Shingle Over Existing Shingle Roof

Your house will probably be worth less.

Shingle over existing shingle roof.

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. The uncut shingle should hang a quarter of an inch over the roof edge. Shingle a roof over existing shingles save 75 give or take. 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.

Remove the ridge caps. When you should tear off your roof and start from scratch instead. Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. If your existing roof is fairly old there s a good chance the shingles are damaged.

1st and foremost your existing roof needs to be in reasonable shape. 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. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Doing it now will make it easier to keep the reroofing job clean.

In fact the only pro to a shingle over is it s cheaper and cleaner. If a shingle is. Why installing new shingles over old shingles can be good. Unfortunately the money you save by avoiding a full roof replacement comes out of the value of your house.

Although it sounds like a good idea we can assure you the cons heavily outweigh the pros. Mark the location of the top of the uncut shingle on the felt. All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof. Use a flat pry bar.

Roofing second layer of shingles roofing. Shingles that are raised or misshapen make it hard to lay a smooth flat layer of new shingles on top. Let s start with the good. To nail over a roof has to be near the end of its lifespan and still lying down pretty flat no lifted or cracked shingles blisters or bumps.

Use the chalk line to mark the line at that spot across the roof. Position one of the uncut shingles on top of a trimmed shingle. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. The roof also must have only a few penetrations a small amount of flashing and no walls that have to butt up against your shingles.

To shingle on top of existing shingles there are a few things you want to make sure.