Quote:
Originally Posted by jgbama
The house inspector told me about the barrier that goes on the inside, in the attic. That should serve the same purpose, plus you wouldn't risk making the house stand out from all the neighbors.
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Yes, I hear that works pretty well, too
My reasoning behind going for the outside not the inside is:
1) the white coating reflects the heat before it heats up the roof, whereas the inner barrier reflects it back into the roofing material once it has already passed through. Not sure if this affects the roofing material (in terms of expansion etc.) but I should think that prevention is better than cure.
2) painting the outside should be quicker and easier (i.e. cheaper) than having workmen crawling around inside, especially at the edges where there is little space to work. Plus less likelihood of a foot coming through your ceiling.
3) the outer coating provides additional benefits as a sealant and should help to prolong the life of the roofing material.
I have looked at my neighborhood on Google Earth and the roof colors range from a deep, brick red through all types of brown, green and gray to almost white, so I don't think sticking out would be a problem here. If anything, it would give the neighborhood a tropical feel :-)