Flat Roofing on Long Island, Built to Shed Water

Leaks, ponding water, and blistered membranes do not fix themselves. We repair, replace, and install flat roofs across Nassau, Suffolk, Queens, and Brooklyn, and tell you straight whether your roof needs a patch or a rebuild.

Since 1998

Serving Long Island roofs

Roofing and solar

One team, one roof

Long Island based

Nassau, Suffolk, Queens, Brooklyn

Straight answers

Patch or rebuild

Free quotes

Tell us what you see

Local Flat Roofers Who Know These Roofs From the Ground Up

Solaroof NY has been serving Long Island since 1998. We know how salt air, heavy rain, and freeze-thaw winters wear on flat roofs, so we build and repair them to handle it. For flat roofing on Long Island that holds up, every project starts with an honest look at the roof, a clear explanation of what it needs and why, and a quote with no padding and no unnecessary upsells.
flat roofing contractor long island

Our Flat Roofing Services

Flat Roof Installation

A new flat roof, an addition, or a garage roof starts with the right system for the building, its drainage, and its exposure. We plan the slope and drainage first, then install so water leaves the roof instead of sitting on it.

Flat Roof Repair

Leaks, blistering, ponding water, split seams, and failed flashing are the usual causes. We find where the water is really getting in and fix that, so the repair holds. If a patch will do the job, we will say so.

Flat Roof Replacement

When the membrane is worn through, soaked, or leaking in several places, patching stops making sense. We handle the full replacement, from tear off and deck repairs to the new roofing system, and explain why before we start.

Flat Roof Materials: EPDM, TPO, and Modified Bitumen

Flat roofs are not all the same. The membrane on top decides how the roof handles sun, ice, and foot traffic. Here are the three most common ones, in plain terms.

EPDM Flat Roof

A single sheet of synthetic rubber, usually black.

How it goes on
Large rubber sheets are glued, fastened, or weighted down, and the seams are joined with adhesive or tape.
Strengths
Stays flexible in cold weather, which helps through freeze-thaw winters.
Keep in mind
Seams and flashing details are where leaks tend to start, so the installation matters. The dark surface also absorbs heat.
  • Best for
  • Large, simple roofs
  • Cold, wet winters

Not sure which one fits? The right material depends on the building, its drainage, and how much sun and weather it gets. We look at the roof first, then explain your options. See our roof installation service.

Residential Flat Roofing for Homeowners

Flat and low-slope roofs are common on ranches, split-levels, additions, and garages across Long Island. They work hard here: corrosive marine air wears on the membrane, torrential downpours test the drainage, and extreme winter weather stresses every seam and flashing. A flat roof built and cared for with that in mind keeps the water out.

  • Installation: A system matched to the structure, drainage, and exposure, with proper prep.
  • Replacement: Full tear off and rebuild on a clean, solid deck.
  • Repair: Leaks, ponding, and failed seams fixed at the cause, not just patched over.
  • Protection: Seams and flashings sealed to keep water out in every season.

Part of your home pitched? We also work on shingle, metal, and cedar roofs. See all our roofing services.

residential flat roofing long island
Commercial Flat Roofing long island

Commercial Flat Roofing for Businesses

“Flat roofing is the norm for commercial buildings across Long Island. It suits large footprints and rooftop equipment, but a leak costs more than the repair: damaged stock, lost work, unhappy tenants. Our harsh coastal climate, severe storms, and extreme seasonal temperature swings wear on these roofs, so we check drainage and seams first, not just the surface. We handle commercial flat roofing for property owners and managers, planned around the building and how it is used, with as little disruption as possible.”

  • Installation: Systems planned around the building and its rooftop equipment.
  • Replacement: An honest call on replacement or repair.
  • Repair: Leaks and failed seams fixed at the cause.
  • Straight answers: A clear plan before any work starts.

Flat Roof Leaks, Maintenance, and Coating

Most flat roof leaks start in the same few places. Knowing where to look, and when a repair is enough, saves money and guesswork.

Where Flat Roofs Usually Leak

  • SeamsOpen or lifted seams let water under the membrane.
  • Flashing and edgesLoose or cracked flashing at walls and edges.
  • Drains and pondingStanding water wears the surface down.
  • Vents and equipmentEvery roof opening, including a skylight, is a seal that can fail.
  • Worn membraneCracks and blisters let moisture in and spread.

Repair, Coat, or Replace?

  • RepairDamage in one area
    Local leak, rest of the roof dry and sound.
  • CoatWorn but still sound
    A coating can add a waterproof layer. It cannot save a soaked roof.
  • ReplaceDamage everywhere
    Wet insulation or leaks that keep coming back.

Keeping a Flat Roof Watertight

  • Keep drains clear
  • Check after big storms
  • Watch your ceilings
  • Fix small problems early

Flat Roof Cost on Long Island

A flat roof is priced by what that roof needs, not by one number. Here is what moves the cost, so a quote makes sense when you get one.

1 2 3 4 5 6 Flat roof installation cost on Long Island
  1. Roofing materialEPDM, TPO, and modified bitumen are different products at different prices.
  2. Size and shape of the roofMore area means more material, and corners, curbs, and edges add detail work.
  3. Tear off and repairs underneathRemoving old roofing and fixing wet insulation or a damaged deck adds to the job.
  4. Drainage and slopeIf water ponds, slope or drain work becomes part of the price.
  5. Rooftop equipment and accessUnits, vents, and hard to reach roofs take more time and setup.
  6. Flashing and edgesWalls, parapets, and edges need careful detail work to keep water out.

We look at your roof first and explain what is in the quote, so there are no guesses. Thinking about a full change? See our roof replacement service.

How We Deliver Reliable Flat Roofing

Every flat roof job follows the same path, from the first look at the roof to the final check. Tap a step to see what happens.

Roof inspection

We look at the membrane, seams, flashing, drains, and the deck where we can, and note where water is getting in or sitting.

Areas We Serve for Flat Roofing on Long Island

Solaroof NY provides flat roofing in these parts of Long Island.

NassauCounty
SuffolkCounty
QueensBorough
BrooklynBorough

Not sure we cover your address? Call 516-744-0300 and we will tell you.

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What Our Clients Say About Us

Hear directly from our clients about their experience with Solaroof NY.

4.9
Based on 77 Reviews
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Ashok Kumar
5.0
October 17, 2025

Absolutely satisfied with Solaroof NY! The installation was quick and clean, and their customer service was outstanding. I love how they helped me understand the benefits of solar energy. I’m already seeing a reduction in my power costs — worth every penny!

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Jakia Farhana
5.0
June 24, 2025

⭐️⭐️⭐️⭐️⭐️ The process was smooth from the initial quote to the final inspection. The crew replaced my roof and added solar panels in just a few days. I was amazed by how clean and efficient they were. Now I’m saving money on utilities and my house has never looked better. Total win!

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Dias IN
5.0
February 17, 2025

They not only installed the roof perfectly, but the solar panels were a great addition, saving me money on my energy bill, and I couldn’t have asked for a better service or price.

google
Afif Maulana
5.0
February 17, 2025

I chose them because of the great price and reputation, and I’m glad I did, they delivered excellent service, completed the work on time, and now my home is more energy-efficient than ever.

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Reskyta Maria
5.0
February 17, 2025

The work was completed on time, and the solar panels were installed seamlessly, making the entire process simple, affordable, and stress-free from start to finish.

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Rando
5.0
February 17, 2025

The service was top-notch, the pricing was very competitive, and the job was finished quickly and professionally, now my roof is solid, and I’m already saving money with the new solar system.

google
Ni'matul Fauziyah SAP
5.0
February 16, 2025

I needed a new roof and solar system, and the team did an excellent job, offering competitive pricing, great service, and completing everything exactly as scheduled.

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Rahmad Dwi Yuanda
5.0
February 16, 2025

The solar panels have already started saving me money, and the roof looks fantastic, they did an amazing job explaining everything and completed the work on time without any hidden fees.

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Yehezkiel Hutapea
5.0
February 16, 2025

I needed my roof replaced and solar panels installed, and they were the best in terms of price and service, they completed the project on time, and I’m already noticing a drop in my utility bills.

Frequently Asked Questions

How long does a flat roof last on Long Island?

It depends on the material, how well it was installed, how well water drains off, and how much sun exposure, coastal moisture, and severe seasonal weather the roof sees. Roofs that drain properly and get checked after storms tend to last longer than roofs where water sits. An inspection is the best way to know where yours stands.

There is no single best material. EPDM is a rubber membrane, TPO is a single ply membrane, and modified bitumen is an asphalt based roofing that comes in rolls. Each has different strengths, and the right one depends on the building, the roof shape, foot traffic, and budget. We look at your roof and talk through which one fits.

A few leaks in a roof that is otherwise sound can often be repaired. Replacement makes more sense when the damage is widespread, the insulation is wet, the deck is soft, or repairs keep failing in new spots. We inspect the roof and tell you straight which one it is. See our roof repair and roof replacement services.

It depends on the roof. The main things are the material, the size and shape of the roof, whether the old roofing has to come off, how much insulation or deck repair is needed, drainage and slope work, and rooftop equipment. There is no one price for every flat roof, so we look at the roof first and explain what is in the quote.

Sometimes. A coating can work on a flat roof that is still sound, meaning the membrane is mostly intact, the insulation and deck are dry, and the leaks are limited. It is usually not enough when the insulation is wet, the deck is soft, or the membrane is failing across large areas. An inspection is the only way to know which side your roof is on.

Flat roofs leak where water finds a way in. Common spots are seams, flashing at walls and edges, drains, and anything that comes through the roof, like vents and rooftop units. Ponding water makes it worse because it sits on the membrane instead of draining off. A leak inside is often not directly under the damage, so the source has to be traced on the roof.

Yes, flat roofs are often a good fit for solar, but the roof needs to be in good shape first because panels stay up for years. If the membrane is near the end of its life, it is usually better to replace it before the panels go on. Mounts also need to be flashed so the roof stays watertight. We install both roofing and solar, so we can plan them together. See our solar panel installation service.

Get Your Free Flat Roof Quote

Tell us about your flat roof and what you are seeing. We will look at your property, give you an honest answer on whether it needs a repair or a replacement, and explain what is in your quote. Prefer to talk? Call 516-744-0300.

Tell Us About Your Roof

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