Can a new roof go over the old one?
Some areas allow a second layer of shingles, but many roofers prefer a full tear-off so they can check and repair the decking underneath. Ask the roofer what local rules allow and what they recommend.
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Answered by RingaRoofer · New roofs and replacement
Some areas allow a second layer of shingles, but many roofers prefer a full tear-off so they can check and repair the decking underneath. Ask the roofer what local rules allow and what they recommend.
What to know
- A second layer adds weight.
- Problems in the decking stay hidden under a layover.
- Most areas allow two layers at most.
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