Installing Metal Roof Over Flat Roof

Use metal 1 inch roofing nails to install the metal edging that goes around the perimeter of the roof.

Installing metal roof over flat roof.

To install it slide the flat wide. Installing metal roofing over existing roofing material can usually be successfully. 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.

Snap a vertical chalk line 1 4 inch from the rake edge of the roof using a chalk box. This is part 1 of a 6 part video series explaining how i installed a metal roof on my house. You are essentially sealing off the metal roof with this flashing and you need to make sure that is securely fastened. The metal roofing will be installed onto the top of the boards.

Take a metal sheet and use inch metal wood screws to affix the roofing onto the wood slats. 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. Step 3 install the metal edging. Next you are ready to install the metal roof.

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. Install the roofing screws vertically along each rib in the panel. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. In a standing seam roof long single panels run vertically all the way from the eave to the ridge.

Begin on the left side of the roof working to the right. 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. Install the first metal panel on the low end of the roof square to the eave. For exposed fasteners avoid over tightening the fastener.

Space the screws about 12 in 30 cm apart. 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.

In this video i cover measuring the roof figuring the metal th.