3 Considerations to Make Before Installing Metal Roofing Over Shingles

Posted on: 8 June 2015


There are several methods for installing metal roofing ranging from DIY kits to methods used by professional roofing contractors. One of these methods is to install metal roofing over your current shingle roofing. Before you choose to have this method used, either by yourself or a professional, there are a few things you should consider. Here are three of those considerations.

Reduced Noise

One of the benefits to consider about installing a metal roof over your current shingles is the ability to reduce the noise during rain or heavy winds. When you install a traditional metal roof, there is no layer to act as a buffer. The layer of shingles actually provides the buffer between your metal roofing and the attic.

Reduced Weather Damage

You may not think that having a double roofing material would help reduce water and weather damage. The truth is that your traditional shingles combined with a metal roof will provide a barrier to block this type of damage.

For example, if are in a cold weather area ice may be an issue. If water gets into your roofline, trusses, or into your attic it could freeze and cause wood breakage. This can be costly and may require and entire new roof. With the gap, you have a barrier to prevent that damage and allow any water that may be between the roofing layers to expand without causing damage.

Removing Layers

One thing you should consider, if you are doing this project on your own, is the layering limit for roof lines in your area. There may be a construction guideline that states you may only have a certain number of roof material layers before the entire roof needs to be removed. This is not only for construction safety, but may also pertain to your home insurance as well.

To ensure that you are meeting this requirement you can contact your local construction permit office or you can hire a professional contractor like Gold Coast Metal Roofing.

These are just a few of the points that you should consider if you are planning on installing a metal roof over your existing shingle roof. Ideally, you should have a professional contractor or home inspector visit the home to determine if this type of method can be used on your current roof line. This will give you the chance to see if there are any other issues to consider and if you should hire a professional for the actual construction.