Foundation Crack Repair in Islip Terrace, NY

Stop Foundation Cracks Before They Spread

Permanent crack injection repairs that protect your home’s structural integrity and prevent water damage.

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Professional Foundation Repair Contractors

Your Foundation Problems Actually Get Fixed

You’re not looking for a band-aid solution. You want those foundation cracks sealed permanently so you can stop worrying about water in your basement every time it rains.

That’s exactly what happens when foundation crack repair is done right. The cracks get filled with professional-grade materials that move with your foundation instead of cracking again in six months.

Your basement stays dry. Your foundation stays structurally sound. And you get back to using that space instead of watching it for new problems.

Islip Terrace Foundation Specialists

We Know Long Island Foundations

We’ve been fixing foundation problems in Islip Terrace and throughout Long Island for years. We understand how the sandy soil conditions here cause foundation movement and why certain types of cracks keep coming back.

Most contractors treat every crack the same way. We don’t. We look at your specific foundation type, the soil conditions around your home, and what’s actually causing the problem.

That’s why our foundation crack repairs last while others fail.

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Foundation Crack Injection Process

Here's How We Fix Foundation Cracks

First, we inspect your foundation to determine what type of cracks you’re dealing with and what’s causing them. Not all foundation cracks are the same, and the repair method depends on whether they’re structural or just settling cracks.

For most basement wall cracks, we use professional crack injection. This involves drilling small ports along the crack and injecting high-pressure polyurethane or epoxy that fills the entire crack from inside the wall. The material cures to form a waterproof seal that’s actually stronger than the surrounding concrete.

For structural cracks or more complex foundation issues, we may recommend additional reinforcement methods. We’ll explain exactly what your foundation needs and why, so you understand what you’re paying for.

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Complete Foundation Repair Services

What's Included in Foundation Crack Repair

Every foundation crack repair starts with a thorough assessment of your foundation’s condition. We identify all existing cracks, determine their cause, and check for any structural concerns that need attention.

The repair process includes professional crack injection using commercial-grade materials designed for Long Island’s soil conditions. We don’t use hardware store crack fillers that fail in a year or two.

For basement wall crack repair, we also address any drainage issues that might be putting extra pressure on your foundation. Sometimes fixing the crack isn’t enough if water is still building up against your foundation walls.

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 that’s allowing water into your basement needs immediate attention, regardless of size. For dry cracks, look for signs they’re growing – take a photo and check it again in a few weeks. Horizontal cracks or cracks wider than a quarter-inch typically indicate structural issues that shouldn’t wait. If you’re seeing multiple new cracks or cracks that seem to be expanding, have them evaluated quickly. Even small cracks can become major problems during freeze-thaw cycles common in New York winters.
Crack injection fills the entire crack from inside the foundation wall using high-pressure equipment and professional-grade materials. This creates a permanent seal that moves with your foundation. Surface patching or crack fillers only cover the visible part of the crack and typically fail within a year or two. Crack injection costs more upfront but actually fixes the problem instead of just hiding it. The injected material bonds with the concrete and creates a waterproof barrier that’s stronger than the original foundation.
Most foundation crack repairs can be completed in one day, depending on how many cracks need attention. The actual injection process is relatively quick – it’s the preparation and curing time that takes longer. We work from inside your basement, so there’s no excavation around your home’s exterior. You’ll need to clear access to the foundation walls, but the work doesn’t require you to leave your home. The injected materials typically cure within 24-48 hours, and you can use your basement normally during that time.
Foundation crack repair eliminates water entry through those specific cracks, but it doesn’t address other potential water sources like poor drainage or hydrostatic pressure. If water is only entering through foundation cracks, then crack injection will solve your water problems. However, if you have broader basement moisture issues, you might need additional waterproofing measures. During our assessment, we’ll identify all potential water entry points and recommend the most cost-effective approach to keep your basement dry long-term.
Foundation crack repair costs depend on the number of cracks, their length, and accessibility. Most homeowners in Islip Terrace spend between $400-800 per crack for professional injection repair. While this seems expensive compared to DIY crack fillers, it’s significantly less than dealing with ongoing water damage or major structural repairs later. We provide detailed estimates that break down exactly what you’re paying for, including materials, labor, and any prep work needed to access the cracks properly.
Yes, our foundation crack injection repairs come with a warranty against water penetration through the repaired cracks. The specific warranty terms depend on the type of crack and repair method used, but we stand behind our work. If a properly repaired crack starts leaking again due to our workmanship, we’ll fix it at no charge. However, new cracks that develop elsewhere in your foundation aren’t covered – those would be separate issues. We’ll explain the warranty coverage for your specific situation before starting any work.