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When Sagging Floors Point to a Crawl Space Support Problem
Sloping, bouncy, or uneven floors can be a sign that the beams and floor joists beneath your home are no longer receiving the support they need. In many homes, the issue is found in the crawl space rather than in the concrete foundation itself.
TerraFirma uses the SmartJack® system as an adjustable crawl space support solution designed to stabilize weakened beams and floor joists. Watch the service spotlight below to see why this system can be an effective part of a crawl space structural repair plan.
SmartJack at a Glance
- Adjustable supplemental crawl space support
- Designed to stabilize beams and floor joists
- Galvanized steel construction
- Can be installed in limited-access crawl spaces
- Compatible with crawl space encapsulation systems
Watch: How SmartJacks Support Sagging Floors
This TerraFirma service spotlight explains how crawl space support posts can help address sagging or sloping floors when weakened structural support is contributing to the problem.
Why Crawl Space Supports Can Weaken
Crawl space framing depends on properly supported beams and joists. When support posts shift, settle, deteriorate, or no longer provide adequate support, the floors above can begin to sag or feel springy.
Settling Supports
Weak or changing soils beneath existing posts can allow support points to settle and contribute to uneven floors above.
Weakened Framing
Undersized beams, excessive spans, moisture damage, or aging structural components can reduce the support available to floor joists.
Shifting Wood Posts
Traditional wood posts can move or deteriorate over time, leaving beams and joists without the consistent support they need.
How the SmartJack System Works
Every home requires an individual evaluation, but the SmartJack system is designed around a straightforward goal: create a stable support point beneath the crawl space framing and transfer loads through adjustable steel posts.
Step 01
Evaluate the Framing
The crawl space structure is inspected to identify where beams or joists need additional support.
Step 02
Create a Stable Base
The support location is prepared so the SmartJack can transfer structural loads to a stable footing.
Step 03
Install Steel Supports
Galvanized steel columns are cut to fit and secured beneath the existing girder or a supplemental beam.
Step 04
Adjust the System
The adjustable top brackets allow the supports to stabilize the framing and, when conditions permit, help move sagging floors toward their original position.
Signs Your Crawl Space May Need Structural Support
- Sagging or sloping floors
- Bouncy or springy areas underfoot
- Interior drywall cracks near doors or openings
- Doors that appear out of level
- Visible movement or deterioration in crawl space supports
- Beams or floor joists that appear to be sagging
These symptoms can have more than one cause. A professional evaluation can determine whether crawl space framing, support posts, foundation movement, moisture damage, or another condition is contributing to the problem.
Explore TerraFirma Crawl Space Repair Solutions
SmartJacks are one part of TerraFirma’s broader approach to crawl space repair. Learn more about crawl space solutions, including structural support, moisture control, and encapsulation options for homes in Oregon, Washington, and Idaho.
SmartJack Homeowner Questions
What is a SmartJack?
A SmartJack is an adjustable galvanized-steel crawl space support post designed to stabilize beams and floor joists that are no longer receiving adequate support.
Can SmartJacks help lift sagging floors?
SmartJacks are adjustable and can often help move sagging beams and floor joists toward their original position. The amount of correction that is appropriate depends on the structure and the conditions found during the evaluation.
What causes floors above a crawl space to sag?
Possible causes include settling support posts, weak soils, undersized beams, excessive joist spans, moisture-related damage, or deterioration of existing wood supports. An inspection is needed to identify the actual cause.
Are SmartJacks adjustable after installation?
Yes. The system uses adjustable top brackets and threaded components, allowing the supports to be adjusted when future service or structural conditions require it.
Can SmartJacks be installed with crawl space encapsulation?
Yes. TerraFirma notes that the SmartJack system is compatible with crawl space encapsulation, allowing structural support and moisture-control improvements to be coordinated when both are needed.
When should sagging floors be inspected?
If floors are noticeably sloping, bouncy, or getting worse over time, an evaluation can help determine whether the issue is related to crawl space supports, framing, moisture damage, foundation movement, or another condition.
