Can I apply this ( white ) coating over my roof shingles ?
you have to understand the ACTUAL waterproffing of a shingle roof is
really the tar paper underneath. The shingles help protect the tar
paper or rubber coating underneath the shingles.
if your shingle roof is already leaiing or detoriating no doubt the tar
paper underneath iis bad too.
bad shingles means new roof. most shingles go 25 or 30 years so there
are other issues like flashing that most likely are due for replacement
the other issues is that shingles lose gravel, so even a perfect
coating over bad shingles will lose more gravel starting new leaks.
I don't claim to know anything about the heat on Tuscon because I have never
been there nut how about an coating it then a layer of earth to protect the
coating, it's becomming very popular but it's heavy and you need a little
pitch for drainage ...(maybe yall have all sand ) from North Carolina..That
was a wild guess by the way.
Modified bitument torch down is a good option for a flat roof. Can get in
white or unfinished and then top coat in a white for better reflectivity
(Helps in hot climates). Not a DIY project althogh I have done several as a
DIYer I would not recomend it w/o doing a lot of homework. Torch is about
$90. Material is not too expensive. Do not just get the rolled roofing at
the blue or orange store.
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