I work with two contractors; one is in Denison Texas and the other in Sacramento, CA.
About 4 years ago our contractor in Texas decided to try our Energy Star ‘Cool Roof’ coating on attic heating and cooling equipment to see what happened. He goes in and sprays the AC unit, plenum and the flex or metal ducts. He also coats the water heater if one is present. Doing this normally drops a home’s total electric bill by around 25%, for your average 1,300 to 1,500 sq ft home. It proved to be very effective and he has been doing these little jobs since that time.
Word of mouth seems to be the ONLY form of advertising that works in Texas and word has spread like wildfire. These attic jobs are going to open up new markets for energy raters, insulation and other contractors.
We never gave this application a lot of thought until this year. We contacted some energy raters and they all said that going into attics and coating or painting anything on these units was totally unheard of. Well, I believe them as it was sure news to us.
I contacted the organization that apparently certifies materials for this type of applications. They looked at our website and our results and flat out said ‘NO. You are a roof coating, stick to that!” Well, we are proceeding without their blessing or their certification.
After four years of doing these little jobs our Texas contractor has finally realized there are too many of these little attic jobs out there and he is now going to allow others to do these jobs. Only catch is, he has to train the crew (or at least the supervisor) on how to do this and get a warranty.
Anyway, this seemed to be a unique application of a material only certified as a roof product. I have tested against other roof products many times. I have no idea if they are also doing ‘Attic jobs’ like these.