Second Layer Of Roof Shingles

You will get what you pay.

Second layer of roof shingles.

But check the shingle warranty from your shingle manufacturer. I think you ve got a good life out of it. 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. And so second layers generally don t last as long as the first layers.

Still you ve got no less than 17 years from it already. Roofing second layer of shingles roofing. 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.

How to put on a second layer of shingles evaluate the job. 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. In fact the extra layer can reduce your roof s lifespan by up to 40. Before you add shingles over shingles you need to look at the existing roof to make sure.

That can be either architectural shingles or conventional 3 tab shingles. Make repairs before. This will force you to replace your roof earlier than expected. A second layer is more difficult to install properly.

I won t speak to a haphazardly done job. Another issue is that when you add in the second layer it can add extra weight to your roof. Before you start hefting shingles to the roof consider whether or not the project is worth doing. That in itself eats away at the.

However there are good reasons it doesn t really cut down much on the amount of work. And shingles have started to separate. Examine the existing roof.