Will Roof Shingle Warranty Be Void If A Second Layer

This is especially true if there is huge snowfall.

Will roof shingle warranty be void if a second layer.

When you factor in rain or snow it will add even more weight. In most areas building codes allow for up to two layers of shingles installed on a roof. If two layers already exist you ll need to remove the old layers before installing a new layer of shingles. It can also cause the new shingles to fit to the old shingles causing bulges.

This can cause the roof to wear unevenly. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. That second layer of shingles won t last as long. In most cases if not all if you install a new roof on top of your old roof it will void the warranty.

All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof. Reasons why you should not add a second layer of shingles it will shorten the lifespan of your roof. All gaf roofing shingles and qualifying accessories the gaf products come with the great coverage provided by the gaf shingle accessory limited warranty and you don t need to do anything at all to get it. Installing the new roof over the old roof doing this in most cases will void or shorten your warranty.

A second layer of shingles will expend heat more slowly which will shorten the shingle lifespan. It can also cause the new shingles to stick to the old shingles causing bulges. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. The second layer of shingles will trap heat which can result in the decomposition of both roof layers.

The first is that a second layer of shingles will expend heat more slowly which will shorten the shingles lifespan. Most people want to add another layer to their existing roof to save money. In fact the extra layer can reduce your roof s lifespan by up to 40. Installing a new roof on top of your old roof will void or shorten your warranty in most cases.

If the job is done correctly with the new layer of shingles laid flat over the existing shingles the old roof cushions the new one and serves as a secondary barrier should wind or water ever break through the new shingles. This will force you to replace your roof earlier than expected. You could be adding weight to your roof with a second layer that your house cannot handle. Manufacturers believe that layering the roofing diminishes the overall performance of the roof.

However this is a particularly short sighted approach once you realize that layering roofing can often void the warranty. There are a couple reasons for this. For many reasons we don t recommend this and encourage you to be suspect of any company that wants to do it to cut costs. Before you reshingle a roof read our step by step guide for adding new shingles over old ones.

Any more than two layers of shingles can be too much for the roof to handle even if the local building codes don t outlaw it. In the event you experience a problem with your gaf products caused by a manufacturing defect this warranty is a great start.