Cutting Trusses For Attic Stairs

We would like to install a fold down attic stair with a rough opening size of 25 5 in.

Cutting trusses for attic stairs.

You can easily cut your ceiling joists and use the off cut if big enough to but end where the cut was and fix appropriately on the two adjoining joists trusses whatever. Replacement of these furnaces can be difficult and sometimes cannot be done without cutting or modifying a truss. This is done to hold the bottom chord from pushing the wall out. A truss functions as an interlocking system of framing members joined by gussets or metal connectors.

Lay a 4x8 3 4 sheet of plywood on each end of the truss on the bottom chord spanning to the two trusses on each side of the one to be cut. I have never built a staircase to attic trusses only drop down stairs but i am planning on leaving one truss out and doubling the ones to ether side to create a 4 opening. Do the same at the other end and then cut your ceiling to match the opening. Furnaces are often located in attic areas.

While they look the same you probably didn t notice the subtle differences. Your parents roof rafters were probably made from 2x8 s and could have been 2x10 s or. Our home has 2x4 roof trusses spanning 25 ft. X 54 in with the long dimension perpendicular to the trusses.

The components cannot be cut or altered or you risk ruining the structural strength. Currently there is limited attic storage on a plywood subfloor on the bottom chords accessed via a small hatch in a closet. Your attic floor and roof are probably framed with either trusses or with individual rafters and floor joists. Home owners sometimes will cut trusses to make more storage space in the attic or to do other modifications or remodeling.