How To Attach Roof Joists To Wall

The bracket is a better idea for the fact that is prevents any type of warping or rollover of the joist when it is under heavy load.

How to attach roof joists to wall.

There are basically 2 different ways to attach a roof joist to the top wall plate. Then force the rafter s tip snugly against the house wall. Use screws to secure the rafter to the sill plate. If you decide on a shallow pitch porch roof use 2 by 6 foot rafters.

The positioning of your rafters will depend on the pitch of the porch roof. If it is impossible to attach the ledger to a floor joist then fasten the ledger to wall studs which are generally located on 16 inch or sometimes 24 inch centers and doubled up around doors windows and other openings. The joist can be toe nailed into the top plate or a joist bracket can be used. Temporarily nail or brace the ledger in place positioned and leveled at the desired height.

Using a block of wood as a ruler mark the ends for cutting. To cut sloping rafters for a house attached patio roof lay a rafter board so it rests on its edge on both the ledger and the beam parallel to the ledger. Secure it with a joist hanger using the hammer and nails. Another great way of attaching the truss end to the top wall plate is to use a simpson fastener shown in the picture above which you can find at your local lumber store.

Attaching wood framing members to a brick wall is tricky especially if the framing will support any load as it does when a roof intersects the wall. Joist hangers can help you mount each rafter to the house. The porch roof may match the pitch of your home or have a more shallow roof pitch. Toenail a truss into the top of the wall plate by nailing through the sides of the bottom chord at a 30 degree angle.

Set the roof truss on each mark. As with rafter style roofs toenailing is one of the most common ways of attaching a truss style roof to a wall plate.