How To Install Metal Roof Panels Under Deck

Space the screws about 12 in 30 cm apart.

How to install metal roof panels under deck.

For exposed fasteners avoid over tightening the fastener. Place them directly onto purlins that are attached to the roof trusses beginning on the outside edge. Secure the metal panel to the deck by drilling 1 1 2 inch galvanized metal screws through the peak of the rib in 12 inch to 16 inch intervals. These will stop the entry of rain wind and pests.

First mark all the purlin locations on the deck joists. Install the first metal panel on the low end of the roof square to the eave. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Install the roofing screws vertically along each rib in the panel.

Then stretch a string between them. Place the first screw. 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. Step 2 install a wood support structure for your panels screwing a row of 2 by 4s running parallel to your wall every 2 feet along the underside of your deck.

Work toward the ridge. For a house roof the recommended minimum slope is 2 5 vertical inches for every horizontal foot but a nearly flat roof is fine for under deck installations. Lower than the purlin along the house 12 x 1 4 3. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.

In this video i cover measuring the roof figuring the metal th. Use your neoprene washer head screws to secure the metal to the sheathing. This is part 1 of a 6 part video series explaining how i installed a metal roof on my house. Close or seal off the ends with a wood or plastic strip under the panel at each end.