On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing.
Can i put two layers of shingles on my roof.
Most building codes allow up to two layers of organic or fiberglass asphalt shingles.
Most building codes allow two layers of organic or fiberglass asphalt shingles on roofs with a 4 12 pitch or less and three layers on steeper roofs.
Steep sloped roof products such as tile slate metal and shakes only allow one layer.
A roof is one of the most vital components of a house.
If the structure can support the added weight a typical 20 square 2 000 square foot reroof will cost at least 1 000 less than a tear off job.
This is especially true if you ve overlayed your new shingles on top of warped shingles.
There are two ways of looking at it scrimp and cut corners to save up front or do the job right and maintain it so you won t have costs in the future.
Now you just have to decide whether to remove the existing roof shingles or recover the roof.
Replacing a roof can be very expensive and exhausting at the same time.
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.
Saving money is the name of the game with many home repairs.
Eliminating the tearoff can easily save 1 000 or more on a new roof but you re really just delaying the cost.
If you have done some serious research on roofing then you have probably heard about adding a second layer of shingles on top of the old ones.
Two roof layers can work if the existing roof.
But contractors who spoke with angie s list say best practices call for stripping the roof down to the wood deck to inspect it before installing a new roof.
Posted july 31 2018 by onpage marie.
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.
That limit pertains to roofs with up to a 4 12 pitch.
Pros and cons of adding a second layer of shingles.
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 cities and towns allow a maximum of two layers of shingles says chad muth president of muth company roofing in westerville ohio.
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.
For many years it was acceptable to put even the third layer.