Fix A Leak - 5LEconomical acrylic and membrane system An acrylic compound for waterproofing of iron, or tiled pitched roof applications, skylights, parapets, roof ridges, flashings and roof screws. Fix a Leak must be used in conjunction with a waterproofing membrane. As with any liquid and membrane system, the first saturating coat is critical. Applying many coats on top of the membrane does not yield proper results. Not recommended for areas of long term ponding or