Your existing layer of roof shingles is deteriorating and you need to get a new roof installed.
Reshingle roof over old shingles.
The nails in the shingle should come up with the shingle when you pry it off.
If the job is done correctly with the new layer of shingles laid flat over the existing shingles the old roof cushions the new one and serves as a secondary barrier should wind or water ever break through the new shingles.
Looks just as good and lasts as long.
As long as it s done right and under the right conditions installing new shingles over old ones can last as long and look just as good as a complete re roof.
But you must take care to install shingles correctly so they lie flat.
If you are looking to save time installing new shingles over old shingles is a possible roof replacement solution.
Pry the shingle from the roof.
Remove all of the shingles on the roof.
Installing a new roof over shingles takes less time than tearing off the old roof.
One question you might have is can i reroof over existing shingles the answer is it depends state regulations and the condition of your roof both play a role in determining if you need a roof replacement tear off vs cover over.
Although it sounds like a good idea we can assure you the cons heavily outweigh the pros.
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.
How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h.
Place a pitchfork flat garden shovel or shingle scraper under the shingle.
You want to be sure that you will be installing the shingles over only one other layer though.
That s also why building codes commonly limit re roofing to no more than two layers.
Roofing second layer of shingles roofing.
If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing.
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.
In fact the only pro to a shingle over is it s cheaper and cleaner.
Has the same manufacturer s warranty.