You can modify the trusses but it s an enormous amount of work.
Modifying roof trusses.
Most common attic trusses for homes and garages are made with 2x4 s.
Your parents roof rafters were probably made from 2x8 s and could have been 2x10 s or.
Also if you decide to do this you must work hand in hand with a licensed structural engineer that s familiar with wood trusses.
That way the last few feet at each end of the truss will not have to be modified and the changes should be less extensive.
The lower cord or joist forms the lower horizontal of the triangle supporting the attic floor and top floor s ceiling.
If you modify the existing trusses i have one suggestion.
These trusses are usually engineered by a structural engineering company to carry a specific roof load.
While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.
Trusses must be modified to allow room for attic space.
The upper cords or rafters form the peak of the roof.
If you really want to modify the framing of your attic and roof then consult with a licensed professional structural engineer.
Let s compare common roof trusses with the roof framing materials that were used in your parent s house.
If you live in a house with engineered manufactured trusses then don t mess with them.
If a lot of trusses are damaged or one has been significantly modified or cut then consulting a engineer is wise.
Click here to get free fast bids from local structural engineers who can help you modify your trusses.
If the house is new enough that you know how built the trusses give them a call.
To do this i d have to cut out and raise the bottom chords of the trusses.
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.
While they look the same you probably didn t notice the subtle differences.
Rather than trying to make a scissor truss do a raised center.
Measure the width of your roof trusses from inside to inside.
Use a chalk line to draw a line along the floor parallel to the lower edge of the roof from one end of the attic to the other on both sides.
Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs.
Don t modify cut wood trusses.
