4.9 
Cracked Concrete
Cracked concrete happens when part of a concrete slab breaks and sinks into underlying soil that has compressed or washed away. These cracks aren't just unsightly; they offer moisture a way to seep beneath the slab. This can cause the underlying soil to soften or even wash away completely. That, in turn, can cause the slab to crack further as it sinks into the void left by the washed-away soil.
Stairway Separation
The walkway slab is sinking, causing the stairs to separate from the walkway slab.
More Cracks
Close-up of cracks in the walkway slab.
Cracks in Driveway
To prevent moisture from seeping into the soil beneath, those cracks need to be sealed, as do the control joints that were cut between the slabs when they were first poured. While you could seal them with urethane caulk found at your local big-box DIY store, that is a solution that is prone to cracking, bubbling and drying out over time. Which means you'll likely be sealing them again... and sooner than you thought.
Concrete Lifting
PolyLevel uses a high-density polyurethane foam to fill voids and stabilize and lift sinking concrete slabs. The expanding properties of the two-part urethane formula allows for accurate leveling of the slab. The result is a waterproof repair that's much more permanent than mudjacking and other common concrete repair methods.
Lifting of Walkway
An uneven sidewalk not only looks bad, but it creates a tripping hazard. If the concrete slab is still intact, don't waste your money on replacing the concrete. With PolyLevel, we can raise your sunken sidewalk, allowing you to walk on the sidewalk within an hour. Our sidewalk leveling process saves you time and money.
PolyLevel Application Complete
PolyLevel® weighs only about 4lbs. per cubic ft., compared to 120lbs. per cubic ft. for standard fill material. PolyLevel®'s light weight makes it useful where denser fill material might impose an undesirable load on weak soils. Despite its light weight, PolyLevel® can support substantial loads; it typically provides greater lifting power than mudjacking.
Cracks Sealed
Once the PolyLevel has lifted the concrete, we start the crack sealing process. NexusPro is a silicone-based sealant for joints and cracks specially formulated to provide long-lasting flexibility and to stand up to harsh weather conditions. Unlike traditional polyurethane sealants, NexusPro resists UV rays, which means it won't crack, bubble or dry out. That means a single application can seal the joints and cracks in your concrete driveway, patio, pool deck or sidewalk for years to come, protecting it from damage caused by soil compaction and washout.
Joints Sealed
The walkway joints are sealed. This will prevent any further separation.
Project Complete
The concrete has been lifted and the cracks have been sealed, saving this customer a lot of money in comparison to pouring a whole new driveway and walkway.