Concrete joint sealing and crack repair
Keep snowmelt and rain from getting under your concrete, which is what causes most settling in the first place.
Concrete slabs are cut into sections with control joints, and the gaps between slabs and along the house are open paths for water. In Bismarck, water that gets under a slab freezes and thaws through a long winter, washing out and loosening the base. Sealing joints and cracks with a flexible sealant slows that down.
Where sealing helps most
- The joint where a patio, stoop or driveway meets the house
- Control joints in driveways and garage aprons
- Cracks that have opened up after a slab moved
- Holes and joints after a leveling job
What sealing can't do
Sealant won't lift a slab that has already sunk, and it won't stop surface scaling caused by deicing salt. It's maintenance that helps leveling and new concrete last longer.
How often?
Flexible sealants wear out over time from sun, traffic and movement. Check them each spring after the thaw and reseal where they've cracked or pulled loose.
The contractor prices the job after seeing the slab and working out why it moved. We don't quote prices, and any number given over the phone is only a rough starting point.
Where we connect you with help
Common questions
Should I seal joints myself?
You can seal small joints with a self-leveling concrete sealant from a hardware store. Large or many joints, and joints after a leveling job, are often worth having a contractor do.
When is the best time to seal concrete joints?
In mild, dry weather, when the concrete is clean and dry. In Bismarck that usually means late spring through early fall.
Related services
- Concrete leveling (mudjacking and foam)
- Sidewalk repair and city notices
- Driveway and garage apron repair
- Steps, stoops and patios
More background: Bismarck concrete repair guide.
Got a slab that's sinking or a sidewalk notice from the city?
Call now and a local concrete contractor will look at it and quote the repair.