Cleaning and Adhesion Testing
We wash the roof at a pressure suited to the surface, remove loose granules, rust scale and old coating, and let it dry fully. Fragile or brittle membranes get a gentler hand clean.
Before committing the whole roof, we apply a test patch with a strip of fabric embedded in it. After it cures we pull the strip, and the way it releases tells us whether the coating bonds directly or needs a primer.
