Alberto,
I'll keep the 150 degree issue in mind. Usually though, I try not to keep anything of value in 150 degree heat. Here in Buffalo, New York, that's something I would never worry about as hell might freeze over before that happens. I know of several Top Gun builders in south Florida however who routinely use the method I have described. Additionally, I've had sun/heat damage done to Monocoated,"Solartexed" and fiberglassed models before in heat, a lot less oppressive that 150 degrees. I'm gonna continue to use these two products together as it's easy,it works and produce beautiful durable results for my planes. To each his own I guess

Good flying,
paul