How Do You Install Corrugated Metal Roofing On A Flat Roof

Step 4 laying the sheets.

How do you install corrugated metal roofing on a flat roof.

Before you start to install corrugated metal roofing you need to figure out how much you need. The important thing is to make sure that you ve got the hills and valleys lined up straight across from each other. Do you want your metal roof to leak. To install corrugated roofing start by cutting your panels to length with an angle grinder.

You can also nail a chalk line straight every 2 feet to use as a guide. Use metal snips to cut flashing material. Corrugated metal roofing generally comes in sheets that are 3x6 feet in size 18 square feet. Lay and secure the first metal panel.

Measure the length of the roof and the breadth of one side. Install the roofing screws vertically along each rib in the panel. Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath. Use metal 1 inch roofing nails to install the metal edging that goes around the perimeter of the roof.

Finish the first side of the roof. Complete the first row. Measure the length of the roof edge with a tape measure. Otherwise you ll have trouble getting the corrugated roofing to lay flat like it s supposed to.

Screwing or fastening down a metal roof is one of the easiest parts of a metal roofing installation but it s also the most problematic. Attach the vertical closure strips. Can metal roofing be used on a low slope pitch roof. Lay the roofing felt.

The main cause of a leaking roof on a diy metal roofing installation is incorrectly fastening the screws. Sunday august 5 2018 the traditional metal roof types such as 5v crimp shown above and corrugated are rated by the manufacturers for use down to a 3 12 pitch three inches of vertical rise for every foot of horizontal run. 2 corrugated metal roof installation instructions. Step 3 install the metal edging.

Install gutters in valleys as needed. Your roof will have thousands of screw holes. Install metal flashing along the edge of the roof using a hammer and 1 2 inch roofing nails. Buy the metal panels.

Beginning at the outside edge of your roof place each panel directly onto the purlins that are attached to the roof trusses. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line. Next pre drill holes on the end and side ridges of the panels spacing the holes 6 to 8 inches apart.

Multiply those numbers and then double the result for the square footage of your roof.