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📐 Flat Roofing

Flat & Low-Slope Roofing
in Ocean County, NJ

Leak-free flat roofing. TPO, EPDM, & Modified Bitumen. Free inspection.

Get Free Inspection 📞 (609) 204-3706
Flat Roofing Systems

Three Proven Systems for Flat & Low-Slope Roofs

The right flat roofing system depends on your building type, budget, drainage setup, and roof use. We install all three major systems and will recommend the right one after a thorough assessment — not based on what's cheapest or fastest for us.

TPO Membrane

Thermoplastic Polyolefin is the most widely installed flat roofing membrane in North America. Its white reflective surface is energy-star rated, reducing rooftop temperatures by up to 50°F and cooling costs by 20–30%. Heat-welded seams create bonds stronger than the membrane itself.

  • ✔ Energy Star rated — reduces cooling costs
  • ✔ Heat-welded seams — superior bond
  • ✔ Puncture and chemical resistant
  • ✔ 15–25 year lifespan

EPDM Rubber Roofing

Ethylene Propylene Diene Monomer is a synthetic rubber membrane with one of the longest track records in flat roofing — over 40 years of field performance data. It excels in extreme temperature flexibility, handling everything from NJ winter cold to summer heat without cracking.

  • ✔ Excellent UV and ozone resistance
  • ✔ Handles extreme temperatures well
  • ✔ Cost-effective for large areas
  • ✔ 20–30 year lifespan
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Modified Bitumen

Modified bitumen (torch-down) is a multi-layer system based on asphalt modified with rubber (SBS) or plastic (APP) polymers. It is installed in 2–3 layers, making it highly puncture-resistant and capable of handling foot traffic. Ideal for roofs with rooftop HVAC units or equipment.

  • ✔ Multi-layer — superior puncture resistance
  • ✔ Handles foot traffic well
  • ✔ Compatible with older buildings
  • ✔ 15–20 year lifespan
Critical to Performance

Drainage: The Most Important Factor in Flat Roofing

Flat roofs are not truly "flat" — they have a minimum slope of 1/4 inch per foot to move water to drains or edge scuppers. When drainage fails or was never installed correctly, water ponds on the roof surface. Ponding water (standing water 48+ hours after rain) will:

  • Add 5+ lbs per square foot of load to your structure
  • Accelerate membrane degradation and UV breakdown
  • Void most manufacturer warranties within 1–2 seasons
  • Seep through any membrane seam or penetration over time

Every flat roof we install is designed and built with proper slope and drainage as the top priority — not just a quality membrane over a bad drainage situation.

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Interior Drains

Set into the deck surface, interior drains handle the highest volume of water and are ideal for large roofs. We ensure proper strainer installation and debris protection.

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Scuppers & Edge Drainage

Openings through the parapet wall at the roof's low edges. Simpler than interior drains and easy to inspect. Often paired with downspouts for controlled water discharge.

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Tapered Insulation

For roofs with insufficient slope, we install tapered polyiso insulation boards that create drainage slope without modifying the structure. A permanent drainage fix without structural work.

TPO flat roof installation NJ
Why One Stop Roofing Pros

Flat Roofing Done Right the First Time

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Free Roof Inspection First

Before recommending anything, we inspect your existing flat roof — membrane condition, seam integrity, drain function, and moisture content. You get an honest assessment of whether repair or replacement is the right call.

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Guaranteed Leak-Free Installation

All seams, penetrations, and flashing details are installed to manufacturer specification and inspected before we leave. If it leaks within the workmanship warranty period due to installation, we come back and fix it — period.

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Residential & Commercial

We work on everything from residential garage rooftops and home additions to large commercial flat roofs. The system may differ but our commitment to a leak-free, properly drained result does not.

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Licensed & Insured

License NJ#13VH13979300. Full commercial liability and workers' compensation coverage on every project. Certificate of insurance provided to commercial property owners upon request.

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NJ Coastal Climate Experience

Ocean County flat roofs face heavy rain, wind-driven water, and temperature swings that test every seam. We've installed and repaired hundreds of flat roofs in this climate and understand what works here.

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Manufacturer-Backed Warranty

TPO and EPDM systems we install are eligible for manufacturer's material warranties of 10–20 years. As an approved installer, we can register your warranty directly with the manufacturer.

Our Process

Flat Roof Replacement — Step by Step

1

Inspection & Assessment

We inspect the existing membrane, decking, insulation, and drainage. Core cuts identify wet insulation that must be replaced. Infrared scanning available for large commercial roofs.

2

Tear-Off & Deck Prep

Old membrane and wet insulation are removed. The deck is inspected for rot and structural issues. New insulation is installed to achieve proper slope to drains.

3

Membrane Installation

The selected membrane is installed per manufacturer specifications. All seams are welded (TPO) or bonded (EPDM). Every penetration — pipe boots, vents, HVAC curbs — is fully flashed and sealed.

4

Seam Testing & Warranty

All seams are probe-tested for integrity. Drainage is confirmed functional. Final photos are taken, warranty is registered, and you receive full documentation before we leave.

System Comparison

Choosing the Right Flat Roofing System

System Lifespan Energy Savings Foot Traffic Cost Level
TPO Membrane 15–25 yrs ★★★ Limited $$
EPDM Rubber 20–30 yrs ★★ Limited $
Modified Bitumen 15–20 yrs ★★ Good $$
Common Questions

Flat Roofing FAQ

It depends on the system: EPDM typically lasts 20–30 years, TPO 15–25 years, and modified bitumen 15–20 years with proper maintenance. The single biggest factor in flat roof longevity is drainage — a well-drained roof with no ponding water will dramatically outperform a poorly-drained one regardless of membrane type.

Recurring leaks are almost always the result of patching symptoms rather than identifying the root cause. Water entry on flat roofs most often occurs at seams, penetrations (pipes, vents, HVAC curbs), or parapets — not in the middle of the field membrane. If you've had repeated repairs, we'll do a thorough inspection to find the actual entry point and give you a permanent solution, not another patch.

Yes — flat roofs are commonly used on home additions, sunrooms, garages, and lower-level bump-outs because they're structurally simpler and more affordable to build than pitched roofs on smaller spans. With a properly installed TPO or EPDM membrane and correct drainage, they perform reliably in NJ's climate. The key is hiring a contractor who understands flat roofing — not just someone who installs shingles.

Often, yes. If the membrane is generally intact with isolated damage at seams or penetrations, targeted repairs can extend the roof's life cost-effectively. If the membrane is brittled, heavily blistered, or has wet insulation underneath it across large areas, replacement is the better investment. We inspect first and give you an honest recommendation — we won't push replacement when repair makes sense.

Free Flat Roof Inspection — Schedule Today

Whether you have an active leak, ongoing drainage issues, or just want to know the condition of your flat roof before the next storm season, we'll give you a thorough, honest assessment at no charge.

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