When your hangar floor is done right, you stop thinking about it. No more peeling edges after a wet winter. No more dark stains where Skydrol or jet fuel hit the concrete. No more squinting under hangar lighting trying to spot a dropped bolt or a slow fluid leak. A properly coated floor reflects light, resists chemicals, and stays intact through years of real use not just the first season.
Hempstead’s climate makes this more critical than most people realize. Nassau County sits close enough to the South Shore that humidity regularly climbs above 80%, and that moisture doesn’t just affect comfort it works its way through concrete slabs from below. If we skip moisture testing before coating, that moisture becomes a blister, and that blister becomes a delamination. It’s the most common reason hangar floors fail in this area, and it’s entirely preventable.
The freeze-thaw cycle compounds the problem. Concrete slabs that absorb moisture through a humid summer are under real stress when temperatures drop into the mid-20s in January. An aviation-grade system properly prepped, properly primed, properly topcoated handles that cycling without cracking or lifting. A standard commercial product doesn’t, and most facility managers find that out the hard way.
We’re based in Bohemia, just a short drive from Hempstead Suffolk County which means we know Long Island’s climate, its building stock, and its aviation community firsthand. We’ve been installing specialty floors for over 30 years, and the person quoting your job has personally installed floors for over 40. That’s not a company bio line it means when we tell you why a floor failed or what prep work your slab actually needs, it comes from experience, not a product sheet.
We’ve worked in demanding environments across the country and internationally, including a floor installation at the White House in 1996. We hold dual elite certifications from Sherwin-Williams High Performance Flooring and Res Tech, and every installer on our crew carries OSHA 40 certification not just the project manager. Most of our team has been with us for over a decade, so you get the same experienced hands on your Hempstead-area hangar job that we’ve sent to every other project for years.
The first thing we do isn’t coating it’s assessment. Before anything else, we test the concrete slab for moisture vapor transmission. In Nassau County’s coastal environment, this step is non-negotiable. Humidity above 80% is normal here, and a slab that looks dry on the surface can be actively transmitting moisture from below. Coating over that without testing is the single most common reason hangar floors delaminate within a year. We don’t skip it.
Once moisture is assessed and the slab is cleared, we grind the concrete to open the surface profile and ensure proper adhesion. Any cracks, spalls, or surface defects get addressed before the primer goes down because a coating system is only as good as the substrate underneath it. From there, the process is layered: primer, base coat, and topcoat, each selected based on your facility’s actual traffic load, chemical exposure, and operational requirements. This isn’t a one-product job.
For active hangars that can’t sit idle for a week, our polyaspartic systems return to service in about 24 hours. If your facility near Republic Airport is running regular operations, that turnaround matters. The final topcoat is high-gloss and light-reflective typically white or light gray which isn’t just an aesthetic choice. In a working hangar, a bright floor makes dropped tools, FOD, and fluid spills immediately visible. That’s a real safety function, not a finishing touch.
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Standard commercial epoxy isn’t formulated for what happens inside an aircraft hangar. Skydrol hydraulic fluid one of the most common fluids in aviation maintenance attacks standard coatings aggressively. Jet fuel, lubricants, and aviation-grade cleaning solvents do the same. The systems we install are specifically engineered for that chemical environment, not adapted from a product line designed for warehouses or restaurant kitchens.
Every hangar floor system we install also meets NFPA 409, the standard that governs aircraft hangar floor surfaces in New York. It requires that floors in aircraft storage and servicing areas be noncombustible a requirement that eliminates a wide range of products that general flooring contractors routinely use. Nassau County fire codes incorporate this standard, and a facility that doesn’t meet it is a code violation waiting to surface during an inspection. We know the standard, we install to it, and we can walk you through exactly what it means for your facility before work begins.
Our non-slip topcoat meets National Flooring Safety Institute requirements, which matters in any hangar where fuel and fluid spills are routine. Whether you’re operating a private aircraft storage facility, a corporate flight department, or a maintenance bay in the Hempstead area, the system we specify is matched to what your floor will actually face not a default package applied to every job.
Yes and most flooring contractors you’ll talk to have never heard of it. NFPA 409 is the standard that governs aircraft hangars in the United States, and it specifically requires that the floor surface in aircraft storage and servicing areas be noncombustible. Nassau County building and fire codes incorporate NFPA standards by reference, which means this isn’t a suggestion it’s a code requirement that applies to commercial hangar facilities in the Hempstead area.
The practical issue is that many standard commercial epoxy products don’t meet this requirement. A general flooring contractor who installs warehouse floors or garage coatings may not know the difference, and the facility owner ends up with a code violation they didn’t see coming. We install systems that comply with NFPA 409, and we explain exactly what that means for your specific facility before the first coat goes down. If you’re not sure whether your current floor meets the standard, that’s a conversation worth having before your next inspection.
Skydrol is a phosphate ester-based hydraulic fluid, and it’s unusually aggressive toward standard coatings. It breaks down the binder in generic epoxy systems, causing softening, discoloration, and eventually surface failure. The same goes for jet fuel and many of the solvent-based cleaners used in aircraft maintenance environments. A floor that looks fine after installation can start showing damage within months if the coating chemistry isn’t matched to the actual chemical exposure.
Aviation-grade epoxy systems use high-build, chemically resistant formulations typically 100% solids epoxy or polyaspartic systems that are specifically tested against the chemicals found in hangar environments. The Sherwin-Williams High Performance Flooring systems we install are engineered for exactly this kind of exposure. The difference isn’t just durability it’s also safety. A floor that’s been chemically degraded by Skydrol becomes slippery and harder to clean, which creates real hazards in an active maintenance environment. Specifying the right system from the start prevents all of that.
It’s one of the most underestimated factors in this region. Hempstead and the broader Nassau County area sit close enough to the South Shore and the Atlantic that humidity regularly exceeds 80% and that moisture doesn’t just sit in the air. It migrates through concrete slabs from the ground below, a process called moisture vapor transmission. If a coating is applied over a slab with high moisture content without proper assessment and mitigation, the moisture has nowhere to go but up and it pushes the coating off the concrete from underneath. That’s what causes blistering and delamination.
The freeze-thaw cycle in Nassau County winters adds another layer. Concrete that’s absorbed moisture during a humid summer expands and contracts as temperatures drop below freezing, and coatings that weren’t applied over properly prepped, moisture-assessed slabs crack and lift. We test every slab for moisture vapor before we coat it not as an optional add-on, but as a standard part of every job. In Long Island’s coastal climate, it’s the difference between a floor that lasts and one that fails before the first winter is out.
Yes, the aircraft need to be out of the hangar during installation there’s no way around that. The concrete grinding process generates dust, and the coating materials require a clean, controlled environment to cure properly. Trying to work around parked aircraft creates adhesion problems and safety hazards, so the hangar needs to be cleared before we start.
As for timing, it depends on the system. Traditional epoxy systems typically require 3 to 5 days from prep through final cure before you can return aircraft to the floor. Our polyaspartic systems move significantly faster most installations are ready for aircraft return within 24 hours of the final topcoat. For active facilities near Republic Airport or anywhere in the Nassau County area where the hangar is in regular use, that difference is real money. We walk through the timeline in detail before the job starts so you can plan around it no surprises on day three.
A bare epoxy floor with a high-gloss finish can get slippery when wet that’s a legitimate concern in any hangar where fuel, oil, or hydraulic fluid spills are part of the normal operating environment. It’s also an OSHA concern: slip-and-fall incidents in maintenance environments are one of the most common workplace injuries, and a facility that hasn’t addressed floor slip resistance is carrying real liability exposure.
The solution is in the topcoat. Our non-slip topcoat formulation meets National Flooring Safety Institute requirements, which means it’s been independently tested not just described as “slip-resistant” in a brochure. The aggregate broadcast into the topcoat creates traction even under contaminated conditions. Combined with the high-gloss, light-reflective base that makes fluid spills visible in the first place, the result is a floor that’s both safer to work on and easier to clean. For anyone running an active maintenance operation in the Hempstead area, that combination matters more than it might seem on paper.
The honest answer is accountability and local knowledge. A national brand routes your inquiry through a call center, assigns a regional rep who may or may not have aviation flooring experience, and subcontracts the actual installation to whoever is available in your area. If something goes wrong a delamination, a warranty question, a missed moisture issue you’re navigating a corporate chain to get it resolved.
With Advanced Epoxy Flooring, you’re working with a Bohemia-based company that has been doing this on Long Island for over 30 years. We know Nassau County’s humidity profile. We know what freeze-thaw cycling does to slabs in this region. We know the local code environment. And when you call after the job is done, you’re talking to the same people who installed the floor. For a facility in the Hempstead area whether it’s a private hangar, a corporate flight operation, or a maintenance bay that local accountability is worth more than a national name on a business card.
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