[Jonty30]

I would look into white shingles, so you don’t have to repaint every few years.

[Scrambler Bob]

I would look into white shingles, so you don’t have to repaint every few years.
= = =

Test some. Find a white shingle roof, and measure the temp (IR) device, and/or put your hand on it. Or put some outside in the sun for a while at the shingle store.

Then try a ‘blazingly’ white roof.

PS my white painted roof is about 30 years old, and finally starting to show a little gray (the mid coat color used to show if the painter covered everything).

And the paints have gotten way better since then (and more costly).

[mfish13]

A coating loaded with aerogel will not form a strong film. It will not take any abuse.