A structural ridge is the standard alternative to ceiling joists.
Gable roof ceiling joist layout.
The angles are basic and even the ceiling framing is a snap because it generally runs parallel to the rafters.
The image below shows a cross section of our simple 12 x 13 house from the joist span tablessection of this tutorial.
When constructing a gable roof the ceiling joists are laid out slightly differently.
Here we have a wood framed gable roof.
Use a 2 6 for the first ceiling joist laying it flat on the end wall.
If you want a simple roof go for a gable.
If you are framing a cathedral ceiling there are a couple ways to deal with the need for rafter ties.
This video applies to gable.
This is a short description of three methods for installing ceiling joists beneath a hip roof where rafters near the wall line don t provide much room to work.
Rafter ties or ceiling joists acting as rafter ties are required by code unless the house is designed so that the walls or a structural ridge beam carries the full load of the roof.
This house will have a gable roof and a 16 center area with a cathedral ceiling over the living and dining room areas the roof pitch will be 5 12 with a cathedral ceiling at a 2 5 12 slope the overhang will be 2 around the whole house.
Let s consider a basic gable wood roof framing design.
Carpenters contractors and do it yourselfers can usually educate themselves with on the job training but what would it hurt to watch a few videos or examine a few pictures about different methods and techniques before working on your next project get some great.
Otherwise they ll stick up above the slope of the roof.
Remember to mark and cut your ceiling joists with their crown up.
Depending on the building design finished ceiling surfaces may be affixed to a ceiling joist at the bottom of the roof triangle giving a flat ceiling between the opposing building walls or the ceiling may be affixed partly to the under side of rafters and partly to the under side of rafter ties giving a cape cod type ceiling design.
Along the top center of the house there is a beam to which are attached the rafters.
Ceiling joist layout and gable roofs conventional house framing.
In this design the tops of the rafters attach to a load bearing ridge beam that runs along the length of the roof.
The picture below shows the ceiling joist starts 50mm away from the brickwork gable wall.
If you are using 2 8 joists and 2 6 rafters for example the joist ends need to be clipped as shown in the drawing above.
This is to let the common rafter fit in between later.
Joists tie into the roof rafters and some times need to be trimmed a bit to follow the slope of the roof.
Let s consider pricing for a simple structure a 26 x40 gable style house.
