Do You Have To Replace Subfloor To Replace Floor Joists

Use trus joist tji joists or kiln dried performance tested lumber such as weyerhaeuser framer series lumber which is more dimensionally stable than green lumber.

Do you have to replace subfloor to replace floor joists.

Homes built on a slab foundation may not require them as many types of flooring can lay directly on top of the concrete. A subfloor provides stability and a level surface. Making precise cuts allows you to replace the section without installing additional backing or blocks at the floor joists. 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.

Moisture and pest infestation can damage subfloor. While replacing the entire subfloor may not be necessary you will have to replace the damaged pieces to prevent the rot from spreading. The subfloor is usually made from plywood or particleboard attached directly to the joists although it can be concrete in the basement or on the ground floor. Homes with floor joists need a base to provide a surface on which to lay carpet ceramic tile hardwood laminate and or vinyl.

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. Your floorboards squeak loudly. If you notice a soft spot under carpet or wood flooring it could mean that the panels below have weakened. Wet lumber may lead to dimensional changes as the joists dry resulting in nail pops and floor squeaks.

Following the cutline on the subfloor chad used a cat s paw bar to pull all nails that might be hit with the circular saw blade. He snapped a chalk line to connect the layout marks which were centered over a floor joist. This can be a big project you may have to open more floor to insert the new joist move electrical or plumbing runs or raise a sagging floor. Not letting a subfloor dry.

If you ve had a recurring leak your floor joists might be rotted and weakened too. 1 locate the floor joist below the subfloor at each side of the section. Replacing the floor under the bathtub toilet and the sink. Make sure to get all of the damaged or moldy.

He measured and marked out a 4 8 sheet of plywood to replace the damaged subfloor.