hydraulic Cement

A fast setting, expandable compound that instantly stops active water leaks in masonry surfaces. Sets hard in 3-5 minutes. Stronger and more dense than concrete, it can be used to repair any masonry surface.

Available in 2.5 Ib., 10 Ib., and 50 Ib. pails.

Technical Data Sheet PDF