Quote:
Originally Posted by strider3700
with that foam mated right to the tar shingles does that mean you throw away the insulation when you replace the roof? Seems like a huge waste if so.
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I guess so, but that technology has only been around for 6-8 years, so it hasn't needed replacing yet. Most houses here with tar shingles aren't more than 40-50 years old, and the standard procedure when reroofing is to just add another layer of shingles every 20-30 years, and to pour a layer of tar every 5-15 years. Most new houses built in the last 10-15 years have a metal roof on top of tar shingles (with an air space in between), and foam or mineral wool insulation on the inside.
ToolingJim - Whatever the reroofing and insulating method you choose, remember to leave some room for a solar panels
