How To Install Corrugated Metal Roofing Over Plywood

A corrugated metal roof is quieter than pvc when it rains.

How to install corrugated metal roofing over plywood.

Metal roofing panels rated for architectural use attached to purlins horizontal pieces of wood or metal fastened to roofing trusses are structurally sound when installed according to your roofing manufacturer s instructions and local building codes. While they didn t used to be considered the best metal roofs for houses corrugated metal panels are gaining popularity due to their strength energy efficiency and resistance to corrosion. When you decide to install corrugated metal roofing you just need to make sure that you have the right materials. Steadily work your way up towards the roof ridge.

Begin installation of panels at the bottom of the roof along the eaves. Ensure that the plywood deck is strong enough to withstand the added weight of the metal panels. To secure it measure it roll it out over the plywood cut it to the dimensions of the roof with a roofing or utility knife and finally hammer it securely to the plywood with 1 2 inch roofing nails. The plywood should be clean and free of raised nail heads to provide a uniform deck structure for the metal.

As you place the upper panel over the panel below overlap by 1 inch. Energy efficient and available in a variety of colors that will. But it seems the condensation will affect the 2x4 strapping. Corrugated metal roofing can be a convenient and relatively affordable way to provide protection without the need to install metal shingles.

This diverts water run off away from the roof boards. Remove the old roofing. I was planning on putting plywood over the rafters and cross the rafters with a 2 x4 every 16 to secure the metal roof to. On top of this underlayment goes a slip which protects the material from tearing as the metal roof expands and contracts with changing weather.

For many applications a layer of plywood underneath your metal roofing is an unnecessary expense. One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms. Install the first row of metal panels so that they overhang the roof by 2 to 4 inches. In reading online it seems wise to install a vapor barrier over the plywood to prevent condensation from getting adsorbed into the plywood from the steel roof.

Install waterproof felt over the plywood to add protection against moisture. Moreover a corrugated metal roof is highly durable and will last for decades. Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas.