By 
This article offers tips on how to install metal roofing over asphalt shingles. In fact, it is a good idea not to dismantle the old roof because this will mean that you will save the time and effort that you would have spent removing the asphalt shingles. In addition, you will also have the advantage of having a stronger support for the roof of your house that is made of lightweight metal. However, one problem with the strategy of installing over old shingles is that their shape can be evident in the flat parts of the metal, thus damaging the appearance of the metal roof. Therefore, knowing how to install asphalt shingle roofing is important if you plan to do this project yourself.
One of the first steps to take when you want to install metal roofing over asphalt shingles is to be aware of the mechanical issues that need to be resolved in order for you to get this project done. One of these issues is how the old roof is ventilated and whether this would become a problem when laying the metal roof over the asphalt roof. One of the ways to remedy this problem is to attach some wooden battens or battens at regular intervals to allow for airflow. The spaces between the battens will depend on the manufacturer’s recommendations and the building code requirements of your area.
Another important issue to consider when learning how to install this roof over asphalt shingles is how to control moisture under it. This could be solved by putting felt or some synthetic material underneath. It should be noted that this will also greatly reduce noise generated by rain or hail. You’ll also need to make sure everything is straight and square or the metal shingles might not be installed correctly. Once you’ve made sure everything is square, you can draw a line to guide you when you put the first few metal shingles on. But before you start laying them, you’ll want to take a few minutes to familiarize yourself with the instructions contained in the manufacturer’s metal roofing installation guide.
Knowing how to install metal roofing over asphalt shingles is vital, especially for interlocking roofing systems. These shingles have interlocking mechanisms on all four sides and there are specific instructions you must follow when installing them yourself. If this is your first time installing a roof, you may want to seek some advice from contractors and other professionals. Don’t forget to ask them about safety issues, such as the fact that metal roofs are dangerous to walk on because they are slippery, especially when wet. It is also important to remember that making changes to metal roofs is more difficult than other materials. Therefore, it is important to do it correctly when you install it.