How Many Layers Of Roof Shingles Are Allowed

When it s time to replace the roof again and you have no choice but to start anew two layers is the maximum allowed in most areas you ll have to pay extra for the two layer tearoff and disposal.

How many layers of roof shingles are allowed.

Three layers of roof shingles too many for an insurance company. Consistent leaks shingle loss and mold growth can all point to the need for a new roof. Now you just have to decide whether to remove the existing roof shingles or recover the 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.

Did a home inspection yesterday there was two layers of architectural shingles. A roofing contractor will know how many layers of roof shingles are allowed in your area for your building but it is normal that you will be permitted up to three layers of shingles. How many layers of shingles are allowed on a roof. This was down on the coastal section of naples fl according to the wind map this is 140mph i can t find anything in the fbc on two layers.

This will also be constrained by other factors. Most cities and towns allow a maximum of two layers of shingles says chad muth president of muth company roofing in westerville ohio. In most cases two layers of shingles is advisable and three aren t normally required but if you live in an area that suffers from particularly strong wind or. Eliminating the tearoff can easily save 1 000 or more on a new roof but you re really just delaying the cost.

I live in milford pa how many layer of asphalt are allowed on a roof. I m not sure about milford but i personally would never have more than 2 layers for all the reasons stated in my post above. For many years it was acceptable to put even the third layer. 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. On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing. In some instances 3 layers may be allowed but this is rare. The contractor may do a walk on the roof and also inspect from the attic for any rot before installing a second layer of shingles.

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. I know this is incorrect especially down here in florida with the heat and being in the high wind debris zone. Most areas only allow for a maximum of two layers. 30 felt old roof covering and then new roof covering.

Once you have discovered how many layers of roof shingles are allowed the next decision you should make is whether you will have the existing shingles completely removed to make way for two or three new layers or whether you will have another layer of shingles placed on top of the existing layer. Asphalt shingles typically can have one more layer added over the top two roofs total.