Second Layer Of Roof Shingles

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

Second layer of roof shingles.

A second layer is more difficult to install properly. I think you ve got a good life out of it. Make repairs before. It forces more oil to evaporate out of it and more of the materials that make it pliable and watertight.

Still you ve got no less than 17 years from it already. And shingles have started to separate. 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.

However there are good reasons it doesn t really cut down much on the amount of work. That in itself eats away at the. Examine the existing roof. 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.

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

You will get what you pay. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. That second layer of shingles won t last as long. I won t speak to a haphazardly done job.

In fact the extra layer can reduce your roof s lifespan by up to 40. Before you start hefting shingles to the roof consider whether or not the project is worth doing. This will force you to replace your roof earlier than expected.