Replace Shed Floor Joists

2 8 s come standard at 1 inch thick.

Replace shed floor joists.

This sheds floor rotted away and was removed years ago. A day until they re level. The shed has a wood frame and either particle board or plywood floor that unfortunately was placed directly on the ground. The timber size is generally very small often 2x1.

2x8s are used frequently for these projects. This will create a weak spot. Set a hydraulic jack and post under the beam and jack up the joists about 1 8 in. Jacking them up too fast may cause cracks in the walls and floors overhead.

You ll have to probably slide a new 4 by 4 board under the existing floor beams on each side of the shed to lift it. Tack a beam under the sagging joists. In many circumstances 16 inches would be your standard spacing for shed floor joist but this is just a rough guideline. Once you have all of the rotten wood gone spray down all of your joists with killz to protect them from rotting out.

Then use pry bars and your reciprocating saw to pry and cut the floor joist away from the subfloor. Make sure you check your joists too though because they may be beginning to rot also. Watch how i ja. View of shed floor with joists.

Make sure to get all of the damaged or moldy. Yes you can rip up the rotted wood and replace it. The supports to the floor would then be part of a shed foundation which could be a pad foundation or a foundation comprising timber bearers. Floor bearers are an idea introduced by some shed companies to really minimise the material cost of the sheds they produce.

Pry the floor joist from the subfloor with the back of your hammer. Two options that arise could be your wider 24 and your narrower 12 options for spacing. Start by cutting out a small 1 2 in 2 5 5 1 cm section of the floor joist with a reciprocating saw. When you replace the subfloor the new ends have to sit on the joists so cut out your wet subfloor along two joists on either side of the damage.

Nailing two 2x4s together will work to span about three joists unless the sag is under a weight bearing wall.