How To Fix A Broke Floor Joist

Moving either side too much at one time.

How to fix a broke floor joist.

Photo by summer galyan. Correcting a problem joist is an easy repair and is usually accomplished by fastening a new joist next to a damaged floor joist doubling the thickness of the framing member. A contractor can fix a broken floor joist by placing another joist next to it and attaching with structural screws and glue. Slip an old work metal joist hanger onto the end of the joist.

In this video this old house general contractor tom silva helps a homeowner repair a cracked floor joist. Place one adjustable jack post about two feet past each side of the crack. Position a 2x4 post and hydraulic jack directly beneath the cracked end of the joist. When installing a new joist you may need to notch the bottom edge so it can fit over the foundation or beam.

Squeeze a generous amount of carpenter s glue into the crack in the floor joist. One way to fix joist problems is to fasten a few new joists next to a damaged floor joist in a process called sistering. I suppose somewhere in the world there are floor joists that need to be repaired that have wide open clear joist bays with no pipes wires or obstructions. I recently had to repair a broken floor joist that had cracked.

This is referred to as sistering the plan was to sister a new joist next to the old one. Fixing broken cracked sagging floor joists.