How To Add Second Layer Of Shingles To Roof

Use 1 5 or 1 75 inch roofing nails.

How to add second layer of shingles to roof.

This step is important because it brings the underlying surface back to a level height consistent with the rest of the roof plane. Replacing a roof can be very expensive and exhausting at the same time. Most likely your roof structure was designed for a dead load of one layer of shingles plus extra for snow and a safety margin. Add a layer of shingles over the newly repaired area before you install your second layer of shingles.

A roof is one of the most vital components of a house. That in itself eats away at the savings. Your roof will not look as good as when you do a full tear off. We discuss the nesting method which helps minimize an uneven appear.

That second layer of shingles won t last as long. 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 helps your final layer of shingles look flat with a proper installation. 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.

In this video we provide details on how to install roof shingles over existing shingles. Pros and cons of adding a second layer of shingles. Posted july 31 2018 by onpage marie. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h.

This is especially true if there is huge snowfall. When adding a second layer of shingles the bumps or imperfections from the old roof will transfer to the new layer. Shingles add weight to your roof. Install the second layer.

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.