Installing Metal Roof Over Flat Roof

In a standing seam roof long single panels run vertically all the way from the eave to the ridge.

Installing metal roof over flat roof.

To install it slide the flat wide. Next you are ready to install the metal roof. You are essentially sealing off the metal roof with this flashing and you need to make sure that is securely fastened. 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.

The metal roofing will be installed onto the top of the boards. Step 3 install the metal edging. You can use 1 inch nails for the installation of eave flashing. Snap a vertical chalk line 1 4 inch from the rake edge of the roof using a chalk box.

Install the roofing screws vertically along each rib in the panel. Take a metal sheet and use inch metal wood screws to affix the roofing onto the wood slats. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Ensure that the line is square with the eave.

They need to be about every 2 feet apart. Install the first metal panel on the low end of the roof square to the eave. Use your neoprene washer head screws to secure the metal to the sheathing. Installing metal roofing over existing roofing material can usually be successfully.

For exposed fasteners avoid over tightening the fastener. Place the first screw. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. The eave flashing or edging is just the steel metal strips used to cover the entire perimeter of the 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. This is part 1 of a 6 part video series explaining how i installed a metal roof on my house. Install drip edge drip edge or edge metal is a piece of metal that extends approximately 0 75 inch beyond the roof s edge to channel runoff into your gutters. Use metal 1 inch roofing nails to install the metal edging that goes around the perimeter of the roof.

Space the screws about 12 in 30 cm apart.