DRYLOK® Extreme Masonry Waterproofer - Gallon
If water is leaking through existing masonry or you need to protect new construction, DRYLOK® Extreme Masonry Waterproofer’s proprietary formula is GUARANTEED to stop water.
Unlike ordinary paint that simply adheres to a surface and can be forced off by incoming water pressure, DRYLOK® Extreme Masonry Waterproofer actually penetrates the pores in that surface, bonding to the masonry and creating an impenetrable barrier.
Waterproof interior, exterior, above or below grade walls including basements, retaining walls, and bare concrete swimming pools, foundations, and more. For fish ponds, we recommend using DRYLOK® Original.
- GUARANTEED to stop water – withstands 15 pounds of hydrostatic pressure (PSI), equivalent to a wall of water 33 feet high
- Fully transferable 15 Year Warranty
- Withstands cat 4 hurricane winds
- Helps protect against radon gas penetration by reducing vapor transfer
- Green Wise® Certified
- Low-odor formula complies with all current VOC requirements
- Breathable film will not trap moisture in the masonry
- Easy cleanup with warm, soapy water