Installing Metal Roof Over Flat Roof

Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

Installing metal roof over flat roof. To install it slide the flat wide. 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. 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.

Use metal 1 inch roofing nails to install the metal edging that goes around the perimeter of the 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. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.

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

Begin on the left side of the roof working to the right. The metal roofing will be installed onto the top of the boards. Place the first screw. This is part 1 of a 6 part video series explaining how i installed a metal roof on my house.

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. Snap a vertical chalk line 1 4 inch from the rake edge of the roof using a chalk box. They need to be about every 2 feet apart. Installing metal roofing over existing roofing material can usually be successfully.

Install the roofing screws vertically along each rib in the panel. Ensure that the line is square with the eave. Space the screws about 12 in 30 cm apart. You can use 1 inch nails for the installation of eave flashing.

Step 3 install the metal edging.