Can I Put Two Layers Of Shingles On My Roof

In fact the extra layer can reduce your roof s lifespan by up to 40. Having multiple layers of shingles is going to make your roof hotter because the heat gets trapped between the layers which could mean premature aging of the shingles. Reasons why you should not add a second layer of shingles it will shorten the lifespan of your roof.

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That limit pertains to roofs with up to a 4 12 pitch.

Can i put two layers of shingles on my roof.

Most local communities will only allow two layers of shingles on a roof although there are some areas that do allow up to three layers. Adding another layer of shingles seems like it would save you money by not having to pay your contractor to tear off your old roof. Two roof layers can work if the existing roof is in good condition but you shouldn t put more than two layers of shingles on your roof because of the weight. However there are good reasons it doesn t really cut down much on the amount of work.

When it s time to replace your roof there are several factors that might lead your roofing professional to recommend adding shingles on top of your existing layers. Most building codes allow up to two layers of organic or fiberglass asphalt shingles. A second layer is more difficult to install properly. I won t speak to a haphazardly done job.

The second layer of shingles will trap heat which can result in the decomposition of both roof layers. Cumming roofer provides free roofing inspections. How many layers of shingles are allowed on a roof. This will force you to replace your roof earlier than expected.

Reroofing a home is something ambitious homeowners can do and you can save time and energy by installing the new shingles over the old ones. Benefits of adding multiple shingle layers. Be sure to check your local building codes to be sure you are in compliance if you plan on doing the work yourself. This is especially true if you ve overlayed your new shingles on top of warped shingles.