Roof Ledger Size

Related lumber wood engineering data.

Roof ledger size.

The ledger typically a 2 by 6 is usually designed to hold one end of the patio roof rafters. Structural deck ledger screws left are easier to install than 1 2 in. Max gap between ledger and wall sheathing is in so no you can t use the in. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.

Bolt with spacer option over the siding unless it s t 1 11. An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry. Bolts and screws must be located 2 in. Parts of a house attached patio roof.

Rafters should be attached to the ledger boards with sloped joist hangers and to the beam using type h ties. The ledger should be attached before the foundation is built for a deck patio roof posts and other structure. Diameter galvanized lag screws above because pre drilled holes aren t required. Plus you need to double fasteners at ledger butts and ends.

Typical rafter spacing codes will specify a minimum spacing of 16 inches 19 2 inches or 24 inches. It depends on the size of the deck the required live loads form snow etc in your area and the type of wall and attachment. You have not provided enough information to size the ledger safely. Down from top and up from bottom of ledger and staggered up down.

Rafter spacing rafters must be strong enough to hold the roof sheathing and the shingles. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. It is always better to have a large rafter rather than be concerned with a sagging roof. In this application the limiting factor in the connection is the wood ledger and band joist.

I would suggest using this awc calculator in order to determine size of the rafters needed. For heavy roofs or in. Maximum rafter spans for a patio roof. For instance the international residential code which differs by state and locality indicates in section 502 6 2 of its new jersey code that joists framing into the side of a wood girder shall be supported by approved framing anchors or on ledger strips not less than nominal 2 inches by 2 inches.

If your local building authority has a rafter spacing code you may not space rafters wider than required by code. This is something that greatly depends on size of the structure you are planning on constructing span and specie of the lumber used.