Second Layer Of Roof Shingles

That second layer of shingles won t last as long.

Second layer of roof shingles.

Roofing second layer of shingles roofing. I won t speak to a haphazardly done job. The second layer of shingles will trap heat which can result in the decomposition of both roof layers. Another issue is that when you add in the second layer it can add extra weight to your roof.

In fact the extra layer can reduce your roof s lifespan by up to 40. And shingles have started to separate. That can be either architectural shingles or conventional 3 tab shingles. However there are good reasons it doesn t really cut down much on the amount of work.

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. But check the shingle warranty from your shingle manufacturer. Still you ve got no less than 17 years from it already. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h.

Before you start hefting shingles to the roof consider whether or not the project is worth doing. That in itself eats away at the. Make repairs before. Because the first layer holds a lot of heat and that can over the long haul wear out the second layer because that heat is the enemy of the asphalt shingle.

This will force you to replace your roof earlier than expected. You will get what you pay. And so second layers generally don t last as long as the first layers. Examine the existing roof.

It forces more oil to evaporate out of it and more of the materials that make it pliable and watertight. Before you add shingles over shingles you need to look at the existing roof to make sure. How to put on a second layer of shingles evaluate the job.