Concrete Caulking2026-11-05T11:31:55-06:00

Concrete Caulking & Crack Sealing with NexusPro®

Close concrete joints, cracks and gaps with NexusPro® to keep water out, limit freeze-thaw damage and help prevent future settlement.

What Is Concrete Caulking?

Concrete caulking seals joints, cracks and gaps using a flexible material that moves as the slab expands and contracts. Closing off these gaps helps stop water and deicing salts from washing into and eroding the supporting soil below.

Caulking counts as preventative maintenance, not just a cosmetic fix. When your concrete is still level, joint sealing may be all that’s necessary. If the slabs have already settled or become uneven, they should be lifted first and sealed afterward for longer-lasting protection.

Why NexusPro® Outlasts Hardware-Store Caulk

NexusPro® is a self-leveling polyurethane sealant engineered to stay flexible through seasonal expansion and contraction. It also stands up to UV exposure, water and deicing salts, making it better suited to the conditions concrete faces in Sioux Falls.

Unlike store-bought caulk, NexusPro® is professionally installed by Blackburn Foundation Repair-trained crews who remove failed material, prepare the joint and apply the correct amount of sealant for a clean, durable result.

Our Concrete Caulking & Joint Sealing Solution

  • For sealing concrete joints, cracks and gaps

    NexusPro®

    NexusPro® is our proprietary, self-leveling polyurethane concrete joint sealer. Professionally applied to prepared joints, it creates a clean, flexible waterproof seal that helps keep water and deicing salts from reaching the soil under driveways, sidewalks, patios, pool decks, garage floors and other concrete surfaces.

    • Self-leveling formula for a smooth, finished look
    • Flexible polyurethane moves with seasonal concrete movement
    • Waterproof barrier stands up to moisture and deicing salts
    • UV-stable to resist cracking, shrinking and deterioration
    • Helps cut down on soil erosion under concrete slabs
    • Backed by an industry-leading transferable warranty
How It Works

Our NexusPro® Concrete Caulking Process

Don’t Wait To Seal Your Concrete Joints

Open joints allow water and deicing salts to reach the soil beneath your concrete. If the slabs are still level, sealing now can help reduce erosion and future settlement. If PolyLevel® lifting is needed, NexusPro® seals the restored joints afterward to help protect the repair.

Common Applications

  • Driveway expansion joints
  • Sidewalk joints and cracks
  • Patio joints
  • Pool deck edge joints
  • Garage floor joints and cracks
  • Front steps and stoop joints
Benefits

Why Homeowners Choose Blackburn Foundation Repair for Concrete Caulking

Concrete joints throughout SD take on repeated expansion, contraction, moisture, deicing salts and freeze-thaw cycles. Blackburn Foundation Repair pairs local concrete repair experience with NexusPro®, a professional-grade sealant built to stay flexible through changing conditions.

Our trained crews carefully prepare every joint, apply the correct amount of material, and hand you a written scope before work begins. NexusPro® also carries a transferable warranty for long-term protection and added peace of mind.

What To Expect

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Frequently Asked Questions

How do I know when concrete joints need recaulking? 2026-10-05T15:49:03-05:00

Concrete joints should be inspected when the existing material has cracked, pulled away from the slab, fallen out or left visible gaps. Open joints should be addressed before wet or freezing weather allows more moisture beneath the concrete. A professional inspection can determine whether the joint needs cleaning, backer rod or new sealant. 

Will concrete caulking stop a slab from sinking? 2026-10-05T15:48:03-05:00

Concrete caulking cannot lift or stabilize a slab that has already settled. It helps protect level or recently lifted concrete by reducing the amount of water and deicing salt entering the joints and soil below. If slabs are already uneven, they should be evaluated for concrete leveling before the joints are sealed. 

Can I caulk concrete myself with tube caulk? 2026-10-05T15:47:33-05:00

You can use hardware-store tube caulk, though general-purpose products may shrink, harden, crack or pull away as concrete moves through seasonal temperature changes. NexusPro® is a professional-grade, self-leveling polyurethane sealant applied over properly prepared joints. For homeowners seeking a cleaner finish and longer-lasting protection, professional concrete caulking is typically the better investment. 

What’s the difference between concrete caulking and concrete sealing? 2026-10-05T15:47:09-05:00

Concrete caulking and surface sealing each protect a different part of the slab. NexusPro® packs joints, cracks and expansion gaps with a flexible, waterproof bead that moves along with the concrete. Concrete sealant penetrates the concrete surface to help protect it from moisture, stains and wear. Together, they protect the openings and the surrounding surface. 

Do I need concrete caulking after PolyLevel® lifting? 2026-10-05T15:46:38-05:00

Usually, yes. PolyLevel® restores the slab, while NexusPro® helps protect the repair by sealing joints and cracks afterward. This helps keep water and deicing salts from readily reaching the soil below, the same conditions that can contribute to settlement. Open joints leave the supporting soil more exposed to future moisture and erosion. 

How long will NexusPro® caulking last? 2026-10-05T15:46:12-05:00

NexusPro® is engineered as a long-term concrete joint seal. Its flexible, self-leveling polyurethane formula stands up to UV exposure, water, deicing salts and repeated freeze-thaw cycles without turning brittle. It is professionally installed and backed by an industry-leading transferable warranty, providing more durable protection than many general-purpose hardware-store caulks. 

What does concrete caulking cost? 2026-11-05T11:32:58-06:00

Concrete caulking is typically priced by the linear foot of joint or crack sealed. Project cost varies based on total footage, joint width, existing caulk removal, and preparation needs. Because joint sealing is preventative maintenance, it often costs far less than dealing with settled or damaged slabs later. Schedule a free written estimate to get exact project pricing. 

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