Roof Ledger Size

Down from top and up from bottom of ledger and staggered up down.

Roof ledger size.

Diameter galvanized lag screws above because pre drilled holes aren t required. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. 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.

Rafters should be attached to the ledger boards with sloped joist hangers and to the beam using type h ties. In this application the limiting factor in the connection is the wood ledger and band joist. You have not provided enough information to size the ledger safely. This is something that greatly depends on size of the structure you are planning on constructing span and specie of the lumber used.

Locating and mounting the ledger is normally a fairly easy process. I would suggest using this awc calculator in order to determine size of the rafters needed. Parts of a house attached patio roof. 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. 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. Typical rafter spacing codes will specify a minimum spacing of 16 inches 19 2 inches or 24 inches. Structural wood lumber engineering properties 5 and larger.

In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Related lumber wood engineering data. For heavy roofs or in. Plus you need to double fasteners at ledger butts and ends.

Bolts and screws must be located 2 in. Max gap between ledger and wall sheathing is in so no you can t use the in. It is always better to have a large rafter rather than be concerned with a sagging roof. Rough lumber cannot be less than than 1 8 3 2mm thicker or wider than the nominal finished thickness or width except that 20 of a shipment cannot be less than 2 32 2 4mm thicker or wider.

If your local building authority has a rafter spacing code you may not space rafters wider than required by code. The ledger should be attached before the foundation is built for a deck patio roof posts and other structure.