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Garage floor concrete in Redmond WA - a floor that holds up to daily use and drains

Garage floor cracked, dusty or holding water? We pour a new slab that sits level and drains toward the door.

Exposed aggregate concrete patio beside a house, with a stacked-stone outdoor kitchen wall and swimming pool.
  • Licensed and insured.
  • Free in-person estimates.
  • Expect a reply within 1 business day.

What goes into replacing a garage floor in Redmond?

Garage floor concrete in Redmond is new concrete placed over a packed base, then finished, jointed and cured so it stands up to cars, tools and the daily wear a garage gets.

Most people who call Allied Redmond Concrete about a garage floor have an old slab that's cracked, sunk or flaking, or a new garage with bare dirt where the floor should be. We're based in Redmond and work in the cities around it. The price mostly turns on the size of the garage, whether the old slab has to be broken out and hauled off, how much base work the ground needs and whether you plan to coat the floor later. The schedule turns on the weather and on a permit if your job needs one, and you get your own figure in a written quote with each part of the job on its own line.

Curved stamped-concrete patio with a circular stone fire pit beside a fenced backyard.

How do you know your garage floor needs replacing?

  • Cracks that keep spreading

    A crack that started thin and keeps getting wider or longer usually means the ground under the slab has settled or the floor never got joints to crack along. Every winter you wait, water and salt get into it and the edges break off a little more.

  • Water that sits in puddles

    If the drips off your car pool in a low spot instead of running out the door, the slab has usually sunk or was poured uneven. That water soaks into the base below, so the low spot tends to get lower.

  • A dusty or flaking top

    Grit that comes back every time you sweep, or a top layer peeling off near the door, points to a weak surface or salt damage. It keeps wearing away, and a coating has a poor surface to grab onto.

How we pour garage floor concrete

We break out the old slab if there is one, dig down to the subgrade, which is the ground the slab sits on, and pack the base firm instead of raking it level. That base is the part you'll never see again and the first thing people want to trim from a budget, and I'd rather spend your money there than on a fancier finish, because a nice surface on a soft base settles anyway. We set the forms so the floor falls toward the door and not toward the house, then pour, finish and cut control joints, shallow cuts that give the slab a straight line to crack along instead of wherever it likes. A garage floor depends on timing after the pour, so I keep the crew on finishing and joint cutting at the right moment instead of letting it slide. Then we cure it, keeping the top from drying out too fast so it hardens properly, and clean up. If you plan to coat the floor later, tell me at the estimate so we set the slab up for it.

A garage floor often connects to other work outside. If you want color or texture on the apron or the walk to the door, that's decorative concrete, and it's easiest to plan before the pour. On a sloped lot where the ground beside the garage sits higher than the slab, concrete retaining walls hold that dirt back so it doesn't press on the new concrete or wash onto it.

  • Tear out and replace an old floor

    This suits a floor that's cracked or sunk across most of the garage, because by then the base under it has usually given out. Patching the top won't fix what's going on underneath.

  • A first floor for a new garage

    This suits a new garage or an addition, where we build the base from scratch and get the slope right from the start. It's the cheapest time to get the prep right, since nothing has to come out first.

  • A floor set up for a coating

    This suits anyone planning epoxy or another coating down the road. We plan the slab for it before the pour, because that's the only time some of those choices can be made.

Stamped concrete patio beneath a timber pergola beside a brick house, with an irregular stone pattern.

Get a written quote for your new garage floor

Send the form and we'll get back to you within one business day to set up a free estimate on site. There's no obligation, and you get a written quote with each part of the job on its own line.

(425) 285-8289

What happens when you call about a garage floor in Redmond?

Here's how a garage floor job goes from your first call to a swept-out garage, and who you'll be dealing with at each step.

  1. Call or send the form

    Call (425) 285-8289 or send the form, and we'll set a time for me to come see the garage. If an old slab has to come out, mention it so I know what I'm walking into.

  2. I come out and measure

    I look at the old slab and the ground around it, measure, and ask how you use the garage. Your written quote lists each part of the job on its own line, so you can see what the base work costs next to the pour and the finish.

  3. We set a date and pour

    Once you say go, we pick a date and take care of the permit side if your job needs one. Our crew does the work and I run it on site, from the prep to the cleanup.

Why Redmond homeowners call Allied Redmond Concrete for garage floors

The time to ask how a floor gets built is before the truck shows up, so send us your garage details or call (425) 285-8289.

  1. I look at your garage myself

    The person who comes out for the estimate is me, and I'm on site running the job when our crew pours it. What I see at your house is what we plan the base around.

  2. Pouring slabs since 2021

    I learned concrete on flatwork and foundation crews and started this business in 2021. I've seen plenty of slabs fail, and nearly every time the reason was underneath.

  3. Licensed and insured for your job

    We're licensed and insured. It's one of the first things worth checking on any contractor, and I'll go over it with you at the estimate.

  4. Permits handled with city or county

    If your floor needs a permit, I'll tell you at the estimate, and we handle the application and inspection requests with the City of Redmond or the county. If a question falls outside what we handle, I'll point you to the right permit office.

Garage floors and the work around them in Redmond

Redmond requires building permits for remodels, new garages and work that isn't on its exempt list, and that list names driveways but not garage floors, so whether your floor needs a permit isn't settled until someone checks. If you'd like to ask the city yourself, the Development Services Center answers permit questions. On a permitted pour, inspections have to be requested as the job goes and before anything gets covered up, and skipping one can hold the job up, so we book them before the base disappears under concrete. The city also wants debris from a permitted job taken to designated facilities, with waste reporting done before the permit can get its final inspection, so we haul the old slab where it's supposed to go.

The ground matters as much as the paperwork. One site report in Redmond found glacial till soils heavy in silt that were hard to compact when wet, and it favored doing earthwork in summer and fall when the weather is drier. We run into silty ground on jobs in Kirkland and Sammamish too, so I check how wet the base is before we pack it.

Stamped concrete patio with a gray stone pattern surrounds a round, stone-sided fire feature beside a raised deck.
Overhead view of a large gray stamped concrete patio with outdoor seating, a dining table, and leafy shade trees.

Questions about garage floor concrete in Redmond

(425) 285-8289
How much does a new concrete garage floor cost in Redmond?

A garage floor in the Puget Sound area usually costs about $4,000 to $8,400 per job, based on a Seattle-area estimate, not our own price list. Where yours lands depends mostly on the size and whether the old slab comes out. Your written quote shows each of those costs on its own line.

What causes a new garage floor to crack or get dusty?

Most often it's timing after the pour. National guidance on floor and slab work says mistiming the finishing, jointing and curing can lead to cracking, dusting, high or low spots and poor drainage. Ask any contractor you're considering how their crew times each step after the pour, because that plan shapes how the floor wears and drains.

Should a garage floor have a vapor retarder if I plan to coat it?

Where the vapor retarder sits matters if you plan to coat or cover the floor. National guidance says coatings and coverings get the best protection when the vapor retarder, a barrier layer under the concrete, is in direct contact with the slab. Ask where that layer goes before the pour, since it can't be moved afterward.

Does de-icing salt damage a concrete garage floor?

It can. Surface scaling, where the top layer flakes off, is the most common kind of frost damage to concrete, and it's linked to de-icing salt. Salt rides into the garage on your tires and drips off while the car sits, so the area just inside the door usually goes first.

What is the best way to protect a garage floor from road salt and freezing?

Start with the mix. National guidance says air entrained concrete, which has air mixed into it, resists freeze and thaw damage better when it's soaked and limits scaling from ice-melt chemicals. If your floor sees ice-melt off the street, ask whether the mix is air entrained before you sign anything.

What should I have ready before I ask for a garage floor estimate?

Have the garage's rough size, whether an old slab has to come out and any plan to coat the floor. Those three things change the quote the most, so having them handy makes the first call quick. Call (425) 285-8289 or send the form.

  • Decorative concrete

    Choose this when a garage apron, entry or patio should look like more than plain gray, with color or texture picked before the pour.

  • Concrete retaining walls

    When a cut bank crowds your driveway or garage, a wall holds the soil back so it stops slumping onto the concrete or washing out underneath it.

Service areas for garage floor concrete

Allied Redmond Concrete is based in Redmond, WA, and pours garage floors in the cities around it. The 12 cities listed here, including Bellevue and Woodinville, each have their own page, and we work in plenty of other nearby cities too.

Redmond, WA

Get your garage floor quote started

One visit tells you whether your old slab can stay or has to come out, before you spend anything on the garage.