If your floors sag, bounce, or slope, the fix isn't a new floor — it's what's holding it up. We install adjustable steel support jacks on concrete footings, sister rotted joists, and replace failing girders where they've given out.
A licensed local crew — usually out in 24 to 72 hours. Written scope, fixed price, no pressure.
Structural support work in Harrisburg is not the biggest slice of my calendar but it is the highest-stakes and it splits cleanly into two eras of housing. On the 90s and early 2000s Skybrook, Wynfield, and Hampton Ridge subdivision stock, the problem is almost always a 20-year settlement pattern — interior CMU piers that were built on concrete pads that met code on paper in 1996 but were set on partially-compacted red clay backfill, and the pads have settled a half inch or more into the subgrade over two decades of freeze-thaw cycles. The girder above the settled pier has sagged. The joists coming off the girder have started to tilt. Doors on the floor above stick in one season and clear in the next. That is not a house falling down — it is a slow multi-decade drift that has finally shown up as functional symptoms upstairs.
On the pre-1990s stock in old Downtown Harrisburg along Main St and on the older stretches of Rocky River Rd and Robinson Church Rd toward the Concord line, the structural work is a different animal. Those are 24 to 30 inches of hand-dug crawl, unmortared dry-laid brick piers on 90-year-old dirt pads that have settled unevenly over generations, and joist systems that have taken decades of vented humidity and slow water damage. Some of them have piers that have partially collapsed. Some have joists that are structurally soft across substantial spans. Some need a licensed structural engineer to lay out a repair plan before I can even file a Cabarrus County permit. Those are one-off scopes, one house at a time, and the timeline is measured in weeks rather than days.
Last November I ran a structural job in Skybrook off Roberta Rd — 1998 two-story, 3,600 SF, second-owner who had bought the house in 2015. The owner called because a bedroom door upstairs had stopped closing over the previous summer and a hairline crack had opened above the hallway doorway on the same floor. Both are classic upstairs symptoms of interior pier settlement in the crawl below. Under the house I found what I expected — the central east-west girder had lost about 3/8 of an inch at the third interior pier over the previous decade, the CMU pier was sitting on a poured concrete pad that had settled maybe a half inch into the Cabarrus County red clay, and the girder itself was double 2-by-10 with a nailed splice joint just past the settled pier that had opened up about an eighth of an inch. The joists coming off the girder were tilting about 1 degree off level toward the settled side. Doors upstairs were the visible symptom. Scope was pier replacement with a Grip-Tite adjustable steel post on a new 24-by-24-by-12-inch poured pad on undisturbed soil, girder sistering with pressure-treated 2-by-10 across the affected span, and slow shim-up of the sag over five days of quarter-inch daily lifts to bring the floor system back to level without cracking the drywall upstairs.
Free on-site inspection. I probe every girder with a screwdriver along its length looking for soft cross-section, I map every pier for plumb and settlement, and I check for pad condition where I can see it. If your scope is straightforward Skybrook subdivision pier and girder work, we can typically do it under a Cabarrus County residential structural permit without engineered calcs. If your scope is a pre-1990s Downtown Harrisburg brick-pier house or involves substantive load path changes, I bring in a structural engineer for the design and Cabarrus County will want to see engineered calcs on the permit application. I flag which category you are in on the inspection.
A standard Skybrook pier-and-girder structural job runs three to five days on site depending on how many piers need work and how much girder sistering is in scope. Day one is shore and stabilize. Two crew set up temporary Tiger SmartJack or Grip-Tite adjustable posts on 12-by-12 cribbing plates at three or four points along the affected girder run, taking the load off the settled interior piers slowly with a 12-ton bottle jack rather than trying to force elevation back to level in one shot. Slow load transfer is the whole game — a Skybrook floor system that has been sitting a half inch low for a decade will crack drywall upstairs if you lift it more than a quarter inch per 24 hours. We shim tight as we go, but we do not force elevation on day one. Day two is pier work. On a settled-pad Skybrook situation the fix is either resetting the existing CMU pier on a new poured pad or replacing the pier entirely with a Grip-Tite adjustable steel post on a new pad. Steel post is my default on 90s subdivision jobs because it gives you future adjustability if the pad settles again in year 25 and because it eliminates the mortar joints in a stack of CMU that were the original weak point.
Pad excavation is hand work in a 38-inch Skybrook crawl. No mini-excavator, no equipment access — just two crew with shovels and buckets moving Cabarrus County red clay from a 24-by-24-inch hole down to 12 inches minimum below the previous pad depth, all the way to undisturbed subsoil. Cabarrus County inspectors are strict on this — they will fail an inspection if the new pad is on backfill or on the disturbed layer where the previous pad was sitting. I dig deeper than 12 inches on every reset just to have margin. Once the hole is excavated I pour a 24-by-24-by-12-inch pad with a 3,500 PSI mix, two courses of #4 rebar in a grid, and let it cure 48 hours minimum before setting the steel post on top. Day three is girder work if that is in scope — sistering with pressure-treated 2-by-10 the full length of the affected span, bolted through the original girder with 3/8-inch by 5-inch lag screws every 16 inches with a washer under the head. Day four and five are slow lift and shim-up on the temporary shores to bring the floor back to level over the course of two to three days at a quarter inch per 24 hours.
Cabarrus County permits are pulled through the Cabarrus County Building Inspections office in downtown Concord, not through the Harrisburg town hall. Any structural work — pier reset, pier replacement, girder sistering, joist replacement, or load path change — requires a residential structural permit, and turnaround out here is a week to ten business days for the plan review. I file everything and coordinate the inspection. Cabarrus County inspectors are reasonable and straightforward as long as the scope on the permit matches what is actually installed. One failed inspection in ten years and it was a labeling issue on a subpanel — never a structural fail. On the pre-1990s Downtown Harrisburg brick-pier stock I sometimes bring in a licensed structural engineer for the initial evaluation because the load paths on a 1920s dry-laid pier house are not textbook and Cabarrus County will want to see engineered calcs on any substantive repair. That adds a week and a line item, and I flag it on the inspection.
Adjustable steel posts for Skybrook and Wynfield pier replacement are Grip-Tite as the default and Tiger Foundation SmartJack as the lower-profile alternative for jobs with tight clearance. Grip-Tite has a heavier-duty adjustment mechanism than residential-grade screw jacks from the big box stores, and the base plate is engineered for load transfer to a proper poured pad. Both go on a new 24-by-24-by-12-inch pad, 3,500 PSI concrete mix, two courses of #4 rebar in a grid, poured on undisturbed subsoil dug to 12 inches minimum below the previous pad depth. Cure time is 48 hours minimum before load transfer.
Girder sistering material is pressure-treated 2-by-10 southern yellow pine, .40 CCA or ACQ retention, bolted through the original girder with 3/8-inch by 5-inch lag screws every 16 inches with a washer under the head. On the rare Skybrook or Wynfield job where the original girder is 2-by-8 and the load calc says we need to upsize, we go LVL — 1.75-by-9.25 LVL through-bolted the same way. LVL availability out of the Concord lumber suppliers is inconsistent so I plan around it on tight schedules.
Joist repair material matches the original framing depth. 2-by-10 or 2-by-8 pressure-treated southern yellow pine sistered full-length against the affected joist, bolted with the same 3/8-inch lag pattern. Rim joist sistering uses pressure-treated 2-by material matched to the original rim depth. All fasteners are hot-dipped galvanized or stainless — bright fasteners do not survive Cabarrus County crawl humidity even after encapsulation.
Temporary shoring during pier work uses Tiger SmartJack or Grip-Tite adjustable posts on 12-by-12 southern yellow pine cribbing plates, 12-ton bottle jack on the crib for load transfer, wooden shim wedges for tight-fit adjustment as elevation comes back to level. Slow-lift protocol is quarter inch per 24-hour period until target elevation, monitored with a laser reference or two-foot spirit level at each pier location. Load transfer never rushed.
Concrete for pad pours is bagged Quikrete 5000 or Sakrete Maximizer mixed on site in a wheelbarrow because a 24-by-24-by-12-inch pad is small enough to hand-mix and get placed in a couple of hours per pad. Ready-mix truck delivery is not economical for one or two pads in a Skybrook crawl. Rebar is #4 grade 60 cut to length on site with a bolt cutter.
Yes — Harrisburg is a regular structural support route. Free on-site inspection anywhere in Harrisburg, fixed written quote before we touch anything.
Structural support work in Harrisburg is split between straightforward 20-year pier-settlement retrofits on 90s Skybrook and Wynfield subdivision girders and complex brick-pier stabilization on the pre-1930s Downtown Harrisburg stock along Main St — a wider scope range than typical Charlotte-metro tract subdivisions where subdivision-era construction dominates.
28075. All Cabarrus County addresses covered.
Very likely. Doors that stick in one season and clear in another are usually a seasonal humidity swelling issue that does not indicate structural problems. Doors that stopped closing entirely and have not resolved as the seasons changed are usually structural — the door frame has racked out of square because the floor system below has shifted, and the floor system has shifted because something structural in the crawl gave way. On a 20-year-old Skybrook or Wynfield house the most common cause is interior pier settlement — a CMU pier that sat on a concrete pad that has settled a half inch into the Cabarrus County red clay backfill. The girder above the settled pier has sagged, the joists coming off the girder have tilted a degree or so, and the doors upstairs at the affected wall line stopped closing. Free on-site inspection will confirm or rule out the pattern. If it is pier settlement, the fix is real structural work but it is a manageable scope.
Almost certainly needs an engineer, and I do not run a pre-1930s Downtown Harrisburg pier job without one. The load paths on a 1920s brick-pier house are not textbook — the piers were dry-laid without mortar in most cases, the joist bays were framed with rough-sawn dimensional lumber that does not match modern span tables, and the load distribution across the pier field depends on the specific configuration of that specific house. Cabarrus County will not issue a structural permit on a substantive repair to a pre-1930s house without engineered calcs, and they are right to require them because a wrong load path change can shift stress to a pier that was not designed to hold it and take a wall down. Two structural engineers in the Concord area do quick-turn residential work for me and can spec a repair in a week to ten days. I flag it on the inspection and price the engineering as a line item so nothing is a surprise.
Slow. On a floor system that has been sitting a half inch low for a decade, we lift a quarter inch per 24-hour period until we hit target elevation. That is not because the equipment cannot move faster — a 12-ton bottle jack could snap the floor back in five minutes — it is because the drywall upstairs and the joint work in the finished areas cannot handle a fast lift without cracking. A slow lift over three to five days lets the whole floor system move together and lets the finished materials upstairs adjust without cracking. On a 1/2-inch total lift that is a two-to-three-day slow-lift period after the pier work is complete. Homeowners who want the whole thing done in one day inevitably end up paying for drywall repair upstairs. Slow is cheaper in the end.
Better, actually, for the specific problem we are solving on 90s Skybrook and Wynfield jobs. A Grip-Tite adjustable steel post has three advantages over a rebuilt CMU pier. First, no mortar joints — the mortar joints in a stack of block are the original weak point in a 90s Skybrook pier and are what fail as the pad settles and shifts loads laterally on the stack. Steel eliminates that failure mode entirely. Second, future adjustability — if the new pad settles again in year 25, we can adjust the post by turning the collar rather than tearing out and rebuilding a CMU stack. Third, faster install — a steel post sets on the cured pad in an hour, versus a full day of masonry work to lay up a new CMU pier. Cost is comparable when you include labor. On every 90s Skybrook or Wynfield pier replacement I have run since 2019 I have used steel posts, and I would recommend the same for any Cabarrus County subdivision job in that era.
Free on-site Harrisburg inspection. Fixed written quote. Call (980) 227-1769 or book below.