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Structural Wood Repair · Davenport, IA
Sagging Floor & Wood Repair in Davenport
Sagging, sloping, or bouncy floors in Davenport usually mean a failed joist, beam, or support below. We find the real cause and fix it for good.
Why It Sags
Why Davenport Floors Sag — and How We Fix Them
In Davenport’s older homes a sloping or bouncy floor is almost always structural: a joist has rotted, a beam is undersized, a sill plate has deteriorated, or a support post has settled into clay soil. Jacking the floor without fixing the cause just delays the problem. We diagnose what actually failed and repair the structure so the floor stays level for good.
What We Do
What We Repair Below the Floor
Floor Joist Repair & Sistering
Reinforcing or “sistering” cracked, sagging, or undersized joists, and replacing those that are too far gone.
Beam & Girder Replacement
Replacing failing main beams and girders, and adding properly sized support where the original was undersized.
Sill Plate & Rot Repair
Cutting out water-damaged sill plates and rotted framing and rebuilding with treated, properly flashed material.
Support Posts & Jacks
Adding or replacing support posts and adjustable columns on proper footings to carry the load and re-level the floor.
Root Cause
Often It Starts With Water
Our Philosophy
A surprising amount of structural wood damage traces back to moisture — a wet crawl space, poor drainage, or a foundation leak quietly rotting the wood above it. We look for that root cause so the new framing doesn’t end up failing the same way. Sometimes the real fix is drainage or waterproofing →
— Behncke Construction · since 1948
Floors sloping or bouncing?
We’ll get under the floor, find what’s actually failing, and recommend the repair that fixes it for good — with a written estimate, usually within one business day.
Related Pages
Replacing rotted wood is easy — finding why it rotted is the job
When a beam or joist is rotted or sagging, swapping the wood is the easy part. If you don’t fix why it rotted — usually a leak, poor drainage, or no ventilation — the new wood rots too. We find the source first, or you’ll be paying us again in a few years.
— The Behncke crew
Your next step
“My floor is sagging — what’s really wrong?”
Start with the cause, not the symptom:
- Wood & floor repair — how we diagnose what’s actually failing
- Fix the drainage first — the moisture source behind most rot
Real customers · real reviews
What Quad Cities homeowners say
“We had our basement joists replaced. Reasonable quote, booked in a timely manner, great communication with expectations and the contract. We could park a semi on our new floors. The owner was a doll.”
“Kyle came out and did a very thorough job of looking for possible cracks in the foundation, digging down to see below surface line — and informed us he didn’t see any obvious cracks.”