Nail the end studs to framing in the existing wall.
Framing roof to wall.
Measure out each plumb cut.
The roof framing must also function as part of the roof diaphragm to transfer lateral loads to the shear walls below.
Input the pitch of the roof that you calculated above we ll use 7 12 for reference throughout on the framing square.
Remove a strips of drywall.
If you choose you can use a small rake in the attic to pull any insulation back from the edge.
The basic steps include.
Roof framing rafter layout.
Fasten the wall into place.
To limit the amount of drywall that has to be replaced use a ruler and pencil or a chalk.
Set the header on the trimmers and nail through the king studs to hold it in place.
Fasten the bottom plate by driving 16d nails through it into the floor.
Some carpenters like to make this.
Line up the square with the pitch end of the chord and mark the line with a pencil.
Then measure and nail the cripples into place.
From one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it.
The roof flashing is then placed up behind this through the wall z bar flashing on the outside of the vertical blocking backing material.
Because most roof flashing is required to extend up the wall a minimum of 4 and some a minimum of 5.
As you shim and plumb each section of wall drive 16d nails through the top plate into the framing with a hammer or nail gun.
Most simply use a nominal 6 piece of lumber.
This will the first point of the rafter measurement line.
Metal flashing prevents rain and run off water from seeping into the space between the roof and the wall and causing damage to the framing.
Proper flashing is crucial at a roof to wall intersection.
The roof framing must support the roof decking and sheathing and resist loads applied to the sheathing and transfer loads vertically to support walls or frames.
Double the studs at the ends of the walls and around any doors or windows before standing up the framed wall.
Then position and nail them to the plates.
At this point you will brace the wall while you stand up against the adjacent walls and square them up before nailing them together.
Roof framing doesn t have to be daunting but if it s your first try a simple gable roof say on a garden shed is the best bet.
In wood framing basics and wall plans that have openings with cripples above the header cut and nail together the king studs and trimmers first.
Remove the temporary collar ties.