RE: White Siliconized Elastomeric RV Roof Coating
I used a product called Snow Seal {same stuff} on my old camper and it does lower the temps a bit. Not enough to write home about but it also gave my old camper a much longer life. I put it on the first time I discovered a leak and got many more years out of it. If it's an older trailer then it is well worth the cost and trouble. The camper was built in 1967 and always stored outside without any cover. It was still in use 7 years ago before I moved and gave up duck hunting and fishing. It was still hot in the summer and cold in the winter inside no mater what. It just didn't leak when it snowed or rained.