Roofing Over Old Wet Shingles

If you need to redo your roof you might be tempted to save some money by having another layer installed over the existing shingles.

Roofing over old wet shingles.

When you should tear off your roof and start from scratch instead. If the sheathing or wood is wet during the time of installation it can trap moisture inside of your roof leading to mold rot or other severe problems. If a shingle is. Can you have 1 layer of asphalt shingles on one side and 2 layers of shingles on the other side.

Why installing new shingles over old shingles can be good. On 2018 05 09 by christie. How to do it remove caps. That s also why building codes commonly limit re roofing to no more than two layers.

Shingles and roofing materials may not adhere properly to slick surfaces with high humidity. Remove the ridge caps. Doing it now will make it easier to keep the reroofing job clean. In a shingle over if some of the decking has buckled and warped over the years it likely isn t going to be noticed and fixed.

Is it okay to put the new shingles right over the old ones. Yes you can install a metal roof over shingles. On 2018 11 29 by diane. This can lead to increased rot mold and decrease the structural integrity of your home.

A wet installation can also cause a new roof to fail. Can metal roofs be installed over shingles. 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. 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.

Let s start with the good. Not if you re following the manufacturer s installation recommendations. Can reroofing be done over wet shingles. If you re considering getting a metal roof you may be wondering if you can install it over shingles.

Leak around a dormer which the homeowner never knew about long term effects of shingling over shingles. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Use a flat pry bar. On 2018 11 30 03 51 02 809154 by mod reroofing over wet 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. The problem with this is that as the metal heats up and expands or cools down and contracts it moves a little on the roof. All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof. When roofing over your existing shingles can be a good idea.