TRADITIONAL ROOF WATERPROOFING SOLUTIONS
In the early 80s, standard roof coating systems used to treat concrete roofs from further leaks included cementitious coating, torched-on Bituminous Membrane, rolled acrylic coatings, and polyurethane coatings. Conventional coatings like these offer specific advantages but would only be a short-term solution today. Most of them could not be exposed to UV as it will degrade the system, causing premature coating or membrane failure. Due to poor elongation properties, epoxies and cementitious coatings are rigid and not designed to fix cracks. Epoxies are likely to chalk, and polyurethanes will degrade when exposed to a warm climate with high UV and thermal expansion.
Most waterproofing membranes require a layer of protection to be applied. When this conventional system fails, and the roof leaks, an exposed waterproofing with high abrasion resistance and stability under UV is ideal for re-waterproofing projects as you do not have to remove the existing screed and waterproofing membrane and just lay the new membrane over it.
Concrete is predisposed to cracks due to shrinkage, which could compromise the waterproofing membrane on a flat roof. Similarly, metal decks and metal screws corrode over time, which could lead to water seepage issues. This can be a critical issue when the roof leaks and a solution is required.
