Structural & Subfloor Repairs
Safe, Solid Floors Start from the Ground Up

At Markone Contractors, we specialize in structural flooring repairs, including joist repair, subfloor replacement, and reinforcement services. While most people focus on the surface of their floors, the true strength of your home lies underneath. If your floors feel soft, sagging, uneven, or squeaky, the problem often starts below the surface. We’ve been repairing and installing floors since 2017, and we understand how critical a solid structural foundation is to the safety and longevity of your home.
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Common Structural Flooring Problems
Over time, flooring systems can develop serious structural issues due to moisture, age, improper installation, or pest damage. Some of the most common problems we repair include:
Sagging or Uneven Floors: Floors that dip, slope, or feel uneven often indicate weakened or damaged joists beneath the subfloor.
Rotting Subfloors: Water damage from leaks, plumbing failures, or high humidity can cause subfloors to rot, weaken, and deteriorate.
Bouncy or Spongy Floors: If your floor feels soft or unstable when you walk across it, the subfloor may be compromised or improperly supported.
Squeaky Floors: Persistent squeaking can signal loose subfloor panels or shifting framing members.
Cracked or Popping Tiles: When subfloors flex due to structural weakness, rigid flooring materials like tile can crack or lift.
Termite or Pest Damage: Wood-destroying insects can compromise joists and subflooring, weakening the entire flooring system.
What Happens If Structural Flooring Problems Aren’t Repaired?
Ignoring structural flooring issues can lead to more serious — and more expensive — damage over time:
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Worsening sagging and structural instability
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Increased risk of floor collapse in extreme cases
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Mold growth from hidden moisture damage
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Damage to finished flooring materials (hardwood, tile, laminate, etc.)
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Reduced home value and failed inspections during resale
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Safety hazards for your family or customers
What starts as a small soft spot can quickly turn into a major structural concern. Addressing the issue early saves money and prevents larger repairs down the road.
Our Structural Flooring Repair Services
At Markone Contractors, we provide comprehensive structural flooring solutions, including:
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Joist repair and reinforcement
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Sistering damaged joists
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Subfloor removal and replacement
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Structural framing repairs
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Floor leveling and stabilization
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Moisture-damaged wood replacement
We carefully assess the root cause of the problem — not just the surface symptoms — to ensure your flooring system is fully restored and properly supported.
Why Choose Markone Contractors for Subfloor & Joist Repairs?
- Experience You Can Trust: We’ve been repairing and installing floors since 2017. Our hands-on experience means we understand both the structural components and the finished flooring systems above them.
- Complete Flooring Expertise: Unlike general contractors, we specialize in flooring systems from the joists up. That means we can repair the structure and properly reinstall your finished flooring for a seamless result.
- Long-Term Solutions: We don’t believe in temporary patches. We identify the source of the problem — moisture, poor installation, structural failure — and fix it correctly the first time.
- Honest Assessments: If your floors don’t need full replacement, we’ll tell you. Our goal is to provide the right solution, not oversell unnecessary services.
- Protect Your Investment: Your flooring is one of the largest surfaces in your home. Protect it by making sure the structure underneath is strong, stable, and secure.
Signs You May Need Structural Flooring Repair
Call Markone Contractors if you notice:
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Soft or spongy spots in your floor
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Floors that slope or sag
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Gaps between the flooring and baseboards
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Cracked tile or separating hardwood
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Excessive squeaking
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Water damage near kitchens, bathrooms, or laundry rooms
Early intervention can prevent costly structural repairs later.
Restore the Strength Beneath Your Floors
Your floors should feel solid, stable, and safe. If you’re experiencing structural flooring issues, don’t wait for the damage to spread.
Contact Markone Contractors today to schedule an inspection and get your flooring system repaired the right way. With professional structural repairs and decades of experience since 2017, we’ll make sure your floors are built on a foundation you can trust.

