Foundation Crack Repair Old Bethpage NY

Stop Foundation Cracks Before They Spread

Professional crack injection and structural repairs that actually last, protecting your 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.

Hear About Us

A person wearing a light colored work uniform and helmet is kneeling outdoors, writing on a clipboard, inspecting the exterior of a building near a foundation wall.

Professional Foundation Repair Contractors

What Proper Foundation Repair Actually Does

You get a dry basement that stays dry. No more checking for new water spots after every storm or worrying about that musty smell getting worse.

The cracks stop growing. What starts as a hairline crack can turn into a major structural problem if water keeps getting in and freezing. Professional crack injection stops that cycle completely.

Your home value stays protected. Foundation issues scare buyers and hurt resale value. Proper repairs with documentation show future buyers that the problem was handled right the first time.

Old Bethpage Foundation Repair Specialists

We Know Long Island Foundations

We’ve been handling foundation repairs across Nassau County for years. We understand how Long Island’s clay soil and freeze-thaw cycles affect your foundation differently than other areas.

Most foundation cracks here aren’t structural emergencies, but they do need proper attention before they become bigger problems. We’ve seen what works long-term and what fails after a few seasons.

Our team is licensed and insured in New York, and we warranty our crack injection work because we use professional-grade materials that actually bond with your foundation permanently.

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 Injection Process

Here's Exactly How We Fix It

First, we assess the crack to determine if it’s active or settled. Active cracks need different treatment than ones that have stabilized. This step matters because the wrong approach wastes your money.

We clean out any loose debris and prepare the crack for injection. Then we use professional polyurethane or epoxy injection – not the stuff you buy at Home Depot. The material we use expands slightly as it cures, creating a watertight seal that moves with your foundation.

The injection process takes a few hours for most jobs. We work from the bottom up, ensuring complete fill without air pockets. You can use your basement the same day, and the repair is fully cured within 24 hours.

A person wearing an orange hard hat and yellow gloves crouches down, using a brush to apply material to the base of a concrete wall at a construction site.

Ready to get started?

Explore More Services

About Diamond Masonry & Waterproofing

Get a Free Consultation

Basement Wall Crack Repair Services

What's Included in Every Repair

Every foundation crack repair starts with an honest assessment. We’ll tell you if a crack needs immediate attention or if it’s something you can monitor. No upselling to services you don’t need.

Our crack injection work includes surface preparation, professional-grade injection materials, and cleanup. We also seal any related areas where water might be getting in around the main crack.

You get a warranty on the repair work and documentation for your records. If you’re dealing with insurance or planning to sell, having proper paperwork matters. We also provide maintenance recommendations specific to your foundation type and the local soil conditions here in Old Bethpage.

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.
Most foundation crack injection repairs range from $300 to $800 per crack, depending on length and location. Basement wall cracks are typically less expensive than exterior foundation repairs because they’re easier to access. The cost depends on the crack’s size, whether it’s actively leaking, and what type of injection material works best. We provide upfront pricing after assessing your specific situation – no surprises or hidden fees added later.
Yes, when done properly with professional materials. The polyurethane injection we use expands as it cures, creating a flexible seal that moves with your foundation. This is different from rigid sealers that crack when your foundation shifts slightly with seasonal changes. However, if you have multiple water entry points or drainage issues around your foundation, crack injection alone might not solve everything. We’ll be honest about what you’re dealing with during our assessment.
Professional crack injection repairs should last 10-15 years or longer when done correctly. The key is using the right materials and proper injection technique. DIY crack fillers or cheap sealants typically fail within 1-2 years because they don’t bond properly or handle foundation movement. Our repairs come with a warranty because we use commercial-grade injection materials that are designed to move with your foundation as it naturally settles over time.
Small cracks aren’t usually structural emergencies, but they shouldn’t be ignored either. In Old Bethpage’s climate, even hairline cracks can let water in, and that water can freeze and expand the crack over winter. The crack that’s barely visible today can become a real problem in a few years. It’s much cheaper to seal small cracks now than to deal with water damage or larger structural repairs later. We can assess whether your cracks need immediate attention or just monitoring.
Hardware store crack fillers are temporary solutions at best. They’re designed for minor cosmetic repairs, not structural waterproofing. Most fail within a year or two because they don’t properly bond with concrete or handle foundation movement. Professional injection materials cost more upfront but actually penetrate deep into the crack and create a permanent seal. If you’re dealing with water infiltration or cracks longer than a few inches, DIY approaches usually end up costing more when you have to redo the work properly.
We typically schedule assessments within a few days of your call, and most crack injection repairs can be completed within a week of approval. The actual repair work takes a few hours for most jobs. If you’re dealing with active water infiltration, we prioritize those calls because water damage gets worse quickly. Emergency situations like significant leaking during storms can often be addressed same-day or next-day, depending on weather conditions and our current schedule.