Reroof Roof Over Wet Shingles

On 2018 11 29 by diane.

Reroof roof over wet shingles.

Some roofers install a layer of waterproof shingle underlayment wsu over the existing shingles at the eave end as would be done for a roof laid on bare sheathing. Can reroofing be done over wet shingles. Has the same manufacturer s warranty. The quick answer is yes you can re roof architectural shingles over existing architectural shingles however you must check with the shingle manufacturer as well.

Reroofing is the process of layering one set of new shingles over a set of existing shingles. This provides added protection against ice dams. That s also why building codes commonly limit re roofing to no more than two layers. Installing a new roof over shingles takes less time than tearing off the old roof.

On 2018 11 30 03 51 02 809154 by mod reroofing over wet shingles. In this video we provide details on how to install roof shingles over existing shingles. 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. All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof.

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 nrca national roofing contractors and manufacturers association roofing manuals construction specifications institute standard federal construction standards from various agencies and internationresidential building code used by most states all prohibit placing either the water barrier membrane or shingles over wet substrate. We discuss the nesting method which helps minimize an uneven appear. How to re roof under air conditioning units which are on top of roof.

Having said that it will be nearly impossible to get a good looking quality installation. Looks just as good and lasts as long. Not if you re following the manufacturer s installation recommendations. 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.