Before you nail it slide it a tiny bit out from the back of the f channel approximately 1 16 inch.
How to finish a gable end roof.
This is a very small amount but it will keep your soffit from bending later.
To finish framing the dropped gable i cut and installed a second top plate over the lower one.
Pull the tape measure along the length of your roof and climb up the ladder in the new position to take your measurement.
We will cover what your top bottom plates should look like in a gabl.
Extending a gable roof can be tricky since it involves working on the roof but you may be able to do it yourself if you only need to add 1 2 2 inches 1 3 5 1 cm.
The cleanest look for a gable end with a closed eave is to angle the soffit therefore eliminating the need to resolve the eave at the gable end.
These boards will be the full dimension of the gable overhang.
Get off of your ladder and reposition it at the other end of your roof.
The other end will be closest to you.
This configuration gives the look of an open eave but it has the same benefits ease of maintenance and energy performance as a closed eave.
Attach them to the truss ends entended out beyond the gable ends.
Begin at one bottom edge of the gable and slide the soffit into the f channel along the wall.
Use a tape measure to find the length of your roof.
They nail to the first rafter and then cantilever out to support the barge rafter.
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Determine how much overhang you want on the gable ends and cut the truss end board accordingly.
However for larger extensions you ll need to hire a professional to get up there and remove large portions of the roof before extending the overhang.
2x4 lookouts sit on top of the dropped gable with the ends left long.
Climb a ladder near the corner of your roof and tape the end of your tape measure against the rafter using duct tape.