Second Layer Of Roof Shingles

How to put on a second layer of shingles evaluate the job.

Second layer of roof shingles.

And so second layers generally don t last as long as the first layers. Before you add shingles over shingles you need to look at the existing roof to make sure. Before you start hefting shingles to the roof consider whether or not the project is worth doing. And shingles have started to separate.

I don t know if a precise formula like that exists but the second layer does have less firm foundation than the first and it would be logical to expect shorter life span. It is common practice to add a second layer of shingles over an existing single layer provided the roof decking is intact and the roof surface is flat. However there are good reasons it doesn t really cut down much on the amount of work. You will get what you pay.

Still you ve got no less than 17 years from it already. But check the shingle warranty from your shingle manufacturer. That can be either architectural shingles or conventional 3 tab shingles. That in itself eats away at the.

In fact the extra layer can reduce your roof s lifespan by up to 40. Roofing second layer of shingles roofing. Make repairs before. It forces more oil to evaporate out of it and more of the materials that make it pliable and watertight.

I won t speak to a haphazardly done job. This will force you to replace your roof earlier than expected. I think you ve got a good life out of it. That second layer of shingles won t last as long.

How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. The second layer of shingles will trap heat which can result in the decomposition of both roof layers. A second layer is more difficult to install properly.