http://www.CoolFlatRoof.com/ - flat roof inspection on a house in Everett MA (just north of Boston) - in this video, you can see crumbling upper layer roof - rolled tar paper (roofing felt) saturated in coal tat pitch / asphalt) showing multiple spots of "crocodile skin" where tar is destroyed by solar UV rays and roof begins to leak. Under tar roof, you can see a layer of tar & gravel roof, which is also failing. Total thickness of roof is about 2 inches.
The old roof will be removed, and a new IB PVC flat roof will be installed, to make this roof totally watertight, and will also provide tremendous help in keeping the upper floor of this home much cooler. Right now even with AC unit in every roof, running on full power, they can't keep the temps inside the house below 75 degrees, on a 90 degree day. Learn more about IB PVC flat roofing materials - http://www.coolflatroof.com/flat-roof.php
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