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Your building stays bone dry through Long Island’s harshest storms. No more scrambling for tarps when the forecast shows rain. No more explaining water damage to insurance adjusters.
You get 20-30 years of reliable protection with properly installed TPO, EPDM, or modified bitumen systems designed specifically for Garden City’s freeze-thaw cycles, heavy snow loads, and coastal salt exposure. Your energy bills drop because these systems provide superior insulation compared to patched-up alternatives.
Most importantly, you sleep better knowing your roof actually works when it needs to. That’s what professional flat roofing delivers—peace of mind backed by materials and installation methods that handle everything Mother Nature throws at your Garden City property.
Expressway Roofing and Chimney Inc has been solving flat roof problems throughout Garden City and Nassau County for over two decades. We understand how this area’s unique weather patterns—from nor’easters to summer heat waves—affect flat roofing systems differently than other regions.
Garden City’s affluent neighborhoods demand quality work that lasts, and that’s exactly what we deliver. We’ve worked on everything from historic brownstones near the village center to modern commercial buildings around Roosevelt Field, always using the right materials and proven installation techniques.
Our local expertise means we know which drainage solutions work best for Garden City’s soil conditions, which membrane materials hold up longest against salt air from the coast, and how to properly insulate for the area’s temperature extremes. When you hire us, you’re getting contractors who truly understand your specific roofing challenges.
First, we perform a thorough inspection to identify the real problem—not just the obvious symptoms. Many flat roof issues stem from poor drainage design or inadequate insulation, so we examine everything from deck condition to current membrane integrity.
Next, we remove damaged materials completely. Half-measures don’t work with flat roofing. If the substrate is compromised, we replace it. If insulation is waterlogged, it gets torn out and replaced with proper R-value materials for Garden City’s climate.
Then comes installation using commercial-grade TPO, EPDM, or modified bitumen membranes. We heat-weld seams for TPO systems or properly adhere EPDM using manufacturer-approved methods. Every penetration gets sealed with appropriate flashing materials designed for Long Island weather conditions.
Finally, we test the entire system before calling it complete. Water testing ensures proper drainage flow, and we verify all seams are watertight. You get documentation showing exactly what was done and warranty coverage that actually means something.
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Garden City’s weather demands specific flat roofing solutions that many contractors don’t fully understand. We use TPO membranes for their superior heat-welded seams and energy efficiency—perfect for buildings that need to handle both summer heat and winter snow loads without compromising structural integrity.
EPDM rubber roofing works exceptionally well for Garden City properties because it remains flexible through freeze-thaw cycles while resisting the UV degradation common in coastal areas. Modified bitumen systems provide excellent puncture resistance for roofs with foot traffic or equipment installations.
All our installations include proper insulation rated for Nassau County’s climate zone, ensuring energy efficiency and preventing condensation issues that plague poorly designed flat roof systems. We also install advanced drainage components specifically engineered to handle the heavy rainfall and rapid snowmelt conditions typical in this area.
Every material we use carries manufacturer warranties, and our installation methods follow strict industry standards proven effective in Long Island’s challenging environment. This isn’t generic flat roofing—it’s engineered specifically for what your Garden City property faces year-round.
Properly installed flat roofs in Garden City typically last 20-30 years, depending on the material and maintenance quality. TPO and EPDM systems handle our freeze-thaw cycles well when installed correctly with adequate insulation and proper drainage.
The key is using materials rated for Long Island’s specific challenges—salt air exposure, heavy snow loads, and temperature swings from single digits to 90+ degrees. Cheaper installations might fail within 5-10 years, but commercial-grade membranes with professional installation provide decades of reliable service.
Regular maintenance extends lifespan significantly. Annual inspections catch small issues before they become expensive problems, especially after severe weather events common in our area.
Poor drainage is the primary culprit. Unlike pitched roofs that shed water naturally, flat roofs require engineered drainage systems to prevent ponding. When water sits for more than 24-48 hours, it finds ways through even small membrane imperfections.
Failed seams are another common cause, especially with improperly installed systems. Heat-welded TPO seams are far more reliable than glued connections, which is why we prefer TPO for most Garden City installations. Penetration flashing around vents, HVAC units, and roof drains also frequently fails when not properly sealed.
The solution involves comprehensive membrane replacement with proper slope correction, not just patching visible problems. Band-aid repairs rarely work long-term because the underlying drainage issues remain unresolved.
If repair costs exceed 50% of replacement cost, replacement makes more financial sense. Multiple leak areas, membrane that’s over 15 years old, or widespread bubbling and cracking typically indicate replacement time.
However, isolated damage from recent storms or equipment installation might be repairable if the overall membrane condition is good. We perform thorough inspections to determine the true extent of problems—sometimes issues that appear minor on the surface indicate systemic failures requiring complete replacement.
Age matters significantly. A 10-year-old roof with localized damage might be worth repairing, but a 20-year-old roof with similar issues probably needs replacement to avoid ongoing problems and repeated repair costs.
Flat roof replacement in Garden City typically costs $4-12 per square foot installed, depending on material choice and complexity. A 1,000 square foot roof might cost $6,000-15,000 including proper insulation and drainage improvements.
TPO systems generally cost less than EPDM but offer excellent performance for most applications. Modified bitumen costs more but provides superior puncture resistance for high-traffic roofs. These prices include tear-off of existing materials, new insulation, and proper flashing—not just membrane replacement.
Complex roofs with multiple penetrations, equipment, or accessibility challenges cost more. However, investing in quality installation saves money long-term by avoiding repeated repairs and energy waste from poorly insulated systems.
TPO uses heat-welded seams that create stronger, more reliable connections than EPDM’s glued seams. TPO’s white surface also reflects heat better, reducing cooling costs during Garden City’s hot summers. It’s generally our preferred choice for most residential and commercial applications.
EPDM offers superior flexibility and comes in larger sheets, reducing the number of seams needed. It’s excellent for irregularly shaped roofs or areas where heat welding isn’t practical. EPDM also costs slightly less than TPO for materials, though installation costs are similar.
Both materials handle Long Island weather well when properly installed. Your choice depends on specific roof conditions, energy efficiency priorities, and budget considerations. We’ll recommend the best option based on your particular situation and building requirements.
Yes, we handle both residential and commercial flat roofing throughout Garden City and Nassau County. Commercial projects require specialized expertise because of larger surface areas, complex drainage systems, and equipment installations that residential roofers often can’t handle properly.
We’re experienced with commercial-grade TPO and EPDM systems, modified bitumen installations, and the specialized flashing required around HVAC equipment, exhaust fans, and other roof penetrations common on commercial buildings. Our work meets all local building codes and manufacturer specifications.
Commercial flat roofs also require different maintenance approaches and warranty considerations. We provide comprehensive service agreements to keep your commercial roof performing optimally throughout its lifespan, minimizing business disruptions from unexpected leaks or failures.
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