Gwinnett County, Georgia
Crawl space structural repair in Lawrenceville typically costs between $2,500 and $8,000. Reliable Solutions Atlanta fixes sagging floors, failing piers, damaged joists, and weakened girders in Gwinnett County homes where decades of moisture and settling fill soil have compromised the floor structure. Free same-week inspections with detailed photo documentation.
Lawrenceville homes built during the Gwinnett County building boom of the 1980s through 2000s are reaching the age where crawl space structural problems become visible. The subdivisions in the 30043 and 30044 zip codes — Sugarloaf, Collins Hill, Archer Ridge, Mallard Landing — were constructed quickly on fill soil that was not always compacted to engineering standards. After 20 to 30 years, this fill has continued to settle, taking the crawl space support piers with it.
When piers settle, the girder beams they support drop. The floor joists spanning between girders follow, and the floor above sags. In a typical Lawrenceville home, you might notice a dip in the center of a room, a ball that rolls to one side on its own, or a door that has started dragging on the floor. These are signs that the support system beneath the floor has shifted.
Moisture compounds the problem. Vented crawl spaces in Gwinnett County homes admit humid air that condenses on the cooler wood structure. Over years, this chronic moisture weakens joists, causes girder connections to loosen, and promotes wood rot at contact points where girders rest on piers. The structural wood loses strength gradually until it can no longer carry the floor load above.
Termite and carpenter ant damage is another common factor in Lawrenceville crawl spaces. The damp wood attracts wood-destroying insects that hollow out joists and girders from the inside. The damage is often invisible from above until the floor noticeably sags or bounces.
When crawl space piers settle or girders weaken, the floor above dips in the middle where the span between supports is longest. This sag worsens over time as the structure continues to lose strength.
Floors that bounce underfoot indicate the joists have lost stiffness from moisture damage, rot, or insect activity. Healthy floor joists are rigid. Bouncy joists have been compromised and need reinforcement.
When the floor system drops unevenly, door frames rack out of square. Interior doors that used to close smoothly start dragging, leaving gaps, or not latching. This tracks directly to crawl space pier settlement.
Separation between the floor surface and the baseboards along walls indicates the floor has dropped while the walls stayed in place. The gap follows the line of the settling section of the floor system.
Diagonal cracks radiating from the corners of door and window frames upstairs are caused by the floor system shifting beneath the wall framing. The wall cannot flex with the movement, so the drywall cracks.
Tile floors in kitchens and bathrooms are rigid and show crawl space movement immediately. Cracked tiles, popped grout, or uneven surfaces that develop over time point to a shifting floor structure beneath.
We remove failed concrete block or wooden piers and replace them with adjustable steel piers on properly poured concrete footings. Steel piers can be precisely adjusted to lift the girder back to level and can be readjusted in the future if any additional settling occurs. For Lawrenceville homes on compacted fill, we size the footings larger than standard to distribute the load across the settling soil.
Damaged floor joists are reinforced by bolting a new piece of treated lumber alongside the existing joist. The new sister joist carries the load that the damaged joist can no longer handle. We use structural screws and construction adhesive to bond the new wood to the existing joist, creating a composite member that is stronger than the original. All new lumber is pressure-treated and borate-treated to resist future moisture and pest damage.
When main girder beams have rotted, split, or been damaged by insects, we either sister them with new treated lumber or replace them entirely. For full replacement, we temporarily support the floor above with jacks, remove the failed girder, install the new beam on new piers, and lower the floor onto the new support. This is the most significant crawl space structural repair and is common in Lawrenceville homes where moisture damage has been unaddressed for years.
After replacing piers and repairing damaged wood, we level the floor system using the adjustable piers. We raise the floor incrementally over several hours to avoid cracking drywall or stressing framing connections. A laser level verifies the floor is within tolerance. Most Lawrenceville floor leveling achieves results within a quarter inch of perfectly level.
| Service | Typical Cost |
|---|---|
| Pier replacement (per pier) | $600 – $1,200 |
| Joist sistering (per joist) | $100 – $200 |
| Girder beam sistering | $1,500 – $3,000 |
| Girder beam full replacement | $2,500 – $5,000 |
| Floor leveling (per room area) | $1,500 – $3,500 |
| Full structural restoration | $5,000 – $12,000 |
Financing available through GreenSky. All structural work includes warranty. We recommend pairing repair with waterproofing or encapsulation to protect the new structure.
Crawl space structural repair in Lawrenceville typically costs between $2,500 and $8,000. Individual pier replacement runs $600 to $1,200 per pier. Joist sistering costs $100 to $200 per joist. Full crawl space structural restoration with multiple pier replacements and beam work ranges from $5,000 to $12,000.
Sagging floors in Lawrenceville homes are caused by failing crawl space support piers. The homes built during the 1980s through 2000s Gwinnett County building boom used concrete block or wooden piers on footings placed on compacted fill soil. After 20 to 30 years, the fill has settled unevenly, causing piers to drop and the floor above to sag.
Joist sistering is attaching a new piece of lumber alongside a damaged floor joist to restore its structural capacity. You need it when joists have been weakened by moisture damage, wood rot, or insect activity. We evaluate each joist during inspection and only sister the ones that have lost significant strength.
Yes. We level floors by replacing failed piers with adjustable steel piers that can be precisely set to the correct height. The floor is raised incrementally to avoid cracking drywall or stressing framing connections. Most Lawrenceville floor leveling projects achieve results within a quarter inch of level across the room.
Most Lawrenceville crawl space repairs take 1 to 3 days. Simple pier replacement or joist sistering is completed in a single day. Comprehensive structural restoration with multiple pier replacements, beam work, and floor leveling takes 2 to 4 days. Your home remains livable throughout.
Seal the crawl space after structural repair to prevent the moisture damage from recurring.
Fix foundation wall and footing issues that contribute to crawl space structural problems.
Stop the water entry that causes the wood rot and pier settling in the first place.
Home / Crawl Space Repair / Lawrenceville
Crawl space repair also available in Marietta, Roswell, Alpharetta, Decatur, Sandy Springs, and Stone Mountain.
We will crawl under your Lawrenceville home, inspect every pier, joist, and girder, take photos, and give you an honest structural assessment with pricing. No obligation, no sales pressure.
BBB A+ Accredited · IICRC Certified · 20+ Years Experience · Financing Available
