3. Truss worthy? In the case of trusses, the dormer will probably be just decorative. You can cut into trusses and modify them to make a real dormer, but it's very complex.

In the case of trusses, the dormer will probably be just decorative and will be connected to the top of the roof surface. You can cut into trusses and modify them to make a real dormer, but it’s ...

A: Dormers are eye-catching architectural features, and they absolutely can make the roof of a house look far more interesting. The good news is that you can add a dormer to an existing roof.

If your home has traditional roof rafters and an open attic, you can add a functioning dormer that you can walk into, install a window seat and have a real window that opens.