Stand at your garage door and look at the weatherstrip. If daylight shows under one corner, or the door seals on the left but not the right, the slab has moved. Garage floors in Broomfield don't wear out from use. They lose the ground underneath them, and the two usual thieves here are uncompacted fill and a climate that dries the soil from the edges in.
The gap under the door didn't cut itself
A garage slab is poured inside the foundation stem walls, floating on whatever fill the builder placed. When that fill settles or shrinks, the slab follows it down while the walls stay put. You see the result as a widening gap at the door, a crack across the middle of the floor with one side lower than the other, or shelving that leans away from the wall it's bolted to.
Signs worth a phone call:
- A crack across the slab where one side sits lower than the other
- The garage door seals unevenly or a new gap has opened at a corner
- A hollow sound when you knock on the concrete near the apron
- Water tracking to one corner that used to drain out the door
Any one of these on its own is worth a look. Two together usually means the settlement is still moving, and a slab caught mid-slide is cheaper to correct than one that's finished dropping.
The era problem: how Broomfield garages were built
This city-county holds every construction era from 1960s Broomfield Heights to 2000s Anthem, and garage settlement tracks those eras closely. In the older neighborhoods, the fill under the slab often went in with minimal compaction, then spent sixty years slowly consolidating. In the newer ones, big grading operations moved a lot of soil fast, and garages sitting on the deeper fill sections settle in their first decade or two. Either way the fix is the same: we pump slurry through 1-1/2" holes, fill the loose zones, and bring the slab back up. Mudjacking handles up to 12 inches of settlement, which covers nearly every garage we see.
How a slab that never sees rain still loses its soil
People are surprised a covered slab settles at all. Two routes. First, Broomfield's wind-dried summers pull moisture out of the clay through the apron edge and the open door side, and clay that dries is clay that shrinks. Second, water gets under the apron from the driveway side during spring melt and freeze-thaw season, then erodes the base back under the garage. The slab is protected from weather on top and completely exposed to it underneath.
A hose bib or a slow irrigation leak along the garage wall does the same work faster. If we suspect water is the driver rather than old fill, we'll say so at the estimate, because a lift over an active leak means the void comes back and neither of us wants that return visit on anybody's dime.
Cost, precision, and what to expect on the day
Garage floor lifts are priced by slab size and how far the floor has to travel, quoted free and in person. We check the floor after every pump and stop when it reads level. You'll need to clear the floor, and if the garage is packed we can lift in two passes so you only shuffle things once to each side. Trevor will tell you at the estimate when you can walk on it and when the car can come back in.
One sequencing tip we give every caller: if you're planning an epoxy or polyaspartic coating, level first. Coating a settled slab locks the crack pattern in and makes a later lift messier. There's a short homeowner check on our garage floor low-spot guide if you want to diagnose before you call.
Free estimate, straight answer
Trevor walks every garage himself before we quote it. He'll tap the slab, find where the support went, and tell you whether it's a lift, a void fill, or in the rare severe case a replacement. Settlement past 12 inches starts to involve the wall connection, and at that point honest advice beats a pump truck. The estimate costs nothing either way. Call (303) 526-2222 or read more about the method on our garage floor leveling page.