Undecided between two cool roof coatings? The best way to settle the issue is to compare both products side by side, so you can get an accurate idea of their strengths and weaknesses. For example, suppose you’re trying to decide between Elastek 127 Solar One Plus and SW Paints Mastic for your roof. What factors do you need to consider?
For roof coatings, two of the most important qualities are elasticity and tensile strength. These are the factors that determine whether a coating will truly last and provide its user with reliable value. Elastek 127 comes out on top in the elasticity category, but SW Paints Mastic offers superior performance in terms of tensile strength.
Elastek 127 also scores better in dirt pickup resistance as well as on the scrub test. SW Paints Mastic, on the other hand, wins the contest in white/reflectivity and bleed-through. At a glance, it may seem as if these two coatings are evenly matched, with no deciding factor readily apparent.
However, the story changes when we turn to adhesiveness. Elastek 127 offers superior adhesion to SW Paints Mastic for both roofs with good substrates and roofs with poor substrates. As a result, Elastek 127 edges out SW Paints Mastic to stand as superior in this comparison.