How To Install Metal Roof Panels Under Deck

Install the roofing screws vertically along each rib in the panel.

How to install metal roof panels under deck.

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 purlin along the house and the outer purlin. 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. Place the first screw.

Work toward the ridge. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. 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. Use your neoprene washer head screws to secure the metal to the sheathing.

These will stop the entry of rain wind and pests. 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. This is part 1 of a 6 part video series explaining how i installed a metal roof on my house. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.

Then stretch a string between them. Close or seal off the ends with a wood or plastic strip under the panel at each end. First mark all the purlin locations on the deck joists. Lower than the purlin along the house 12 x 1 4 3.

If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in. In this video i cover measuring the roof figuring the metal th. Overlap the edge of the roof by 1 inch. Install the first metal panel on the low end of the roof square to the eave.