Replacing Floor Joists

Repair sagging cracked or broken floor framing.

Replacing floor joists.

Replacing a foundation floor joist requires protective gear experience with carpentry tools and the ability to work in areas with limited space that restrict movement. How to repair or replace a subfloor. If you have sagging cracked or twisted joists which can happen in older houses this project will provide the extra support the floor needs. Joists are usually supported by a sill a long horizontal timber that s the lowest part of the framework and rests on the foundation or a girder a large beam that s the main support of the building.

Step 1 remove the floorboards. 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. The rim joist fig. What follows should give you all of the information you need to accomplish this task.

When replacing rotted floor joists it s important to be sure the girder and sill are still intact. While it is a good idea to replace rotted material with 2x8s it may require some notching to fit between the sub floor and ledger board. If you don t have any carpentry experience you may want to call a professional carpenter to handle the project. This part of.

It can be a. Replacing a floor joist incorrectly may weaken the structural integrity of your house. I recently had to repair a floor joist that had cracked. While replacing floor joists is a complex process it is well within the capabilities of a dedicated homeowner.

Replacing a floor joist is a big job. This article provides step by step instructions and pictures on how to make structural repairs by sistering floor joists alongside weak joists. B the framing member that runs around the perimeter of your house and that the floor joists butt into often gets riddled with large holes this space is the logical exit point for dryer and furnace vents big electrical service wires and fireplace fresh air intakes.