Replacing Roof Over Existing Roof

This provides added protection against ice dams.

Replacing roof over existing roof.

If you choose the latter you ll also have to decide whether to roof over your existing roof or whether to remove it. If your existing roof is fairly old there s a good chance the shingles are damaged. This is also an excellent opportunity to update the look and feel of your mobile home which can also. Some roofers install a layer of waterproof shingle underlayment wsu over the existing shingles at the eave end as would be done for a roof laid on bare sheathing.

Going the repair route. Difference between reroofing and roof replacement. A roof over is the process of placing a new roof or roof material over your existing roof. Replacing a roof can be expensive but if a roof contains only a small slope it s possible to raise the roof pitch of a house by building a roof over the old one.

Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option. Putting a new roof over a leaking roof won t remove the leaks. There are cost consequences either way. Roofing over an existing roof is also called reroofing or an overlay.

You re permitted to have two layers of asphalt shingles on your roof so if there s only one in place now you can have a new layer installed right on top. One way to minimize this problem is to go over the old roof and correct as many problems as you can before re roofing. This new roof with a higher pitch can be accomplished with premade roof trusses and typical asphalt shingles. That will save you as much as 1 000 and a fair bit of mess but it means the roofer can t inspect and repair the decking and flashing underneath.

Your house will probably be worth less. Putting new shingles over existing problems can leave you with a rather unattractive new roof. Shingles that are raised or misshapen make it hard to lay a smooth flat layer of new shingles on top. Usually you do not remove any part of the original roof which not only saves money but shortens the process and is a less unsettling process.

Unfortunately the money you save by avoiding a full roof replacement comes out of the value of your house. A properly installed layover roof can look and function as well. It doesn t take much more than a hammer some roofing nails and a handful of shingles to correct bumps gaps and protruding nails. However installing new flashings including special drip edge flashings made for reroofing will ensure a tight seal and a long life.

To fix it you ll need to remove the existing roof.