Garage floor concrete in Anchorage AK - a floor that sets up right in the cold
Cracked, sunken or dusty garage floor? We pour a new slab and protect it from the cold until it's ready for your car.
- Owner on every pour I look at your garage, write the estimate and work the pour.
- Base dug out, not raked We dig out soft dirt and pack the base before pouring.
- Exhaust kept off the slab Heater and engine exhaust stays away from the fresh concrete.
- Garage kept warm We keep the space warm enough for the slab to set up.

- Fully licensed and insured.
- Free on-site estimates.
- We reply within 1 business day.
How do you know your garage floor needs replacing?
A garage floor gives warning before it fails, and catching it early usually means a simpler job and fewer surprises once the old slab is open.
Cracks that keep widening
Hairline cracks are one thing. Cracks that keep opening, or split the floor into separate pieces, usually mean the ground underneath moved, and they let water and salt in.
A floor that sinks or tilts
One section sits lower than the rest, or the floor dips by the door. That usually means the dirt underneath settled, and it gets worse until the base is fixed.
Dusty, powdery surface
The top wears off as gray dust you track into the house. Usually the surface was weak from the start, and sealing over it rarely holds for long.
Chipping and flaking near the door
The surface flakes off in patches, often near the door where snow and road salt melt off the car. Once it starts, each winter takes more of the floor.
Floor pulling away from the walls
The slab has pulled away from the foundation wall or dropped below it. That gap usually comes from settling and lets cold air, water and critters into the garage.
Patches that won't stay put
You've filled the same cracks or holes more than once and they keep coming back. When patches fail like that, the problem is usually under the slab, not on top.
What goes into our garage floor concrete work
I start by looking at the old floor and what's under it, because a garage slab is only as good as its subgrade, the ground it sits on. We break out and haul off the old concrete, dig out soft dirt instead of raking it level, pack a solid base and set rebar, the steel that keeps the slab tied together if it cracks. Home slabs here run four to six inches thick, and a garage floor belongs on the thick end because it carries your car. After the pour and the finish, we cut control joints, shallow grooves that give the slab a place to crack where you won't notice. Then we keep heater and engine exhaust away from the fresh concrete, since fumes on a slab less than a day old can leave a dusty, powdery top, and we keep the garage warm enough for it to set up right. The base is the part nobody sees on day one and the first place people try to save money, so if yours needs more work I'll say so and put the money there before any fancy finish. Price mostly moves with the garage's size, whether the old floor comes out and how much steel goes in, and the schedule moves with the weather and any permit, so your written estimate lays out both for your garage.
If you want the floor to look like more than plain gray concrete, we can plan decorative concrete finishes before the pour, when they're easiest to work in. On a sloped lot where the ground beside the garage or driveway needs holding back, we also build concrete retaining walls, and it's simpler to plan them together than one after the other.
What happens after you call about your garage floor?
From your first call to the walk-through, here's how a garage floor job runs with us and who handles each part.
Call or send the form
You reach us by phone or the form, and I come out to see the garage, check the old floor and ask how you use it.
Get a written estimate
I write up the tear-out, the base and the new slab so you have the whole job on paper before you decide anything.
Pour on the right day
Once you say go, we line up any permits and set a pour date with the weather in mind. If the week looks wrong, we wait.
Walk the floor together
We clean up and walk the floor with you. I tell you when it's fine to walk on and when the car can come back in.
Why Anchorage homeowners call Monolith Anchorage Concrete Company

The owner on your job
I look at every job, write the estimate and work the pour, so nothing gets lost in a handoff.

In business since 2013
Concrete is hard to undo, so I'd rather spend more where it counts than come back to a slab that failed.

Licensed and insured, every job
We're fully licensed and insured, so you aren't carrying the risk of having our crew in your garage.

Planned for Anchorage winters
We plan every slab around the cold here from the start, so a cold snap moves the date, not the result. Call (907) 206-3358.
Get a written estimate for your garage floor
Tell us your garage's size in square feet, whether the old slab comes out and when you'd like the pour. We reply within one business day, and I come out to give you a free written estimate with no obligation.
Garage floors and other slabs
Look through these examples of garage floors and concrete work to get a feel for finishes and layouts before we talk about yours.
Garage floor questions we hear
These are the questions Anchorage homeowners ask most about garage floors. If yours isn't here, call or send the form and I'll answer it for your garage.
How much does a new garage floor cost in Anchorage?
One Anchorage cost guide puts a concrete slab at about $7 to $14 per square foot. That figure is for the slab itself, so tearing out an old floor first gets added on top. I'll measure your garage and put your number in writing.
Can you pour a garage floor in cold weather in Anchorage?
Yes, as long as the slab is protected while it gains strength. National concrete guidance treats it as cold-weather work whenever the air falls, or is expected to fall, below 40°F during that protection period, because a single freeze can damage new concrete. Most well-proportioned mixes get past that risk in about 48 hours at 50°F, so the first two days are the ones we guard most closely.
How long before I can park on a new concrete garage floor?
Plan to park somewhere else for about a week. A new slab should be fine to walk on within 48 hours, and waiting a week before the weight of a car is the safer call. The concrete keeps curing, slowly hardening to full strength, for about a month, though everyday use is fine well before then.
Does a garage floor need a permit in Anchorage?
Inside the Municipality of Anchorage's Building Safety Service Area, building, altering or repairing a building or structure needs a permit from the building official unless the code specifically exempts the work. Outside that area, the city requires land use permits for new buildings, additions and changes in how a structure is used, so a floor that's part of a new garage falls under those rules, and for a replacement floor we confirm with the city before the pour. When a permit is needed, we handle the paperwork with the Municipality where we're able to, and if any part has to come from you, I'll tell you who and what they'll want.
What causes a concrete garage floor to crack?
Usually it's ground that settled, a base that was raked instead of packed, or control joints cut late or skipped. National slab guidance says some cracking is normal on every slab, even one designed and built right, so a crack alone doesn't prove bad work. What we control is the packed base and those joints, so most cracks end up where we planned them.
How do I keep kids and pets safe while new concrete is curing?
Keep them out of the garage until the concrete has hardened. Wet concrete can irritate skin and cause severe chemical burns or serious eye damage, so it's no place for small hands or paws. We'll let you know when the floor is hard enough to walk on.
Where we pour concrete
We're based in Anchorage and work in the cities around it too. Pick your area below, or just ask if you're not sure we come out your way.
Get your garage floor on the pour schedule
We pick up seven days a week, so call (907) 206-3358 or send the form whenever you're ready to talk about your floor.
