Trenton Foundation Repair
Trenton & Mercer County, NJ
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Crawl space repair Free inspections

Crawl space repair & encapsulation in Trenton, NJ

Bouncy floors and a musty draft usually start in the crawl space. We shore up the framing underneath, seal the space against moisture, and dry it out so the floors above firm back up and the air upstairs improves.

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Support & encapsulation Warranty in writing
What's happening down there

Damp air and tired supports.

A crawl space is dark, low, and easy to ignore until the floors above it start to feel it. Ground moisture and humid summer air soak into the wood, the posts and beams that carry the floor lose their footing, and the framing softens. That's the bounce and the slope you feel walking across the room.

We fix it in two parts. First we put proper support back under the floor — adjustable jacks and beams set on solid footings — to take out the sag. Then we seal the space against moisture with a vapor barrier or full encapsulation, so it stays dry, stops feeding humidity into the house, and doesn't undo the repair.

Support jacksBeam & joist repairVapor barrierEncapsulationDehumidifier
Signs the crawl space needs work
  • Floors that bounce, dip, or slope over the crawl space
  • A musty, damp smell drifting up into the house
  • Humidity you can feel, or condensation on ductwork
  • Insulation that's fallen or hangs down, wet and heavy
  • Standing water or damp soil after it rains
What's included

Hold it up, then dry it out

Floor supportAdjustable steel jacks and beams set on solid footings to take the sag out and stiffen the floor above.
Framing repairReplacing or sistering beams and joists that moisture has weakened, so the fix has something sound to sit on.
Vapor barrier & encapsulationA heavy liner over the ground and walls that seals out moisture and cleans up the space for good.
Moisture controlA crawl space dehumidifier or drainage where it's needed to keep humidity down and hold the repair.
Good to know

Crawl space questions

What is crawl space encapsulation?
Encapsulation seals the crawl space off from the damp ground and outside air with a heavy liner over the floor and walls, usually paired with a dehumidifier. It keeps moisture out so the wood framing stays dry and the space stops feeding humidity into the house above.
Will fixing the crawl space firm up my floors?
If the bounce comes from failing supports or moisture-weakened framing under the floor, then yes — adding proper support jacks and beams takes the sag out and stiffens the floor above. We check what's actually causing the movement before we quote it.
Vented or sealed crawl space — which is better?
In our humid summers, open vents often let damp air in rather than drying the space out. A sealed and encapsulated crawl space usually stays drier and more stable. We'll look at how yours is built and tell you what makes sense for your home.
Is the work guaranteed?
Yes. Crawl space repairs and encapsulation come with a written warranty, and we go through the terms with your estimate.
Related services

Other foundation work we handle

Settlement & piering

When the whole footing under a wing is sinking.

See details

Waterproofing

Stop the moisture at its source.

See details

Sump & drainage

Move water away from a wet crawl space.

See details
Get under the floor

Have your crawl space looked at, free.

We'll check the supports and the moisture, and lay out what it takes to firm up the floors — in writing.

(609) 596-1420
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