Foundation Crack Repair in Woodmere, NY

Stop Foundation Cracks Before They Spread

Professional crack injection and structural repairs that actually last, protecting your Woodmere home’s value and your peace of mind.

A cracked concrete foundation beneath a brick wall near a downspout, with dry grass, mulch, and a shrub nearby.

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Professional Foundation Repair Contractors

Your Foundation Problems Actually Get Solved

You’re not just patching cracks—you’re getting real structural integrity back. When we finish your foundation crack repair, you can walk into your basement without wondering if that crack got bigger. No more buckets catching drips during heavy rains.

Your home stops settling in ways that create new problems. The foundation repair work we do addresses the actual cause, not just what you can see on the surface. You get a basement you can actually use for storage without worrying about water damage ruining everything you put down there.

Most importantly, you stop losing sleep over whether you’re looking at a thousand-dollar repair or a twenty-thousand-dollar foundation replacement. Our structural integrity repairs give you clarity on exactly what you’re dealing with and a permanent solution that protects your investment.

Woodmere Foundation Repair Specialists

We Actually Know Long Island Foundations

Diamond Masonry & Waterproofing LLC has been fixing foundation problems in Woodmere and throughout Nassau County for years. We understand how Long Island’s clay soil and freeze-thaw cycles affect your home’s foundation differently than other areas.

You’re not getting a generic approach from contractors who treat every foundation the same. We know which cracks in Woodmere homes are serious structural issues and which ones are normal settling that just needs proper sealing.

Our team handles everything from minor basement wall crack repair to major structural integrity repairs. We’ve seen what works long-term in this area and what fails after a few seasons, so you get repairs that actually last through Long Island weather.

A person wearing a white hard hat and work clothes inspects the foundation of a building, closely examining or measuring a crack in the concrete wall near a wooden structure.

Foundation Crack Repair Process

Here's Exactly What We Do

First, we inspect your entire foundation to understand what’s causing the cracks. Not just the obvious ones you can see, but potential problem areas that could become issues later. This assessment tells us whether you’re dealing with normal settling or something more serious.

Next, we prepare the crack properly for permanent repair. This means cleaning out loose material and determining the right repair method—crack injection for structural cracks or specialized sealants for minor settling cracks. The preparation step is what separates lasting repairs from temporary patches.

Finally, we complete the foundation crack repair using professional-grade materials designed for Long Island conditions. You’ll know exactly what we did, why we did it, and what to expect going forward. The repair work comes with warranty coverage because we stand behind the quality of our foundation repair.

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Complete Foundation Crack Solutions

What's Included In Your Repair

Your foundation crack repair includes a complete structural assessment, not just fixing the visible problem. We identify all potential issues so you’re not surprised by new cracks appearing elsewhere. This comprehensive approach prevents the frustration of fixing one crack only to have another appear nearby.

You get professional crack injection using materials specifically chosen for your type of foundation and crack. Whether it’s basement wall crack repair or exterior foundation work, we match the repair method to your specific situation. No cookie-cutter approaches that might work temporarily.

We also provide clear documentation of what we found and what we fixed. You’ll understand exactly what was wrong, how we addressed it, and what signs to watch for in the future. This knowledge helps you maintain your foundation properly and catch any new issues early.

A large vertical crack runs through a concrete foundation wall beneath a wooden structure, with soil, grass, and a black pipe visible at the base.
Any crack wider than a quarter-inch, cracks that are growing, or cracks allowing water infiltration need professional attention. Horizontal cracks are typically more serious than vertical ones, and stair-step cracks in block foundations often indicate settling issues. If you can see daylight through the crack or water comes through during rain, that’s definitely a repair situation. Even smaller cracks should be evaluated because they can expand quickly during freeze-thaw cycles common in the Woodmere area.
Crack injection uses specialized polyurethane or epoxy materials injected directly into the crack under pressure, creating a permanent seal that’s often stronger than the surrounding concrete. Surface patching or caulking only covers the problem temporarily and usually fails within a year or two. Crack injection actually bonds with the foundation material and flexes with normal house movement. For structural cracks, epoxy injection can restore the foundation’s original strength, while polyurethane injection is better for waterproofing non-structural cracks.
Most foundation crack repairs take one day to complete, depending on the number and size of cracks. The actual injection process is relatively quick, but proper preparation and curing time are important for lasting results. You can usually use your basement the same day, though we recommend avoiding heavy vibrations near the repair area for 24 hours. There’s minimal disruption to your daily routine since most work happens in the basement or exterior foundation areas.
Interior basement crack repairs are typically barely noticeable once complete. We clean up excess material and can apply a concrete stain or paint to match your existing basement walls if desired. Exterior foundation repairs are usually below grade and not visible once backfilled. For above-grade exterior cracks, we take care to match the existing foundation appearance as closely as possible. The goal is a repair that protects your home without creating an eyesore.
We provide warranty coverage on our foundation crack repair work because we use professional-grade materials and proven techniques. The specific warranty terms depend on the type of repair and materials used, but we stand behind our workmanship. If a properly repaired crack fails due to our work, we’ll return to address it at no charge. However, new cracks in different areas aren’t covered since they represent separate foundation issues, not failure of our repair work.
Foundation crack repair costs vary based on the crack size, location, and repair method needed. Simple crack injection for minor basement wall cracks typically costs less than major structural repairs requiring extensive preparation. We provide upfront pricing after assessing your specific situation, so you know exactly what you’re paying for. Most homeowners find that professional crack repair costs significantly less than dealing with water damage or major foundation problems that develop when small cracks are ignored.