The cements and aggregates mined and produced in the Caribbean Islands and Central America contain a much larger percentage of salts and other chemicals that significantly raise the level of alkalinity in the finished concrete. In addition, many historical buildings constructed over 100-250 years ago contain sands and aggregates from the beaches, resulting in significantly higher levels of alkali.
When water comes in contact with the high-alkali concrete, the calcium salts are drawn to the surface (called “efflorescence”). Regular paints or coatings normally do not adhere properly to these surfaces.
Damtite Powder Waterproofers can solve this problem. By using our 3 Step process, shown under Decorate & Waterproof, to Prepare, Repair, and Waterproof with one of our Damtite Powder Waterproofers as a base-coat, other elastomeric paints or finish coatings will adhere to Damtite Powder Waterproofer and perform better.