However you ll want to check with your local building department before you make any decisions.
New roof over existing shingles.
Installing new roof shingles over old effectively doubles the weight of the roofing so you have to make sure your roof structure can handle the extra load.
Yes you can install a metal roof over shingles.
The felt should be secured every six inches with nails or staples.
Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture.
Mold rot or other significant damage needs to be taken care of with a full replacement not hidden by new materials.
Installation is easier than for a tear off job because you can use the existing shingles as guides for laying the new ones.
When roofing over your existing shingles can be a good idea.
Use a flat pry bar.
How to do it remove caps.
This will help keep any moisture from getting under the felt.
That s also why building codes commonly limit re roofing to no more than two layers.
If a shingle is.
You need a flat surface to install a new roof over existing shingles.
When contemplating a new roof many people hope to simply do a shingle over and avoid the extra cost and mess of tearing off the existing roof and starting from scratch.
Inspect the condition of your current roof.
Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because.
Install a layer of roofing felt over the roof before you begin installing the new shingles.
Doing it now will make it easier to keep the reroofing job clean.
Because there is no tear off reroofing can go much faster and be much less expensive than a complete roof replacement.
Although it sounds like a good idea we can assure you the cons heavily outweigh the pros.
Reroofing is the process of layering one set of new shingles over a set of existing shingles.
How to install a roof over an existing roof determine the feasibility.
But you must take care to install the shingles correctly so they lie flat.
When you should tear off your roof and start from scratch instead.
Let s start with the good.
Building officials in some areas will only allow a re roof over one layer of shingles while officials in other places may allow you to place the roof over two layers of shingles.
You can save money because there s no dump fee for removing your old roofing and there s no need for additional felt paper over the old roof.
Multiple layers of shingles can make it difficult or impossible for the nails to penetrate.
There s a lot of visible damage.
Why installing new shingles over old shingles can be good.
If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing.
Remove the ridge caps.
The roof should be in sound.
Old shingles can curl over time.
In fact the only pro to a shingle over is it s cheaper and cleaner.
