Installing Metal Roof On Flat Roof

Take a metal sheet and use inch metal wood screws to affix the roofing onto the wood slats.

Installing metal roof on flat roof.

If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel. Place the first screw. Space the screws about 12 in 30 cm apart. For exposed fasteners avoid over tightening the fastener.

Install the roofing screws vertically along each rib in the panel. Use your neoprene washer head screws to secure the metal to the sheathing. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. 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.

The eave flashing or edging is just the steel metal strips used to cover the entire perimeter of the roof. Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Use metal 1 inch roofing nails to install the metal edging that goes around the perimeter of the roof.

You can also nail a chalk line straight every 2 feet to use as a guide. You are essentially sealing off the metal roof with this flashing and you need to make sure that is securely fastened. In this video i cover measuring the roof figuring the metal th. You can use 1 inch nails for the installation of eave flashing.

This is part 1 of a 6 part video series explaining how i installed a metal roof on my house. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. To watch the entire series from the beginning click here. Step 4 laying the sheets.