We replaced our 40 year old tar and gravel roof (with small light colored stones) with a dark colored architectural shingle. There was an immediate, noticable difference. On summer nights you could feel the heat radiating out of the attic after a long day in sun.
This was in a cold climate, albeit at high latitude, so long days and low sun angle in the summer means more insolation. Since we rarely get above 70F here, I didn't think it would make much difference. Of course, it's only noticable a couple months out of the year.
This was in a cold climate, albeit at high latitude, so long days and low sun angle in the summer means more insolation. Since we rarely get above 70F here, I didn't think it would make much difference. Of course, it's only noticable a couple months out of the year.