In case of how to install metal roofing over plywood, the process differs when compared to the other types of installation. The installation of metal is more difficult and hence requires more caution while performing. If you wish to perform this task on your own, then you need to take certain precautions. Read through the following information to learn about the basic steps that you should follow for this installation.
Firstly, when you are installing over plywood, you must make sure that the material has been nailed properly. Even if you are using metal sheets, if the nails are not properly done, you might have to go in for reinforcing nails or roofing material. Thus, the proper combination of the roofing material and nail size plays an important role in the proper performance of the roofing material.
Secondly, the installation of metal roof over plywood roof is very different from installing any other kind of roof. For instance, the top layer of the plywood roof is generally tile-like in nature. But the exposed side of the roof is actually thicker than the rest of the roof material. This thickness can be cut to fit the exact measurements of the opening that you want to make. You can cut this to fit the opening with the help of jigsaw or other cutting tools that are easily available at home.
Moreover, you need to measure the exact position of where you will be installing the panels. There are times when you have to add extra support for the roof sheathing. The method of doing this is by adding a ridge cap joist, which are often made of stainless steel, to strengthen the entire roof. Another method is to add additional support to the roof sheathing by fastening it to the rafters of the roof. You can choose either of these methods depending on the type of roof sheathing that you require.
Thirdly, there are two important steps that need to be followed for the installation of metal panel roofs. These include, first, the installation of the nails through which the panels of metal are to be secured to the rafters of the roof. At the same time, you also have to measure the distance from the bottom of the rafter to the top of the screw that will be used to fasten the nails. After you get the appropriate measurement, you can buy the nails of the appropriate size from the local hardware store. The next step involves, second, the hammering of the nails into the rafter’s base. This is done to ensure that all the nails have been placed accurately to ensure the adherence of the roof to the rafter.
In order to know how to install metal roofing over plywood, you must know that in this case the plywood serves as the underlayment. Under the proper circumstances, the underlayment plays a vital role to safeguard the structure from external pressure and also to maintain a balanced internal pressure. For this reason, you have to make sure that you choose the underlayment that suits the particular type of roof panels that you are going to install. It is best advised that you buy a few of them so that you can try them out before investing in one single one.