Interior, below-grade cinderblock walls are often subjected to pressure from outside ground water saturating the soil surrounding basements. High build latex paints are often applied to interior walls to provide waterproofing benefits, and different paints can withstand varying levels of hydrostatic pressure from water. These paints must also resist efflorescence and alkali, which drive common failures seen in this segment. Published test methods detail testing up to 4 psi of hydrostatic pressure, however many commercial products on the market claim resistance to pressure levels upwards of 20-30 psi. Developing a robust laboratory test method is critical for screening and demonstrating performance from a waterproofing paint. Additionally, there are several important components in a paint formulation that enable this performance. Polymer composition and properties influence adhesion and hydrophobicity, both fundamental for water resistance. Extenders and other additives, such as rheology modifiers and dispersants, also contribute to the hydrophobicity and performance of a waterproofing coating.

Withstanding high levels of hydrostatic pressure through architectural basement paints

ACS Spring Meeting 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.