TPO/PVC Commercial Flat Roofing: Complete Guide for Long Island & NY Buildings

Commercial Roofing Solutions for Local Businesses

Flat Roofing Services Designed for NY Businesses

Commercial flat roofs require specialized materials and installation techniques to withstand Long Island’s harsh weather conditions.

Single-ply membrane systems like TPO and PVC have become the industry standard for commercial buildings because they deliver superior waterproofing, energy efficiency, and longevity.

County Roofing Systems has installed thousands of TPO and PVC roofs on commercial properties throughout Long Island and Westchester County. We’re certified installers for premium manufacturers including Firestone, Carlisle, GAF, and CertainTeed.

Our expertise ensures your flat roof will protect your building for 20-30 years. We follow manufacturer specifications precisely to qualify you for the best warranties available.

Understanding the differences between roofing materials helps property owners make informed decisions. TPO and PVC each offer distinct advantages for commercial applications.

Read on to learn both flat roof systems, their benefits, and how to select the right solution for your Long Island or NY commercial property.

50-Year Material, 25-Year Labor Guarantee

We’ve met the toughest requirements in the residential roofing industry- and we use only the best materials.

That’s why we stand behind our work with the best guarantee in the industry– including warranties only 2% of roofing companies can offer.

Your house deserves the best roofing warranty on the market. Give us a call today and get a brand new roof with a 50-year material, 25-year labor warranty from the best roofing contractor in Long Island and New York.

Why Choose County Roofing?

Here’s why Long Island and NYC Businesses chooses us.

We're certified installers of premium commercial roofing systems

Our team holds manufacturer certifications from industry leaders including GAF, CertainTeed, Firestone, and Carlisle. These certifications give you access to extended warranties that protect your investment. More importantly, they prove our installers follow strict quality standards.

Our commercial roofing projects are completed on time and within budget

We provide detailed project timelines before work begins. Our crews show up when scheduled and complete installations efficiently. We understand that delays cost you money in lost productivity and disrupted operations.

We handle all permits, inspections, and code compliance

Nassau County, Suffolk County, and Westchester County each have specific building codes for commercial roofing. We know these regulations and ensure your project meets all requirements. You won't face fines or failed inspections when County Roofing handles your commercial flat roof installation.

Roofing Services

When They Need a Qualified Roofer- Long Island and NY Businesses Rely on County Roofing

Exceptional Workmanship, Lasting Results

Single-ply membrane roofing systems revolutionized commercial roofing over the past three decades. These lightweight, durable materials outperform traditional built-up roofing in nearly every category. Both TPO and PVC create watertight barriers that protect commercial buildings from severe weather.

County Roofing Systems has over 35 years of experience installing commercial flat roofing systems throughout Long Island and Westchester County. We’re not a national franchise that treats every building the same. We’re local roofing contractors who understand the specific challenges facing commercial properties in our region.

Designed for Long Island and NYC's Unique Climate

TPO (thermoplastic polyolefin) roofing has become the most popular choice for commercial flat roofs across Long Island. White TPO membranes reflect solar radiation, keeping buildings cooler during summer months. This reduces air conditioning costs by 20-30% compared to dark-colored roofing materials.

TPO membranes resist UV damage, ozone exposure, and chemical contact. They perform well in coastal environments where salt air corrodes traditional roofing materials. Heat-welded seams create bonds stronger than the membrane itself, ensuring watertight performance even during severe storms.

Manufacturers produce TPO in various thicknesses ranging from 45 mil to 80 mil. Thicker membranes cost more but provide enhanced puncture resistance and longevity. For Long Island commercial buildings, we typically recommend 60 mil TPO for optimal durability and value.

Professional Roof Replacement

Eventually every commercial flat roof needs replacement. Property owners should plan replacement when roofs reach 20-25 years old, even if no major leaks have occurred. Aging membranes become brittle and lose their waterproofing capabilities.

Our roof replacement process begins with thorough deck inspection. We identify rotted insulation, damaged roof decking, and structural issues before installing new roofing materials. This comprehensive approach ensures your new TPO or PVC roof will perform optimally for decades.

We install tapered insulation systems that eliminate ponding water. Flat roofs need subtle slopes (1/4 inch per foot minimum) to direct water toward drains. Tapered polyiso insulation creates these slopes while providing superior thermal performance.

Replacement projects are completed efficiently to minimize business disruption. Our crews work in sections, maintaining building functionality throughout the installation. Most commercial flat roof replacements are completed within 1-2 weeks depending on building size.

PVC Commercial Roofing Installation

PVC (polyvinyl chloride) roofing offers premium performance for commercial buildings with demanding requirements. PVC membranes excel in environments with exposure to chemicals, grease, or heavy rooftop traffic. Restaurant roofs, manufacturing facilities, and healthcare buildings often benefit from PVC’s superior resistance properties.

Like TPO, PVC membranes use heat-welded seams that create permanent watertight bonds. PVC remains flexible in cold temperatures, making it ideal for Long Island’s harsh winters. The material won’t crack or become brittle even during extreme cold snaps.

PVC roofing costs 10-20% more than TPO but provides exceptional longevity. Many PVC roofs last 30+ years with proper maintenance. The material’s proven track record makes it a smart investment for property owners planning long-term ownership.

Commercial Flat Roof Repair and Maintenance

Even the best commercial flat roofs eventually need repairs. Punctures from rooftop equipment, storm damage, and normal wear all require prompt attention. County Roofing Systems provides expert TPO and PVC roof repair services throughout Long Island and the greater New York area.

Small membrane tears and punctures can be patched quickly using heat-welded patches. Our repair technicians carry specialty equipment to create permanent bonds between patch material and existing membranes. These repairs blend seamlessly with surrounding roofing and restore waterproof integrity.

Seam failures require more extensive repair work. We cut out damaged sections, properly prepare surfaces, and install new membrane with heat-welded seams. Our repair crews follow the same quality standards used for new installations.

Regular maintenance prevents many repair issues. Our M4 Commercial Roof Maintenance Plan includes bi-annual inspections that identify minor problems before they become major leaks. We clear debris, clean drains, and inspect flashings during every maintenance visit.

0% Financing, Quick and Easy Approval

With nearly four decades serving homeowners under our belt, we know what’s needed to make your roofing project a success.

When you work with County Roofing, you get only the best. As little as 0% interest on approval for 5 years, quick approval, easy pay, and all backed by the best guarantees in the industry.

TPO vs PVC: Choosing the Right System for Your Building

Flat Roofing Systems by County Roofing

Both TPO and PVC provide excellent performance for commercial flat roofs. Understanding their differences helps you select the best system for your specific building and budget requirements.

These aren’t interchangeable materials with minor variations. Each has distinct performance characteristics that matter for different applications.

Cost Considerations

TPO roofing typically costs $5-8 per square foot installed, including materials, labor, and disposal. PVC roofing costs $6-10 per square foot for comparable installations.

For a 10,000 square foot commercial building, that’s a $10,000-20,000 price difference. This cost gap matters when budgets are tight.

However, cost comparisons should consider long-term value rather than just initial installation prices. PVC’s superior longevity and lower maintenance requirements often make it more cost-effective over 30+ years.

TPO provides excellent value for buildings where 20-25 year roof life spans are acceptable. You’ll spend less upfront and still get reliable performance.

Warranty coverage also affects overall value. Both systems qualify for manufacturer warranties ranging from 10-30 years. NDL (No Dollar Limit) warranties covering materials and labor provide the best protection but require certified installers and premium materials.

Performance in Challenging Environments

PVC outperforms TPO in environments with chemical exposure, grease, or animal fats. Restaurant roofs, food processing facilities, and manufacturing plants benefit from PVC’s superior chemical resistance.

The material maintains its integrity even with regular exposure to harsh substances. TPO can degrade when certain chemicals contact the membrane.

TPO performs better in extremely hot climates where ozone exposure is high. The material resists ozone degradation that can affect some PVC formulations.

For Long Island’s moderate climate, both materials perform well regarding ozone resistance. This isn’t typically a deciding factor for our region.

Both systems handle foot traffic reasonably well, but PVC shows better resistance to punctures from sharp objects. Buildings requiring frequent rooftop access for equipment maintenance may benefit from PVC’s enhanced durability.

Installation Complexity

Skilled installers can work with both TPO and PVC efficiently. Heat-welding techniques are similar for both materials.

However, PVC requires slightly higher welding temperatures and more precise technique. This demands experienced crews who understand the material’s characteristics.

TPO’s wider seams (typically 3-4 inches) provide more margin for error during installation. PVC seams are narrower (2-3 inches) and demand greater precision.

This doesn’t make PVC installations inferior, but it does require experienced crews. Inexperienced installers make more mistakes with PVC.

County Roofing Systems maintains manufacturer certifications for both TPO and PVC systems. Our installers receive ongoing training on proper welding techniques, material handling, and quality control. This expertise ensures optimal performance regardless of which system you choose.

Installation Process and Quality Control

Discover the County Roofing difference.

Proper installation determines whether a commercial flat roof performs as designed. County Roofing Systems follows manufacturer specifications precisely and implements rigorous quality control throughout every project.

Cutting corners during installation voids warranties and creates future problems. We invest the time necessary to do the job right.

Surface Preparation

We begin every installation with thorough deck inspection and preparation. Roof decks must be clean, dry, and structurally sound before membrane installation. For built-up roofing systems, we use roofing felts as reinforcing fabrics layered with bitumen to create a durable roofing membrane.

We repair damaged decking, secure loose fasteners, and ensure proper slopes for drainage. This foundation work prevents future failures.

Existing roof tear-offs generate substantial debris. Our crews use containment systems that prevent materials from damaging property or creating safety hazards. We schedule debris removal to maintain site cleanliness throughout the project.

After tear-offs, we inspect roof decks carefully. Water-damaged areas are identified and repaired. This comprehensive approach prevents future problems caused by underlying structural issues.

Insulation Installation

Insulation boards are mechanically fastened or adhered to roof decks using manufacturer-approved methods. We install tapered insulation systems that create positive drainage toward roof drains and scuppers.

Proper fastening prevents wind uplift damage during severe storms. Long Island experiences hurricane-force winds that can tear poorly fastened roofing materials from buildings.

Metal roofing systems, which use metal panels as their primary material, are known for their longevity and can last 30 years or longer with proper maintenance, making them a durable and low-maintenance option for commercial flat roofing.

Our installations meet or exceed wind uplift ratings required by local building codes. This attention to detail protects your building during severe weather.

We stagger insulation board joints to prevent thermal bridging. Multiple insulation layers are installed with offset seams. This creates a continuous thermal barrier without weak points where heat can escape.

Membrane Installation and Seam Welding

TPO and PVC membranes are rolled out across insulation and mechanically fastened or fully adhered. Mechanical attachment uses specialized fasteners and plates designed for specific membrane types.

Fully adhered systems use bonding adhesive for maximum wind uplift resistance. The installation method depends on your building’s wind exposure and local code requirements.

Seam welding is the most critical installation step. Our technicians use automated hot-air welders that maintain precise temperatures.

Welds are tested using probe tools that verify bond integrity. Every seam must pass quality testing before installation proceeds.

Penetrations for vents, HVAC equipment, and drains receive special attention. We install manufacturer-approved boots, pitch pans, and curb flashing systems. These details prevent water infiltration around rooftop equipment.

Final Inspection and Testing

Before considering projects complete, we conduct comprehensive final inspections. Every seam is tested. All penetrations are verified watertight.

Drainage systems are checked for proper flow. We won’t consider a job complete until water flows correctly to all drains.

We provide property owners with detailed installation documentation. This includes photos of critical installation steps, material certifications, and warranty paperwork. These records are essential for warranty claims and future roof maintenance.

Our quality control process ensures your TPO or PVC roof will perform as designed. We don’t cut corners or rush installations. Your building deserves roofing systems installed to the highest industry standards.

Benefits of Flat Roofing: Insulation and Energy Efficiency

Installed by County Roofing

Commercial flat roof insulation significantly impacts building energy consumption. Proper insulation keeps buildings cooler in summer and warmer in winter, reducing HVAC costs year-round.

The right insulation system can cut your energy bills by 20-30%. These savings continue for the entire life of your roof.

Polyiso Insulation Benefits

Polyisocyanurate (polyiso) insulation provides the highest R-value per inch of any common roofing insulation. A 2-inch layer of polyiso delivers R-12 to R-13 thermal resistance.

This superior performance allows effective insulation without excessive roof height. You get better energy efficiency without raising your building profile.

Polyiso boards are lightweight and easy to install. They resist moisture absorption better than fiberglass insulation.

When properly installed with tapered systems, polyiso creates drainage slopes that prevent ponding water. This dual benefit improves both energy efficiency and water management.

We install polyiso insulation in multiple layers with staggered joints. This prevents thermal bridging where heat escapes through seams. The result is consistent thermal performance across the entire roof surface.

Cool Roof Technology

White TPO and PVC membranes qualify as cool roofs under Energy Star and Cool Roof Rating Council standards. These reflective surfaces reduce solar heat gain by 60-80% compared to dark roofing materials.

Cool roofs lower interior temperatures by 10-15°F during summer months. This reduces air conditioning loads significantly, cutting cooling costs by 20-30%.

The energy savings compound year after year, providing excellent ROI. A $20,000 investment in cool roofing might save $4,000-6,000 annually on utilities.

Many utility companies offer rebates for cool roof installations. Combined with federal tax incentives for energy-efficient improvements, these programs can offset 15-25% of project costs. We help property owners identify and apply for available incentive programs.

Reducing Urban Heat Islands

Reflective roofing systems don’t just save individual building owners money. They also reduce urban heat island effects that make cities hotter than surrounding areas.

This environmental benefit matters for Long Island communities working toward sustainability goals. Lower ambient temperatures reduce strain on electrical grids during summer peaks.

Some municipalities offer expedited permitting or reduced fees for cool roof installations. These local incentives recognize the broader community benefits of energy-efficient roofing choices.

Long Island and NYC's Go-To Roofing Contractor

Keith Schmied has built his reputation on delivering exceptional commercial roofing services throughout Long Island and the greater New York area.

For over 35 years, he’s led County Roofing Systems as the region’s most trusted commercial roofing contractor.

Keith’s experience spans hundreds of commercial projects. He’s installed roofs on office buildings, warehouses, multi-family properties, and hospitality facilities from Manhattan to Montauk.

County Roofing Systems holds elite manufacturer certifications from GAF, CertainTeed, Firestone, and other industry leaders.

These certifications aren’t easy to earn. Only the top 1% of roofing companies qualify. This distinction gives our clients access to the best warranties and materials available.

We’re also a local, family-owned business. Keith lives and works in the communities we serve. He understands Long Island and NYC’s weather patterns, building codes, and business climate.

When you hire County Roofing Systems, you’re working with neighbors who care about our region’s commercial properties. We have a vested interest in protecting buildings where we live and work.

Our commercial roofing crews are experienced professionals as well, not subcontractors. Every installer is a member of the County Roofing Systems team and they receive ongoing training on the latest materials and techniques.

This ensures consistent quality across every project. You won’t get different crews with varying skill levels.

Finally, we stand behind our work with industry-leading warranties. Manufacturer warranties protect against material defects for 15-30 years. Our workmanship warranties guarantee proper installation.

Keith and his team have protected Long Island businesses for over three decades. We’ve built our reputation one roof at a time, and we’re committed to maintaining the highest standards in the commercial roofing industry.

When your property needs roofing services, County Roofing Systems delivers the expertise and reliability you deserve.

Click below or call us today for a free estimate to get started on your commercial roofing project today:

Fast & Easy Financing with County Roofing

Financing your commercial roofing project has never been easier.

With County Roofing, you can get fast approvals with as low as 0% financing on new roofing projects for up to 15 years, with payments as low as $149:

First Approvals
0% financing
No income check
Up to 15 years
Monthly payments as low as $149

Fill out the form below or give us a call at (631) 400-7663 today to get started:

Call or contact us today for your free commercial roofing services estimate.