How To Jack Up Floor From Crawl Space

Keep an eye on the girder so that it does not get out of position and try to roll.

How to jack up floor from crawl space.

Posts set on dirt floors should be upgraded to concrete pads with footings. Adjust the screw jack so that the top and bottom plates are flush to the wood surfaces above and below. Deteriorating floor joists posts or beams can be caused by termite infestation water damage or dry rot. Once the floor is at the right level jack it up just a little bit higher.

The best way to permanently solve sagging bouncy floor problems is to install smartjack posts beneath the beam that supports your crawl space joists. Underneath the floor in a crawl space or basement position the floor jack or jacks and place the beam in position. Slowly jack up the floor. Drive 16 penny nails through the holes in the plates and into the wood framing.

Lower the hydraulic jack to transfer the floor load to the new screw jack. To check joists and diagnose the problem a pro must pull up the flooring and the subfloor to see what shape they re in. Checking joists is easier if you have a basement or crawl space foundation because the joists are exposed. Jacking must proceed slowly.

In this style framing the entire structure will sag in that area usually causing cracks in walls ceilings or doors rubbing their frame you will need a proper footing under the post jack because your lifting much more weight if your correcting a sagging interior floor in ether style framing locate the main support beam in that area the large beam that the floor joist are sitting on raise that area keep in mind if its drastic have the foundation evaluated. Place wood posts on metal post supports to create a waterproof barrier between the post and the footing. When this happens stop hoisting the jack and lock it in place. Tiger brand adjustable floor jack model js 15 15 gauge floor jacks telescoping jack for temporary support size range 1 1 3 4 4 out of 5 stars 368 19 67 19.

Center the screw jack below the girder and on top of the wood block on the concrete pier. Block under each one until there is just enough room to fit the girder between the jacks and the joists. Each smartjack post rests on a precast concrete pad that is set on a base of compacted stone. Use a string to watch the floor come up.

Carefully hoist the jack until the beam reaches the floor underneath.