Strengthening Attic Floor Joists

How to make floor joists stronger.

Strengthening attic floor joists. Sistering is the process of adding a new joist next to each existing joist. Beefing up attic joists for living e jlc. Strengthening attic floor joists. To prevent sag in 2x6 s and strengthen at same time you could secure lengths of stainless steel or galvanized cable attach at each end of individual ceiling joists have cable go over a one or two spreaders or strut projecting down from the underside of the ceiling joist maybe 12 14 or so as not to lose too much headroom these could.

If your attic joists won t bear the weight necessary to finish out a living space but the engineer cleared them to support floor decking for light storage you can install inch plywood or. But you can still double the capacity of the existing 2x6s in the attic floor so first let s make sure that s enough for your situation. My calculations tell me assuming 2 southern yellow pine joists which are common in my area that 2x6s 16 inches on center will span 9 feet 9 inches with allowable deflection being the governing factor. Long spans of joists in newer homes may wobble or bounce from foot traffic.

April 7 2017 by zamira leave a comment. After several centuries of service floor joists in older homes may sag or crack.