Concrete Crack & Floor Repair in Dubuque, IA

Concrete crack and floor repair is part of almost every coating job we do in Dubuque, and sometimes it is the whole job. With 30.4% of the city's homes built in 1939 or earlier, according to census figures for 2019 to 2023, many garage and basement floors here have decades of wear. Salt scaling at the garage door, cracked slabs, broken control joints and old patches that never matched are all common. Fixing them gives a coating a sound surface. It also makes a bare floor safer and easier to clean.

Common damage we see

• Scaling: the top layer flakes away, often near the garage door, from salt and freeze-thaw
• Spalls and pits: chunks or pockets of concrete broken out by impact or weathering
• Hairline and shrinkage cracks: thin cracks that are usually cosmetic
• Broken joint edges: control joints chipped by wheels and plows
• Low spots: areas where water sits after the snow melts off a car
• Old patches: past repairs that crumble or sit higher or lower than the floor

Cosmetic crack or structural problem?

Most cracks in garage and basement floors are from shrinkage and settling and are not a structural concern. HomeGuide notes that cracks wider than about 1/4 inch may point to a foundation problem and that a structural engineer typically charges $100 to $200 per hour to inspect. Cracks that keep widening, slabs that heave, or edges that are offset are signs to get that look first. Dubuque's bluffs and hillsides add to the reasons to check: homes built into a slope can see more soil movement and water pressure on one side. We will tell you if a crack is beyond a floor repair.

How repairs are made

We grind out loose or weak concrete, clean the area, and fill with a repair material suited to the job: flexible fillers for cracks that may move slightly, rigid epoxy or polyurea fillers for cracks that are stable, and patching mortars for spalls and pits. Repairs are ground flush with the floor so the surface is even. Control joints can be rebuilt with a semi-rigid filler that supports wheels and keeps the joint working.

Resurfacing badly scaled slabs

When scaling covers a large part of the floor, patching spot by spot does not make sense. A thin cementitious overlay can restore a sound surface. HomeGuide lists basic garage and basement floor resurfacing at about $3 to $5 per square foot. A resurfaced floor can be left as is or coated afterward.

Low spots and sunken slabs

Low spots inside a garage can be built up with leveling compound before coating. A whole slab that has sunk is a different job. HomeGuide lists mudjacking at about $3 to $6 per square foot and foam leveling at about $5 to $25 per square foot. If your floor needs lifting, we will tell you and help you plan the coating afterward.