2nd Layer Roof Shingles

If a shingle is torn or cracked glue the broken piece back in place using roofing cement.

2nd layer roof shingles. How to put on a second layer of shingles evaluate the job. Below is an apartment building we did in lakewood. It isn t uncommon to layer a second roof right over the first and then tear everything off before you put a third layer down. You will see an example of the nesting technique.

A second layer is more difficult to install properly. Roofing second layer of shingles roofing. Before you add shingles over shingles you need to look at the existing roof to make sure. In fact the extra layer can reduce your roof s lifespan by up to 40.

You will get what you pay. This will force you to replace your roof earlier than expected. However there are good reasons it doesn t really cut down much on the amount of work. Though both these points are valid you will end up spending the same amount of money or more later to have two layers of shingles removed.

Does your roof leak when it rains. Before you start hefting shingles to the roof consider whether or not the project is worth doing. The goal is to provide a reasonably flat surface for the new shingles to lie over with no gaps greater than 1 2 inch. That in itself eats away at the.

The main case for adding a second layer of shingles is simplicity. To install a second layer of asphalt shingle roofing a special technique called nesting must be employed. Make repairs before. Nesting is when you install the tops of the new shingles in line with the bottom of the old shingles.

Examine the existing roof. That second layer of shingles won t last as long. A second layer of shingles will decrease the integrity of your new roof and lower its lifespan. Plus all that extra moisture and heat being applied to the first layer of shingles will make that first layer age faster.

Building codes and most municipalities will usually allow you to overlay a second though never a third layer of asphalt shingles over an existing shingled roof. Plus most building codes only allow for two layers of roofing. By not removing the first layer of shingles homeowners would be able to save on labor costs and shorten the time frame of the job. It s time for a new one.

How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. If you already have two layers of shingles then it is time to get a new roof. If you weren t the one to do the overlay who knows how long the bottom layer has been there. The second layer of shingles will trap heat which can result in the decomposition of both roof layers.

If the broken piece is lost cut a new piece to fit the existing shingle.