A&B Waltham Concrete

Concrete floor installation in Waltham MA - a floor that wears well and drains right

Old floor dusting, cracking or uneven? We plan the pour, finish, joints and curing so the new floor comes out hard and level.

A reddish-brown stamped concrete patio has a repeating diagonal geometric pattern and a narrow border, with grass along its edges.
Curved swimming pool and raised round spa bordered by gray stone pavers, with a stone fireplace and patio seating behind.

Concrete floor installation is timing. The pour is only the start.

At A&B Waltham Concrete, concrete floor installation in Waltham means placing the concrete, then finishing, jointing and curing it. Done right, the top becomes a hard surface that stands up to wear and drains the way it was planned, whether it's a basement, a garage or a shop floor.

Most floors that disappoint went wrong in the few hours around the pour. Industry guidance says poor timing of the finishing, jointing and curing can lead to cracking, dusting, scaling or high and low spots, and once the top has set, you're living with it.

What moves the price is the floor's size, how close the truck can get, how much base work the ground needs, whether a moisture barrier goes under it and whether it ties into other work like new concrete steps or a concrete pool deck. The schedule turns mostly on the weather and any permit steps, and your written estimate spells out what's included.

Aerial view of a rectangular swimming pool surrounded by a pale concrete deck, with steps, lounge chairs, and a colorful float.

Concrete floor installation starts with planning. The truck comes last.

I come out for the estimate myself and ask a lot of questions about how you'll use the floor, what goes on top of it and how the truck gets close. A good floor comes down to timing the finishing, the joints and the curing right around the pour, so we plan all three before anything is scheduled.

In Waltham, the city's building department enforces the city and state codes for building work, and the property owner signs the application. A shed on a fixed slab also needs a certified plot plan, a drawing of its distance from the house and lot lines. I sort out which office your job runs through and handle the permit steps for our work.

Concrete floor installation has six parts. Each one shows later.

  • Digging out the base

    We dig out to firm ground and pack the subgrade, the soil the slab rests on, so the floor doesn't settle with loose dirt.

  • Placing the vapor barrier

    We plan the vapor barrier, the sheet that blocks ground moisture, before the pour. Industry guidance says it protects a covered or coated floor best sitting right against the slab.

  • Placing and leveling

    We set the forms to height, then place the concrete and strike it off flat with a straightedge before it starts to stiffen.

  • Finishing the surface

    We trowel the top when the concrete is ready for it, not on a clock, because that timing decides how hard the surface wears.

  • Cutting control joints

    Control joints are shallow cuts that give the slab a planned place to crack as it shrinks, so we cut them on time, not days later.

  • Curing the slab

    Curing means keeping the new slab damp and protected while it hardens, because concrete that dries out too fast ends up weaker at the top.

Concrete patio with large light-gray slabs beside a brick home, bordered by river stones and a leaf-covered garden bed.

Concrete floors and slabs last from the ground up. We start there.

A floor done badly usually fails from below or from the top. A base that was raked level instead of dug out and packed settles with the dirt, and a pour in midday heat can leave a weak, dusty top, with cracks turning up wherever the slab picked.

If the budget has to give, I'd rather it came out of the finish than the base. Nobody sees the base on day one, so it's the first thing people want to cut, but a nice surface on loose ground won't stay flat. We put the money under the slab first.

From first call to final walkthrough. Here's how the job runs.

  1. You get in touch

    Call (781) 622-9470 or send the form with a few details about the floor, and we get back to you to set up a visit.

  2. I look at the site

    I come out myself, check the ground, access and where water goes, and ask how you'll use the floor and whether it'll be covered.

  3. Your written estimate

    You get a written estimate showing what's included, and before the pour goes on the schedule we line up any permits, surveyors or engineers the job needs.

  4. The pour and walkthrough

    We pour within the city's work hours, weekdays 7 am to 5 pm and Saturdays 8 am to 4 pm, with me there at key steps, then walk the floor with you.

Tell us about your floor. I'll come take a look.

Send the floor's size, home type, whether you live there and any planned covering. We reply within one business day to book a free on-site estimate, no obligation.

(781) 622-9470

We're based in Waltham. We work across the cities nearby.

From our base in Waltham we pour floors in Newton, Watertown and many other cities nearby, so if yours isn't listed, call (781) 622-9470 and ask.

(781) 622-9470

Mon–Fri: 7 AM–10 PM, Sat–Sun: 6 AM–11 PM

Concrete floor questions, answered plainly. Ask me anything else.

The answers below cover cost, cracking, cold weather and registration. If your question isn't here, call (781) 622-9470 and ask me directly.

How much does a concrete floor cost in Massachusetts?

A concrete slab in Massachusetts usually costs about $7 to $13 per square foot. That's the going rate across the state, not our price, and it's per square foot, so a bigger floor costs more in total. Your written estimate after I see the site shows what's included for yours.

Will my new concrete floor crack like the old one did?

Some cracking is normal because concrete shrinks as it hardens, so the aim is to control where it goes. We cut the control joints on time, pack the base and plan the finish and cure around the pour, so a crack usually lands in a joint instead of across the middle of the floor.

Can a concrete floor be poured in cold weather in Waltham?

Yes, with a protection plan, which is how we handle cool-season pours. Industry guidance calls it cold-weather work when the air drops, or is expected to drop, below 40°F while fresh concrete needs shielding, and says it still gains enough strength if it's properly mixed, placed and protected. A Michigan concrete association's guide adds that the ground should be at least 40°F, thawed first if frozen.

Does a concrete contractor in Massachusetts have to be registered?

Yes, for work on an existing home you live in with one to four units, the state requires a Home Improvement Contractor registration, and the state's Home Improvement Contractor program handles complaints and can pay eligible homeowners up to $25,000 for unpaid judgments against contractors. On 1- and 2-family homes, a licensed construction supervisor or registered design professional must oversee the work, with a separate homeowner exemption. We're licensed and fully insured.

A wide concrete driveway with expansion joints leads to a brick house, bordered by lawn and autumn trees.

Planning a concrete floor or slab? Call for a free estimate.

Tell us where the floor goes and what will sit on it, and we'll set a time to come look, since cool-season pours need planning ahead.

(781) 622-9470
Call(781) 622-9470