Categories of Roof Waterproofing Coating Systems

Categories of Roof Waterproofing Coating Systems

waterproofed roofGetting the most value from your commercial building and enhancing its durability is essential. Waterproofing your roof is one of the critical factors that affect a building’s integrity and longevity. It protects the roof from the elements and the detrimental effects of rotting and mold growth caused by water pooling.

Commercial roofing contractors in Houston and other locations use various roof waterproofing options. Your choice depends on your budget, desired durability, and UV and high heat exposure, among other factors. Here are some of the options available on the market for waterproofing your roof:

Polyurethane Roof Coatings

Polyurethane coatings are highly durable and offer efficient and resilient protection against water damage, UV exposure, and weather. They also have high tensile strength that allows them to resist contraction and expansion, making them the most ideal for high-stress areas. They can last for over 25 years with minimal maintenance and are therefore cost-efficient in the long run.

Acrylic Roof Coatings

These coatings are renowned for their reflectivity, which cools the roof and reduce energy costs. Acrylic roof coatings are eco-friendly and easy to use, as well as offer effective UV protection. However, they lack tensile strength, affecting their ability to resist wear and tear. Though low-cost, they are not durable since they cannot withstand ponding water for extended periods.

Bituminous Membrane Sheets

These are the oldest roof waterproofing systems. The bituminous membrane sheets have different thickness classes, which determine their durability. However, they are not UV stable; their joints are prone to leaking; and they lose quality fast when exposed to ponding water. As such, they have been replaced by other alternatives.

Silane-based nanotechnology, cementitious, and crystalline coatings are some of the third-generation roof waterproofing systems. They are, however, only ideal for sub-grade applications. This is because they are unable to accommodate cracks and movements associated with changing weather conditions and workmanship.

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