Notching Roof Rafters

I noticed that the lumber don t know whether to call them joists or rafters comes down from the peak and they had to notch it.

Notching roof rafters.

Up here notching the gable end truss is common it is done to support the lookouts and fascia on the end of the gable. Birdsmouth joints cut into roofing rafters and mounted in place on top of the wall plate. 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. If is wasn t for this joint a rafter or roofing joist would only balance on top of the wall plate making fixing difficult not to mention the fact that there wouldn t be any solid connection between the roof and the supporting walls below.

Notching roof rafters to headers. This trick worked for me. If you ve wondered how to frame a lean to roof off a pole barn this video will show you how i did it. More truss makers are switching to drop gables where the only notching is on the 2x6 outrigger itself.

The new roof will start at the back of the house go up to a peak and then down to rest on the entrance header to the kitchen. At the top where the rafters meet they are either angled to meet at a point or attached to a horizontal ridge beam. We are changing our flat roofs to peaked ones. Please consult a professional before making any cuts i am not a professional framer or roofer nor do i claim to be.

Use a tape measure to measure the entire width of your building. Then force the rafter s tip snugly against the house wall. Each beam is notched at the bottom called a birdsmouth so that it rests flat on top of each wall. Using a block of wood as a ruler mark the ends for cutting.

Measure as precisely as possible down to the 1 4 inch 0 64 cm 1 8 inch 0 32 cm or 1 16 inch 0 16 cm. Since the webbing in the truss is vertical it is considered by building inspectors to be ok.