Replacing Floor Joists With Concrete

Steel floor joists are less likely to expand and contract so they won t warp or.

Replacing floor joists with concrete.

Moisture and pest infestation can damage subfloor. Once in place alongside the broken joist glue and screw the new joist to the old broken one. Set a hydraulic jack and post under the beam and jack up the joists about 1 8 in. Homes with floor joists need a base to provide a surface on which to lay carpet ceramic tile hardwood laminate and or vinyl.

A subfloor provides stability and a level surface. This part of. Then use pry bars and your reciprocating saw to pry and cut the floor joist away from the subfloor. Replacing old unstable wood floor with reinforced concrete floor this project is about an old tobacco warehouse converted into a luxury hotel.

Jacking them up too fast may cause cracks in the walls and floors overhead. I made a fast and simple jack post with two 2 4 screwed together. They are usually made of concrete steel or wood. It is a 1920 s.

A day until they re level. Making a jack post. They help support main floors above the crawlspace. Freddiemercurystwin 5 jun 2012 7.

If the new joist is hitting a beam and the floor above and jacking is not an option an alternative approach is to cut small bevels on the two opposing edges that the touch the beam and floor board. Tack a beam under the sagging joists. Homes built on a slab foundation may not require them as many types of flooring can lay directly on top of the concrete. Pry the floor joist from the subfloor with the back of your hammer.

Screw the subfloor material down to the new joist and say goodbye to that bounce and squeak. If you have moisture in your crawlspace wooden beams are more susceptible to water damage and could encounter serious issues such as expansion and contraction. Nailing two 2x4s together will work to span about three joists unless the sag is under a weight bearing wall. Short videos and slideshow documenting our attempt at replacing rotten joists and flooring in a kitchen of a house we are currently renovating.

Assuming your joists are sound and ventilation to the void is adequate ripping up your timber floor and replacing with concrete is a complete waste of time and money and you will not end up with a warmer floor than just insulating between the joists. This will create a weak spot. When replacing rotted floor joists it s important to be sure the girder and sill are still intact.