Multiple layers of shingles can make it difficult or impossible for the nails to penetrate.
Roof over existing roof.
How to do it remove caps.
Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture.
When you recover your old roof stays and the new roof gets installed on top.
Roofing over an existing roof is also called reroofing or an overlay.
Use a flat pry bar.
With a traditional roof replacement we completely tear off your old roof and install a shiny new one in its place.
The cheapest option would be to leave the old roof in place and place the new rafters over the existing roof.
A roof over is the application of new metal or new shingles over the existing roof system.
The roof should be in sound.
Remove the ridge caps.
Adding another layer of shingles or metal over an existing roof could be your best solution.
How to install a roof over an existing roof determine the feasibility.
It is the process where roofers install a new roof over your existing one i e.
Premade trusses will form the skeleton of your new roof above your old roof.
Sounds simple enough right.
Hence putting a roof on top of a roof.
How does it work.
The condition of the existing roof is critical.
Doing it now will make it easier to keep the reroofing job clean.
Add a new layer of shingles which means that there is no tearing off of the old roof.
Use premade roof trusses premade roofing trusses will be easier and take less time than installing a stick built roof.
Inspect the condition of your current roof.