Deck Roof Framing

Most porch roofs use 2x6 or 2x8 rafters that form an upside down v across the ridge beam.

Deck roof framing.

Designing the deck roof this is where the real planning began as the design of the roof would drastically effect the appearance of the finished deck. Then run joists connecting the front of your roof with the rear every two feet along the length of your roof. Installing a roof over an existing deck isn t recommended unless your deck was originally designed to support the roof. This in depth section will teach diy builders to frame a deck from installing a ledger board and frost footings to framing the perimeter of the deck.

When bolting to the deck s structure be sure to use heavy duty galvanized lag screws that are long enough to penetrate the deck s framing by at least 2 inches. If the roof is attached to the deck it needs to be able to support the weight. In some situations you may be able to use the home s structure to support an overhead above a deck. Hardware and tools are included for assembly.

Porch decks also require larger footings than deck footings. The frame is metal and the sunshade is moveable. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. If the deck doubles as a porch it needs to be able to support no more than 80 psf.

While a typical deck is designed to support 55 pounds per square foot psf a roof requires 80 psf of support. The rafters can be attached 16 on center to the ridge beam using rafter ties. Build the frame of the roof on the ground. We put it together in an hour really easy.

If you are tying the shed roof into an existing roof on the house you will need to remove the shingles and sheathing to expose the roof framing. Frame up a box the size of the outer dimensions of your deck using 2 by 4 inch lumber. This pergola offers a metal slanted roof to provide coverage from the hot sun on your deck porch or patio. You will need to attach the porch rafters to the house roof rafters and replace the roofing and flashing.

Extremely happy with this purchase. Covered decks can be made with either stand alone roofs or when the deck is adjacent to a building with a roof connected to the building. As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes.