How To Install Metal Roof Panels Under Deck

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

How to install metal roof panels under deck.

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. Space the screws about 12 in 30 cm apart. 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. Work toward the ridge.

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. Then stretch a string between them. Lower than the purlin along the house 12 x 1 4 3. Install the purlin along the house and the outer purlin.

For exposed fasteners avoid over tightening the fastener. If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in. First mark all the purlin locations on the deck joists. In this video i cover measuring the roof figuring the metal th.

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. Install the first metal panel on the low end of the roof square to the eave. Install the roofing screws vertically along each rib in the panel. Place them directly onto purlins that are attached to the roof trusses beginning on the outside edge.

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. These will stop the entry of rain wind and pests. Place the first screw.