How To Build A New Roof Over The Existing Roof

The solution is changing the roof pitch or building a new roof at a higher pitch than the old roof.

How to build a new roof over the existing roof. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option a properly installed layover roof can look and function as well. Your roof is soft and spongy feeling if when walking on your roof the majority of it feels soft and spongy you may have some problems with the underlying sheathing of the roof. 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. Unfortunately it s not an option for everyone.

This provides added protection against ice dams. Sounds simple enough right. You must not build the new roof directly over the old. There are a few situations where roofing over an existing roof just isn t possible.

A new coat of shingles over decaying shingles will cause your roof deck to decay. Yippee the next. We are doing all the work ourselves so tearing off the old roof would be a real problem. How to tie a additions roof to existing roof roof additions to existing roofs how to construct a roof from an exsisting shead how to change a roof line how to attach a deck roof to existing roof how to add a roof over porch attache porch roof on house attach shed roof to house adding a roof to screened in porch adding a roof to existing.

We do not want to remove the existing roof so we are proposing to build directly over the old roof. Less labor is needed and there are much smaller refuse fees. Putting a new roof over a leaking roof won t remove the leaks. A mobile home roof over creates a unique opportunity to completely change the look of the home.

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. When you recover your old roof stays and the new roof gets installed on top. Roofing over your existing roof is not always possible.

I have finally confirmed that it s allowed in ontario provided the plan passes the building inspector.