How to Install Metal Roofing Over Asphalt Shingles – Get the Right Advice
If you are like most homeowners, you are probably wondering how to install metal roofing over asphalt shingles successfully. After all, they are the standard in commercial and residential roofing construction. Even so, it can be difficult to figure out where to begin. There are a few things to keep in mind before beginning, however. This article contains some tips and instructions for getting the job done safely and efficiently.
You will have to consult your local building authority to determine if you are allowed to install metal roof over two sets of asphalt shingles on your home. Most of them will even allow you to install one or two sets of metal roof, however. If they permit you to do so, contact your trusted local roofing company to see what they can help you with. They will be able to tell you if you are allowed to install them or not. It may be a good idea to get the approval in writing as well, just in case.
If you are unsure of how to install metal roofs over asphalt shingles in your home, you should check with the manufacturer or roofer you purchased the shingle from. They should be able to help you. Some manufacturers do not recommend using them, however, because of the increased risk of moisture leaking into the roof. Others, however, will not hesitate to install them if your home has been built to their standards.
You will also want to check with your state’s department of building. Some states will only allow the installation of non-permanent installations of metal roofing. These roofs are also called metal roofs. They are usually cheaper than permanently installed roofs and therefore, are not commonly installed in homes. They are typically used on structures that cannot be taken down. These could include buildings that are older than 65 years old, schools, hospitals and government buildings.
You should also check with your neighbors if they have any metal roofing installed over asphalt. Chances are, they have the right to sell it if they do not use it. This will also help you decide if this option is right for your house.
One important thing to remember when learning how to install metal roofing over asphalt shingles is that you need at least two layers. Otherwise, you will have a weak point for the shingles to puncture through. Your first layer needs to be at least four times stronger than the second one. The local building department can tell you the specific strength needed for your particular roof.