Cut Floor Joist High Spot

We considered it but we just weren t going to do that.

Cut floor joist high spot.

What we found is that one technique is to pull up the subfloor and shave down the top of the joist. The joist underneath the hump may appear thicker than the joist on either side of it because of moisture. Sometimes joists are notched at the end where they bear on a wall or sill. The most basic method is to take a piece of tar paper fold it in half and then push that.

A floor joist will bow upward creating a heaved area on the floor above. Essentially a hump on the floor was created by the excessively crowning joist. Tradespeople often need to cut notches or holes in floor and ceiling joists to run pipes ductwork or wires. Start by cutting out a small 1 2 in 2 5 5 1 cm section of the floor joist with a reciprocating saw.

Shear is what would cause the joist to break in half and the floor to collapse an unlikely outcome unless the joist is extremely overspanned overloaded or heavily modified. Step 2 look at the joist. Cut only the area where the hump is not the entire floor. To address this unique area of the floor we decided to remove the existing 5 8 inch osb plane the joist using a standard handheld planer and install.

Jack it up and sister join another joist to the original one. I noticed the high joist when i removed the old carpet. Use a circular saw to remove the subfloor to expose the high joist. This will create a weak spot.

If the cut outs are too large or in the wrong location the joist can be weakened and unable to support the load it was designed for. To remove the existing floor use a circular saw. Fixing a low joist is pretty straight forward. A high joist is a different conundrum.

It s a sign of a high spot. I pulled all the nails first then cut the path the nails were on with a saw set to depth of the subfloor. High areas in the floor are called heaves and low areas are called dips. I cut out a span of plywood over 3 joists total the high one in the center planed it down with my electric planer and was able to reset the same subfloor i cut out.

The joist on the other side of the crowned joist was properly level meaning it was in plane with the end joist. Pry the floor joist from the subfloor with the back of your hammer. Minor high spots for hardwood and laminate floor installations are easily fixed with tar paper shims.