How to Fix Sagging Floors

I’ll show you step by step how to repair a sagging floor in an old house.

[jaywillems]

This is almost exactly what I'm working on in our home. Adding new beams to split the joist span (currently 2x8s spanning nearly 16ft = bouncy floor). We don't have a sill plate holding the joists down to the block stem wall, so planning to raise the new beams just enough to contact all joists to stabilize everything, then will rip shims to attach to the tops of the joists where needed to level everything out. I'm wondering if I should have torn out the subfloor to start with instead of getting this far all from below the house... your method looks a whole lot easier.

[JRCoronado]

hey did you use rebar for the concrete base under the blocK?

[joshsmith]

Cedar shim? Hmmm, I would assume they would be too soft and would use oak or plastic shims

[ilovephysics]

Is it possible to fix it this way for a 4th floor apartment ? And if so what's the cost? Thanks!

[hp]

Did you destroy those hard wood floors!!?!

[politicsreporter]

How much it cost my 30 feet tall townhouse has 2nd floor sagging. I am afraid it will be expensive.