How To Install Corrugated Roof Panels Under A Deck

If your roof has a shallower pitch you may need to use additional weatherproofing measures.

How to install corrugated roof panels under a deck.

You will also need to attach furring across the deck joists or shed roof to attach the roofing to. Trim the 2 by 4s to make them thinner or screw an additional row to the underside of the first making it thicker as necessary to get the slope you want from row to row. The silicone will spread and adhere creating a seal. First mark all the purlin locations on the deck joists.

Make sure you drill oversized holes in the roofing to allow for thermal movement. Screw the new panel in place as described. Install the purlin along the house and the outer purlin. Lower than the purlin along the house 12 x 1 4 3.

Metal roofing is also available in the form of shingles. Use special screws with neoprene washers made for corrugated roofing. Install the panel so that the short lip overlaps the large lip. 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.

If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in. Beginning at the outside edge of your roof place each panel directly onto the purlins that are attached to the roof trusses. Continue adding panels until the roof is covered. To install corrugated roofing start by cutting your panels to length with an angle grinder.

For a secure and attractive finish you should use molding strips on top of the rafters. Next pre drill holes on the end and side ridges of the panels spacing the holes 6 to 8 inches apart. Then stretch a string between them. Adding a sloped sheet metal roof under a deck to make a dry place to store outdoor stuff like the wheelbarrow or kids toys.