Metal Roof Layers

Metal roofing weighs less than one pound per square foot.

Metal roof layers.

Water shield is the next roofing layer that creates a water proof barrier where ice or water can buildup near the roof eaves. Get free shipping on qualified metal roofing or buy online pick up in store today in the building materials department. Another added benefit is that the layers of your old roof will further insulate your home. Asphalt shingles can weigh up to four pounds per square foot depending on the brand.

A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. Most often made out of plywood this roof layer is installed over the framing in a typical roof install. Ice water barrier this self adhering water proof and self sealing membrane is applied to the roof deck. Metal is the best choice due to its very low weight per square foot and its unique design.

Where two parts of the roof meet in a. The quality and type of underlayments used on the project in the long term will affect the overall performance of the roof. Like most other things there are a few disadvantages of choosing metal roofs. Add strips of felt paper or polymer underlayment horizontally across the roof making sure to overlap the layers by at least four inches.

Installing metal roofing over shingles is the best solution. It s usually a peel and stick product that adheres directly to the roof deck. Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it. Otherwise they would be found everywhere.

Staple each strip at the ends and once per square foot in the middle of the strip. Disadvantages of metal roofs. Installation of either type of metal roofing underlayment is fairly straightforward. Selecting the right underlayments for a lifetime metal roof should be a primary concern for anyone thinking about specifying or choosing to install a metal roof on their home.

However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. Metal roofs can be much more expensive than shingles. You can usually see the underside of plywood decking from the attic. Roof deck is the roofing material that sits on top of the roof trusses.

Otherwise you will need to remove the shingles. Most roof decking is made from sheets of plywood.