Years ago acrylic based elastomeric was a more popular choice for customers simply because it was less expensive and turned their roof nice and white.
What we have learned with years of experience in specializing in commercial and industrial roof coating is that acrylic and other urethane based elastomerics are not a recommended waterproofing option for our customers. Acrylic based elastomeric, for example, is water based and will break down from UV and the wet, humid air in wetter climates such as Florida. Eventually this will lead to a catastrophic failure on any sloped metal roofing system. Urethane based elastomerics suffer similar chemical issues and eventual failures.
In 2005, Commercial Coating Pros transitioned over to using only a high-solids, industrial grade silicone elastomeric from leading manufacturers for all sloped metal roof applications. We have had 100% success ever since for every customer!
A metal roof in Florida that is only ten years old will have gone through at least 3,650 expansion and contraction cycles as they warm during the day and cool at night. That number could be far higher if you factor in midday rain showers that instantly cool the metal, only to expand again when the sun comes out.
SRM (Silicone Recovery Membrane) - 100% seamless waterproofing membrane UV protective and 89% reflective for extreme energy efficiency.
Spray Polyurethane Foam - Versatile for waterproofing and insulation