Questions answered

Everything you need to know about concrete lifting, polyurethane injection, and our process.

Answers

Concrete lifting questions answered for homeowners and businesses across Colorado.

How long does polyurethane lifting last?

Polyurethane lifting lasts 20 years or more. The foam fills the empty space under the slab that let it sink in the first place, so the concrete sits on solid support again instead of a gap. Colorado's freeze-thaw cycles won't break down the polyurethane.

What can shorten any concrete repair is water getting under the slab through open cracks and joints, so we recommend sealing them. Lifting and stabilization are backed by our 5-year material and workmanship warranty.

Crack sealing isn't covered by that warranty, but it lasts 3–5 years, and resealing is quick and inexpensive.

Is polyurethane better than replacing concrete?

For most sunken concrete, yes. Lifting costs 50–70% less than tearing out and replacing the concrete, because there's no demolition, no hauling and no new pour. We inject polyurethane foam through small holes beneath the slab.

The foam cures in minutes, and most residential jobs finish the same day, so you can use your driveway or walkway immediately. Replacement means breaking out the old slab, hauling it away, pouring new concrete and waiting for it to cure. And unless the soil problem underneath is fixed, the new slab sits on the same ground that let the old one sink.

If a slab is too broken up to lift, we'll tell you at your free inspection.

How long does the lifting process take?

Most residential jobs finish the same day. We drill small holes in the sunken slab, inject polyurethane foam beneath it to lift the concrete back toward level, and clean up before we leave. The foam cures in minutes, so you can drive or walk on the concrete immediately.

Commercial projects take longer depending on their size, and we schedule them to keep downtime and disruption to a minimum.

Getting started is quick too: inspections are free and first-come, first-served, usually within about 3 days of your call, and most jobs start within 1–2 weeks.

Can you lift large commercial slabs?

Yes. We lift and level commercial concrete, including parking lots, warehouse floors, loading docks, school and municipal walkways, and HOA and apartment sidewalks.

It's the same polyurethane method we use on driveways: small injection holes, foam that cures in minutes, and concrete that's usable immediately, with no tear-out. That makes it a fast way to remove trip hazards and level walkways to ADA accessibility standards.

Larger projects take longer depending on their size, and we schedule commercial work to keep downtime to a minimum for your tenants, customers and staff.

Lifting and stabilization are backed by our 5-year material and workmanship warranty, and every project starts with a free on-site inspection.

Is lifting safe in Colorado's freeze-thaw cycles?

Yes. Polyurethane lifting holds up to Colorado's freeze-thaw cycles and lasts 20 years or more. The foam doesn't absorb water, so it won't wash out from under the slab the way soil and mudjacking slurry can.

That matters here, because most sinking starts with water. It gets under the slab through cracks and joints, softens our clay soils, then freezes and pushes the soil aside, leaving a bigger gap each winter.

Lifting fills that gap, and sealing cracks and joints helps keep the water out. Crack sealing lasts 3–5 years, and resealing is quick and inexpensive.

Lifting and stabilization are backed by our 5-year material and workmanship warranty.

Is polyurethane better than mudjacking?

Yes. Mudjacking is an older method that can still work, but polyurethane does the same job with less weight, smaller holes and a faster finish.

Mudjacking pumps a heavy slurry under the slab through larger holes. That extra weight sits on the same soft soil that let the slab sink in the first place, so the slab can settle again.

The slurry also takes time to cure, and it can wash out as water moves under the slab through Colorado's freeze-thaw cycles. Polyurethane is a lightweight foam injected through small holes beneath the slab. It cures in minutes, most residential jobs finish the same day, and you can use the concrete immediately.

Polyurethane lifting lasts 20 years or more and is backed by our 5-year material and workmanship warranty. That's why RightLift lifts with polyurethane instead of mudjacking.

Why is my driveway sinking?

Usually because the soil under it has washed out or settled, leaving an empty space beneath the slab.

In Colorado, most sinking starts with water. Rain, snowmelt and downspout runoff get under the concrete through cracks, joints and the edges of the slab.

The water softens our clay soils and carries soil away, and when it freezes it pushes the soil aside, so the gap grows each winter. Soil that wasn't compacted well when the driveway was poured can settle on its own, too. Once the slab loses support underneath, it sinks or tips.

Lifting fills that space with polyurethane foam and raises the slab back toward level, and sealing the cracks and joints helps keep the water out. Inspections are free, so we can tell you what's causing it and whether the slab can be lifted.

Ready to lift your concrete?

Schedule a free inspection with one of our tradesmen today.

Hand measuring about 4 inches of vertical displacement on a cracked and uneven concrete sidewalk with a tape measure.