To layout a common rafter, first you’ll need to know the pitch of the roof. Since you’ll be using more than one of these suckers, it’s a good idea to familiarize yourself with this method before getting into the tougher stuff. I could really go on and on with terms and definitions, but it might take up a few pages and you’d fall asleep, so we’ll just skip to the more important parts of the framing.Ĭommon rafters are one of the easiest types of rafters to layout. The rafters all tie into the top of this board to form the peak of the roof. Ridge Board – This is the solid piece of wood (typically a 2×12 or larger) that spans the length of the roof to create the ridge.
No joke needed here, it’s funny enough sounding on its own. Birds Mouth – This is where the seat cut and the heal cut come together to form the shape of a birds mouth.It’s also when you step on a razor blade with your foot. Heal Cut – This is the perpendicular cut to the seat cut that runs down the length of the wall.A seat cut also happens when you are wearing tight pants and you bend over and hear “Riiiippp”! Seat Cut – This is the notched cut where the rafter board sits on top of a wall’s top plate.It is not something you have to wear with a tuxedo. Collar Tie – This board provides additional support underneath the rafter where it comes together at the ridge board.Sometimes it forms the roof overhang as well. Barge Rafter – The rafter on top of a gable end.Jack Rafter – The shorter rafters that connect to the king rafter on a hip roof.King Rafter – The longest rafter on the side of a hip roof line – also known as the Elvis rafter.Valley Rafters – The rafters that create the valley of a roof.Hip Rafters – The rafters that create the hip on a roof.Common Rafters – The main rafters that support the roof.There are common rafters, hip rafters, jack rafters and white water rafters (the latter isn’t part of your framing though) Rafter/Ceiling Joist- These are the boards that support the roof sheathing.The following list includes a few of the basic terms you’ll need to know before you can talk the conventional roof framing talk: There is a little bit of terminology that you need to know before you break out the framing square and saw. Go old school on your next framing project by using these tips, terms and techniques for conventional roof framing. While this tough task isn’t for everybody, it does look good (but it might not be cheaper than trusses). If so, check out our article on building with trusses. Trusses? We don’t need no stinking trusses! Not when you conventionally frame everything! Well, actually, you might need trusses.
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