How To Attach Roof Joists To Wall

Set the roof truss on each mark.

How to attach roof joists to wall.

Use screws to secure the rafter to the sill plate. The porch roof may match the pitch of your home or have a more shallow roof pitch. The positioning of your rafters will depend on the pitch of the porch roof. Some building codes around the country require the use of a hurricane tie also shown above to add extra reinforcement for holding down roof trusses in the event of very strong winds.

Joist hangers can help you mount each rafter to the house. 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. Measure and mark the location of the roof trusses.

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. 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. As with rafter style roofs toenailing is one of the most common ways of attaching a truss style roof to a wall plate. 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 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. Secure it with a joist hanger using the hammer and nails. The joist can be toe nailed into the top plate or a joist bracket can be used. Toenail a truss into the top of the wall plate by nailing through the sides of the bottom chord at a 30 degree angle.

Then force the rafter s tip snugly against the house wall. 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.