Bleedthrough is a difficult category for roof coatings, since asphalt staining can be a problem even for otherwise high-quality products. TRC 7000 Perma-Coat Roof Coating came out with the strongest score in this category, keeping bleedthrough to an impressive 4. However, Elastek 127 Solar One Plus wasn’t far behind, with a similarly strong score of 6. If you’re concerned about bleedthrough affecting the appearance of your roof, then one of these two products is likely to be your best bet.
What is Bleedthrough?
If you have an asphalt roof, then bleedthrough is probably a concern for you. When the sun’s UV rays hit an asphalt roof, the oils in the asphalt rise to the surface and can stain the surface of the roof dark. This not only creates an eyesore, but can also detract from your home’s curb appeal. Understandable, most homeowners want to minimize this effect. Bleedthrough measures how effective a roof coating is from preventing the asphalt’s oils from staining your roof surface.