DRYLOK® Extreme Masonry Waterproofer

USA’s #1 Selling Masonry Paint 
15 Year Warranty

  • Prevents water from leaking through existing masonry
  • Protects new construction against water ingress and damage

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.

Quick Overview

Waterproof interior, exterior, above or below-grade walls including basements, retaining walls, and bare concrete swimming pools, foundations, and more

  • GUARANTEED to stop water – withstands 15 pounds of hydrostatic pressure (PSI) equivalent to a wall of water 33 feet high
  • Fully transferrable 15 Year Warranty
  • Withstands Cateogry 4 hurricane winds
  • Helps protect against radon gas penetration by reducing vapour transfer
  • Green Wise® Certified
  • Low-odour formula complies with all current VOC requirements
  • The breathable film will not trap moisture in the masonry
  • Easy cleanup with warm, soapy water


Product Features

  • Tintable, bright white, smooth finish formula features Flexible Encapsulated Polymers for the ultimate in waterproof protection
    Incorporation of a green biocide helps the dry paint film resist mildew growth
  • Size: 3.8 litre
  • Coverage: 3.7 – 5 square metres per litre each coat
  • No pre-mixing or pre-wetting
  • Application tools: brush or roller (preferred for first coat), sprayer
  • Dry Time: 1-2 hours
  • Coats: minimum of 2 coats for Warranty Coverage to apply
  • Recoat time: 3 hours
  • After 24 hours, DRYLOK® will accept a decorative topcoat using good quality latex paint


Masonry walls, brick, stucco, cinder and concrete blocks, poured concrete


I just wanted to let you know and the very helpful man I spoke to on the phone before I ordered a few weeks ago, that the Drylok I applied over existing paint in my garage… as instructed by the lovely man seems to have worked a treat. I painted as high up as I could (gib prevented me going higher than 600mm and then 500mm out from wall, onto the floor (raw concrete) with two coats and two days later we had about 7-days of constant rain, not always heavy but not much breaks in it. We had no leaking! Yay. The next test will be heavy persistent rain over a short period of time and I’ll let you know how it holds up. But so far so good.

Thank you very much for your advice and talking me through it, I really appreciated it. 


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