I am now heavily involved in these coatings from www.icc-astec.com and we have coated every concievable type of roof and surface, with excellent results.
The benefits are countless: Seemless vapour barrier, waterproof membrane, insulator, radiant reflective coating, I could go on and on.
We spray coated a chilled beverage warehouse in South Louisiana, because their chiller units never shut off. Now they cycle normally according to load, and the facility dropped their electric bill $35,000 the first year.
Please check out their website. Another excellent one is www.supertherm.net
Best of luck, and Merry Christmas.
Brian in Swampland.
If you call these companies, please tel them that Brian Wood in Lake Charles LA. referred you to them, thanks. (337) 430 4649.