Shingling A Roof Over Old Shingles

Has the same manufacturer s warranty.

Shingling a roof over old shingles.

Use a flat pry bar. If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. Whether it is the right choice for you depends on your home and the condition of your roof. Remove the ridge caps.

Looks just as good and lasts as long. If a shingle is. Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in. That s also why building codes commonly limit re roofing to no more than two layers.

How to do it remove caps. No missing shingles no gaps no holes in the roof no soft spots because of water damage. Rather than ripping off your old roof and putting a new one down you simply add a layer of shingles to your existing roof. All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof.

Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Use 1 5 or 1 75 inch roofing nails. 1st and foremost your existing roof needs to be in reasonable shape. Ask this old house general contractor tom silva reveals the best ways to secure shingles to a roof.

Shingle a roof over existing shingles save 75 give or take. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below. This involves less labor dropping. To shingle on top of existing shingles there are a few things you want to make sure.

Place the top of each starter shingle firmly against the bottom of the shingle immediately above it and even with the eaves then nail it into place. Overlaying your existing roof also comes with its own set of pros and cons. Manufacturers will still warranty the roof for the same amount of time as a re roof as long as it s done by a qualified installer. 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.

Installation is easier than for a tear off job because you can use the existing shingles as guides for laying the new ones. How to roof over existing shingles. Doing it now will make it easier to keep the reroofing job clean. See below for a shopping list tools and steps subscr.

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.