Concrete floor installation in Manchester NH - a slab ready for the floor you want
Old basement floor cracked, or a new room waiting on a slab? We build it around the flooring you'll lay on top.
What goes into a new concrete floor in Manchester?
Concrete floor installation in Manchester means our crew pours a new concrete slab that becomes the floor of your basement, garage, addition or shop, either left bare or ready for carpet, tile or wood later.
Most calls start with an old basement floor that's cracked, heaved or crumbling, or with bare ground under a new addition, garage or shop. The price moves with the size of the room, how much digging and base work the ground needs, whether old concrete has to come out first and what has to go under the slab for the flooring you want on top. The schedule turns mostly on the season, since a cold-weather pour takes more prep, and on curing, the wait while the concrete hardens before anything goes on it. When I come out, I'll write up what your floor includes, so you can see what you'd be paying for before you decide.
- Licensed and insured.
- Free estimates at your property.
- Expect a reply within 1 business day.
Concrete floors, steps and pool decks
How we handle concrete floor installation
Before we build anything, I ask what flooring you plan to lay on top, because carpet, tile or wood over a slab changes what goes underneath, and I'd rather get those layers right once. Our crew then digs out to firm subgrade, the ground the slab sits on, and packs the base in layers, since a base that's only raked level settles later and takes the floor down with it. Next comes the moisture layer your flooring calls for and, where the floor needs it, rebar, the steel inside a slab that keeps cracks tight. In warm weather we pour early in the day, because midday heat leaves a weak, dusty top, and then we trowel the surface smooth, cut control joints, shallow grooves that give the slab a planned place to crack, before it hardens too far, and let it cure.
A new floor often leads to other work around the house. When a basement or addition opens to the yard, we build concrete steps off that door so you're not stepping down onto dirt or an old wooden stoop. If the yard is next on your list, our crew builds concrete pool decks the same way, with the base dug out and packed before anything gets poured.
Why Manchester homeowners call R&S Manchester Concrete Construction for concrete floors
I give every estimate myself
I come out to look at the job and write the estimate, and I'm on site with our own crew when the work happens. So the person who heard what you want is the one watching the base go in.
Nine years running our crew
I spent years on restaurant lines, learned concrete on other people's crews and started ours in Manchester in 2017. A busy kitchen taught me that prep and timing decide how things turn out, and on a floor that means the base you'll never see.
Licensed and insured, every job
We're licensed and insured. Inside a house the work runs close to walls, stairs and finished rooms, so that cover matters even more than it does out on a driveway.
Permit side checked with the city
In Manchester, the city's building office handles plan review, permits and inspections, and the state building code sets the minimums everywhere in New Hampshire. We check your floor with that office before work starts, help you put together what it asks for, like a site plan, and either take care of the permit or walk you through it, depending on whose name the office wants on the application.
On a floor, the part you'll never see decides how the part you will see holds up. Tell us the room, its rough size in square feet, the flooring you plan to put down and when you'd like it done, by calling (603) 314-3764 or through our contact page.
Get a free estimate for your new concrete floor
Send the room, its rough size and the flooring you have in mind, and we'll reply within one business day to set up a free on-site estimate. There's no obligation and no pressure to book.
- Licensed and insured.
- Free estimates at your property.
- Expect a reply within 1 business day.
What happens after you call about a concrete floor?
Call or send a message
Call (603) 314-3764 or use the contact form, and we'll get back to you to set a time for me to come out. Tell us the room and the flooring you plan on, so I can think it through before the visit.
I walk the room with you
I look at the ground or the old floor, listen to what you want and write up an estimate that lists what's included, from the base work to the moisture layer and any steel. You'll see what's driving your price before you decide anything.
Permits sorted, pour date set
Once you say go, we work out the permit side with you and pick a pour date that suits the season. In the cold months, that date leaves room for the extra prep a winter pour needs.
We pour, then walk it together
Our crew does the work with me on site, and when the slab's done we walk it with you. I'll go over how to care for it and when your flooring can go down.
Concrete floor questions from Manchester homeowners
How much does a concrete floor cost in Manchester NH?
A concrete slab or pad in Manchester usually costs about $6 to $12 per square foot, which is the going rate in the area, not our price. Reinforced slabs cost more per square foot than unreinforced pads, so that choice shows up in the number. I'll give you a figure for your own floor when I write up the estimate.
Does the flooring I put down change how the concrete slab is built?
Yes. If carpet, tile, wood or another moisture-sensitive floor is going on top, the slab needs protection from ground moisture rising from below, so that choice is best settled before we build anything. Trade guidance says floor coverings get the most protection when the vapor retarder, the sheet that slows that moisture, sits right against the slab, so it's a fair question to ask any installer where that layer will go.
Can you pour a concrete floor in a New Hampshire winter?
Yes, as long as the fresh concrete is kept from freezing, because concrete that freezes below about 25°F can lose more than half its potential strength and won't last. Industry guidance says a cold-weather pour should stay protected for about two days after it's placed, and snow and ice come off first so the surfaces the concrete touches are above freezing. Sometimes that means insulating or heating the ground under the slab before the pour, which adds time and cost.
How thick should a concrete floor slab be in a house?
Residential floor slabs around Manchester usually run four to six inches thick, with garage, foundation and basement slabs toward the thicker end. The right thickness for yours depends on what the room has to carry, and it's one of the things I'll spell out on your estimate.
How do I keep radon from coming up through a new concrete floor?
Seal the openings and cracks in the slab, including the crack along its edge, because radon guidance calls for sealing those spots against radon and other soil gases. Potential radon exposure across New Hampshire runs higher than the national average, though that's a statewide picture and not a reading of your house. Ask whoever builds your floor how those spots will be sealed, and I'll go over it with you when I walk the room.
How long does a new concrete floor need to cure before flooring goes on?
When a moisture-sensitive floor covering is going on top, trade guidance says to cure the new slab under plastic sheeting for 3 days and to keep any moist curing, where the surface is kept wet, to 7 days or less. Curing is the stretch where the concrete gains its strength, so it's worth planning your flooring installer's start around it.
Work that goes with concrete floor installation
Concrete pool decks
If the project reaches outside, a pool deck needs a textured surface that grips wet feet and slopes water away from the pool and the house.
Concrete steps construction
Worn, crumbling or tilting steps at any door are worth fixing while our crew is already lined up for your new floor.