My foam roof (almost flat) was installed seventeen years ago, in 2000. We are having some leaking. If you sweep aside the gravel that covers the foam, and press the foam with your finger, the foam gives a little. It has a slightly spongy feel to it. Is this a sign that the roof needs to be replaced? Note that the leaking is limited to the perimeter of the roof, the portion that slopes up the parapet. Reply