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Our Services

  • Lifts settled slabs and slab foundations
  • Lifts and levels sunken sidewalks driveways and patios
  • Levels concrete steps and landings
  • Fills sinkholes and other voids
  • Lifts, levels and stabilizes roadways and airport runways
  • Strengthen and stabilizes loose soil for preconstruction applications

Our PolyLevel® Dealers Serving New Hampshire

356 North Berwick Road, Unit #7
Wells, ME 04090

TC Hafford Basement Systems is the authorized PolyLevel dealer of Maine, providing their concrete leveling and foundation repair services to residents all throughout Greater Portland. Whether you are dealing with a sinking foundation or a cracked and uneven sidewalk or patio – TC Hafford Basement Systems has a solution for you!

358 Gallison Hill Rd
Montpelier, VT 05602
Serving all of Vermont and New Hampshire, Matt Clark's Northern Basement Systems will raise any concrete slab back to its original, level position with the effective new method of PolyLevel, and seal concrete slabs against damage with SealantPro.
14 Clement Rd
Hudson, NH 03051
Erickson Foundation Supportworks specializes in a new, efficient way of raising and leveling sinking and cracking concrete slabs, known as PolyLevelâ„¢.


Conditions where outdoor concrete has already begun to sink is not uncommon in New Hampshire and is often the result of shifting or a weak soil base or erosion. It causes driveways, sidewalks, walkways, concrete steps or patio areas to become tripping hazards and can effect property value.

New Hampshire, also known as The Granite State, hosts a variety of soil types, ranging in density and load-bearing capacities. Although Mount Washington was dubbed "the world's worst" weather by the weather observatory, the appeal of mountains and snow is a big draw for winter sports fans.

Soil in any environment can change, however. When the weight above the soil exceeds the soil below, the soil will compact and settle. Clay and silt can also cause soil to compact when it becomes dry. Regardless of the reason, once soil becomes compact, heavy concrete above the soil will sink and crack. It's a gravity thing!

While it is a very noticeable problem, with the right contractor, it can have a very simple solution.

Previously, sinking concrete was repaired by a technique called "mud jacking" that uses a thick slurry to fill in the gap underneath the sunken concrete. While effective, it is not the most efficient way to solve the problem, and adds more weight above the compacting soil.

Today, select contractors in New Hampshire are trained and certified to provide a better alternative to mud jacking. PolyLevel is a less intrusive, lighter weight solution that doesn't add more weight to the problem.

If you are seeing signs of sinking concrete on your property, have a contractor certified to provide the PolyLevel alternative to mud jacking take a look at it. The following New Hampshire contractors are trained and certified to provide a free estimate to solve your sinking concrete problem.

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Recent job requests for PolyLevel in NH:

Project Location: Monticello Dr, Amherst, NH 03031

Comment: Looking to level concrete pool deck that has settled over the years

Project Location: Royal Crest Drive,, Nashua, NH 03060

Comment: Looking for a *rough* estimate to level a set of four concrete steps on the front of a house.

Project Location: Hamlet Circle, Merrimack, NH 03054

Comment: Some sections of my concrete pool deck have shifted causing them to become un-level and creating a gap.

Project Location: Joseph Road, Salem, NH 03079

Comment: Cement basement floor slab approximately 600 square feet is being washed out underneath the slab no settling or cracks yet. Slab has not been compromised as of this writing.

Project Location: Wind Song Ave, Manchester, NH 03104

Comment: Patio sunk water runs toward the house.

Project Location: Fox Hollow Court, East Kingston, NH 03827

Comment: I have a 13 year old stamped concrete deck around my pool that is sinking in a few spots. My cell is 603-778-5036 if you don't get me at my home #.

Project Location: Larkwood Rd., Laconia, NH 03246

Comment: Sunken & cracked garage floor.

Project Location: Barker Rd, Stratham, NH 03885

Comment: Garage floor slab sinking

Project Location: Gunstock Hill Rd, Gilford, NH 03249

Comment: Section of concrete inground pool decking is cracked and has sunk a couple of inches.

Concrete slab lifting for Commercial Buildings