Installing Metal Roof Over Flat Roof

The eave flashing or edging is just the steel metal strips used to cover the entire perimeter of the roof.

Installing metal roof over flat roof.

Snap a vertical chalk line 1 4 inch from the rake edge of the roof using a chalk box. 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. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Use your neoprene washer head screws to secure the metal to the sheathing.

Install the roofing screws vertically along each rib in the panel. Installing metal roofing over existing roofing material can usually be successfully. Space the screws about 12 in 30 cm apart. The metal roofing will be installed onto the top of the boards.

Begin on the left side of the roof working to the right. For exposed fasteners avoid over tightening the fastener. In this video i cover measuring the roof figuring the metal th. The installation of metal roofing is often easier and faster than other roof types and because of its simple design and generally large size can actually be installed directly on top of existing roofing materials like asphalt shingles and foam roofing.

You are essentially sealing off the metal roof with this flashing and you need to make sure that is securely fastened. Take a metal sheet and use inch metal wood screws to affix the roofing onto the wood slats. You can use 1 inch nails for the installation of eave flashing. 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.

In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Ensure that the line is square with the eave. They need to be about every 2 feet apart. Use metal 1 inch roofing nails to install the metal edging that goes around the perimeter of the roof.

This is part 1 of a 6 part video series explaining how i installed a metal roof on my house. Install the first metal panel on the low end of the roof square to the eave. Place the first screw. To install it slide the flat wide.

Next you are ready to install the metal roof.