You can modify the trusses but it s an enormous amount of work.
Modifying engineered roof trusses.
If you really want to modify the framing of your attic and roof then consult with a licensed professional structural engineer.
To do this i d have to cut out and raise the bottom chords of the trusses.
Also if you decide to do this you must work hand in hand with a licensed structural engineer that s familiar with wood trusses.
Measure the width of the truss.
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Home owners should avoid cutting or modifying their roof trusses.
How to modify roof trusses.
At both of these marks position a 2 by 4 so that the bottom is on the floor and the top extends upward to a point.
Modifying roof trusses my client wants to add a 16 inch wide 4 inch deep tray ceiling in a room where the drywall ceiling is attached to the bottom chord of roof trusses.
Measure in from each side wall a distance equal to 1 4 of the total width of the truss.
Mark the lower.
These trusses are usually engineered by a structural engineering company to carry a specific roof load.
One use of trusses is for the support of a roof they are similar to roof rafters.