How To Add Second Layer Of Shingles To Roof

A roof is one of the most vital components of a house.

How to add second layer of shingles to roof.

Use 1 5 or 1 75 inch roofing nails. This is especially true if there is huge snowfall. Pros and cons of adding a second layer of shingles. You could be adding weight to your roof with a second layer that your house cannot handle.

If you have done some serious research on roofing then you have probably heard about adding a second layer of shingles on top of the old ones. Shingles add weight to your roof. Roofing second layer of shingles roofing. Add a layer of shingles over the newly repaired area before you install your second layer of shingles.

Posted july 31 2018 by onpage marie. In this video we provide details on how to install roof shingles over existing shingles. That in itself eats away at the savings. Secondly if your second layer blows off in a bad storm water will run right under the shingles and down all of the nail holes that have penetrated both layers of shingles.

This step is important because it brings the underlying surface back to a level height consistent with the rest of the roof plane. We discuss the nesting method which helps minimize an uneven appear. Your roof will not look as good as when you do a full tear off. Most likely your roof structure was designed for a dead load of one layer of shingles plus extra for snow and a safety margin.

That helps your final layer of shingles look flat with a proper installation. It would seem that an additional layer would be beneficial. Install the second layer. Place the top of each starter shingle firmly against the bottom of the shingle immediately above it and even with the eaves then nail it into place.

That second layer of shingles won t last as long.