Sagging Floor Repair and Support Jacks
A sagging floor usually means a beam or joist has lost support. We install adjustable steel jack posts on concrete pads in the right spots, raise the floor slowly to avoid cracking finishes above and lock it in. The result is a floor that is more level and a structure that is held up properly.
- PartsJack posts, pads, beams
- MethodSlow, careful lifting
- SpacingPlanned for the span
- ResultA more level floor
What is included
- 1A more level floorSag is reduced.
- 2Solid supportPosts on proper footings.
- 3Careful liftSlow to protect finishes above.
- 4AdjustableCan be fine-tuned later.
From the first call to a dry crawl space
Our partner experts repair and protect crawl spaces in cities across the country. Find yours below and ask for a free estimate.
- 1MeasureWe map the sag with a level.
- 2PlacePads and posts are set in position.
- 3LiftThe floor is raised gradually.
- 4LockPosts are set and checked.
Is this the right service for you?
- A home with a visible dip in the floor
- Doors that stick or gaps at baseboards
- A beam with a failed or missing post
- Owners after rot repair
Common questions
How much will the floor rise?
We raise it slowly and only as far as the structure allows. Some sag is permanent.
Will it crack the drywall?
Slow lifting limits that, and we warn you of the risk.
How many jacks do I need?
It depends on span and load. We plan it.
Services that pair with this one
Support Pier InstallationNew concrete piers and steel posts to carry beams and replace failing blocks.See the service 
Floor Joist Repair and SisteringNew lumber fastened alongside a cracked or weakened joist to restore its strength.See the service 
Structural Damage AssessmentSagging floors, soft wood and cracked piers, checked and explained before anyone starts cutting.See the service Find your city
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Call or text, or send the form for your free estimate. Tell us what you notice, from smells and cold floors to water and sagging.