Slab foundation building in Auburn ME - a floor that stays flat through Maine winters
Building a new house, garage or addition on a slab? We dig it out, pack the base and pour a floor sized for the frost here.
- Licensed and fully insured.
- Free on-site estimates.
- Replies within 1 business day.
What does it take to build a slab foundation in Auburn?
Slab foundation building in Auburn means pouring a concrete floor for your house over a packed stone base and a moisture layer. Inside it goes a grid of rebar, the steel that holds the concrete together, and around the outside goes a thicker edge. Your house plans and the frost depth where you're building decide how big that edge or its footings need to be.
Most people who call us have a set of plans, a cleared lot and a builder or a bank asking what's going under the house. We're based in Auburn and work in Lewiston, Portland and plenty of other cities around them. The price moves with the size of the footprint, how much digging and grading the lot needs, and whether you need deeper concrete footings or an insulated design. The schedule turns on the season, the ground and what the city needs before we start. I'll measure it on site, and you'll get a written estimate with your own number.
How we build a slab foundation
First I walk the lot with you, and we talk through whether a plain slab, deeper footings or an insulated shallow design fits it. I check with the local code office before we settle it, because the city's answer can change the plan. Then we dig out the subgrade, the soil the slab sits on, down past the topsoil and soft spots, and pack it so the slab doesn't settle with the dirt. The stone and the moisture layer go in next, and we take our time with them, because nobody fixes those once the house is on top. We set the rebar, form the thicker edge, pour and finish. After that the slab cures, which is the wait that lets concrete reach its strength before anyone builds on it. When a budget gets tight, people want to cut the base because nobody sees it on day one. I'd cut almost anything else first, since a slab never forgets what it was poured on.
Some plans need more than a slab. If yours calls for a basement or full frost walls, that's our foundation installation work, and we can look at it on the same visit. For a shop or a small commercial building that needs somewhere to park, we also handle concrete parking lot building, so one crew handles the grade around the whole site.
Plain slab with a thickened edge
This suits a garage, a shed or a house where the plans and the frost depth at your address let a thicker edge carry the load. It's the simplest of the three and usually costs the least, but it isn't the answer everywhere frost runs deep.
Slab on footings below the frost line
Concrete footings go down below the frost line, and the slab is poured inside them so freezing ground doesn't heave the edges. This suits most houses where the frost goes deep and the lot or the plans rule out an insulated design.
Frost-protected shallow foundation
A builder's guide for this design says insulation placed around the building raises the soil temperature, so the foundation can sit shallower and go in with one placement of concrete, which speeds construction. The guide says it suits slab homes on lots with moderate to low slopes, so a steep lot usually points to one of the other two.
Slab foundation building in Auburn starts with the frost line
The frost depth decides how deep a footing goes, and Maine has no single number for it. One Maine builder says each town publishes its own frost line, from 48 inches on the coast to 72 inches in the western mountains, and that the Code Enforcement Officer has the figure for each address. So we don't guess. We get the number for your lot before we size anything, and we do the same on jobs in Lewiston and Portland, because the answer changes from one city to the next.
In Auburn, the city's Permitting and Code Enforcement department takes building permit applications and residential energy code permit applications, and Public Works takes fill and excavation permit applications. Both are at Auburn Hall. A slab job digs and fills as well as builds, so it can touch more than one of those offices. Before we book a job, I check with the city on what yours needs, and when a permit is called for, we handle the application. If you'd like to look first, the departments are listed on the city's permits page. Most of the slabs we pour around here go under new houses, garages and additions, and the questions at the city are usually the same ones.
Why Auburn homeowners call Sterling Auburn Concrete for slab foundations
The owner prices and pours
I come out myself to look at the lot and give the estimate, and I lead the crew that does the work. The person who talked through your base with you is the one standing there when the stone goes in.
In business since 2013
I started this business in 2013 after learning the trade on other crews, and slabs that sit flat are what people around Auburn know us for. That's 13 years of finding out which shortcuts come back to bite.
Licensed and fully insured
We're licensed and fully insured. With an excavator on your lot and a concrete truck backing in, that's the part you hope never matters but want in place.
Satisfaction guaranteed on every job
Satisfaction guaranteed on every job. I want a slab to still look right years from now, not just the day we leave.
On a foundation, the work worth paying for is the work you'll never see again once the house goes up. Request an estimate or call (207) 707-4423, and I'll come out to look at your lot.
Request a quoteGet a free on-site estimate for your slab foundation
We reply within one business day to set a time, and the estimate is free with no obligation. I come out to look at the lot, measure it and ask how you'll use the building. Then you get a written estimate.
What happens after you call about a slab foundation?
Call and book a visit
You call (207) 707-4423 or send the form, and we set a time for me to come out. I'll look at the lot, measure it and ask how you'll use the building.
Get your written estimate
You get a written estimate, so you see the number before anything goes on the calendar. When you're ready, we check what the local permit office needs and set a pour date that suits the job.
Build the base, then pour
Our crew digs out, packs the base and sets the stone, moisture layer and rebar before any concrete shows up. Pour day is planned around the weather and the ground.
Cure it and walk it
We finish the slab and cure it properly before anyone builds on it. Then I walk it with you before we pack up.
Frequently asked questions
What does a slab foundation cost in Maine, and what costs extra?
A 1,200 sq ft slab foundation in Maine, installed with excavation, gravel base, rebar and the pour, usually costs about $9,000 to $20,000 per job. That's a statewide figure, not our price. In one national cost model, excavation, grading, footings below the frost line, plumbing under the slab and permits can add to the price beyond the slab itself, so ask what each bid includes.
Does a slab foundation work in Maine where the frost runs deep?
Yes, but usually not as a plain slab. Where frost runs deep, a plain slab usually gives way to footings below the frost line, a basement or a frost-protected shallow foundation. Ask the building department for the frost depth at your lot before you pick one, or let us ask when we come out.
How do you pour a slab foundation in cold weather in Auburn?
You thaw the ground first, then pour. A cold-weather concreting guide calls for placing concrete only on thawed ground, warmed with ground heaters or blankets when needed. So a late fall or winter pour starts with thawing, and it's worth building that step into your schedule.
How do I keep moisture from coming up through a slab foundation?
Ask for a capillary break, a drainage layer under the slab that stops water from wicking up into the foundation. EPA guidance for new homes recommends loose stone, or sand with a fabric layer called geotextile matting, for that pad. When you compare bids, ask whether each one includes it.
Is it cheaper to add radon protection while a slab is being built?
Usually, yes. The EPA says adding radon-resistant features while a home is built typically costs the builder less than treating the home for radon after construction. If it's on your mind, bring it up before the pour, because that work goes in under the concrete.
Does Maine's building code apply to a new slab foundation in Auburn?
Yes. Maine law requires communities with more than 4,000 residents to enforce the state building and energy code, and meeting it is mandatory and the building owner's responsibility whether or not a town enforces it. That's one reason we check with the city before we settle a design.
Other foundation and site work we do
Foundation installation
When your plans call for a basement or full frost walls instead of a slab, this is the deeper foundation that carries the house below the frost.
Concrete parking lot building
Putting up a shop, office or small commercial building on a slab? A concrete lot gives customers and trucks a flat, drained place to park through plowing and Maine winters.
Auburn, ME
Book a look at your building lot
Have your lot address, the planned footprint and the season you'd like to pour handy when you call, so the first visit covers what your foundation actually needs.