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Licensed flat roof installation, repair, and replacement in Nassau County
Modified Bitumen Roofing in Freeport Built for Flat Roofs
Modified Bitumen Roofing in Freeport is a durable, multi-layer flat roof system that handles ponding water, ice dams, and coastal storms. We install, repair, and replace modified bitumen roofs on homes, garages, and commercial buildings across Freeport, NY. If your flat roof is blistering, leaking, or past 15 years old, we can help.
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Prepared, clean crews
Equipped vehicles and respectful cleanup.
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What is included
What Our Modified Bitumen Roofing Includes
Every modified bitumen roof we install includes the materials, labor, and details that make it last. Here's what's covered in a standard installation, and what we handle as add-ons when your roof needs them.
Tear-Off and Disposal
We remove the existing roofing down to the deck, haul it away, and dispose of it properly. If there are multiple layers, we remove them all. You don't have to rent a dumpster or make trips to the transfer station.
Decking Inspection and Repair
We check the deck for rot, soft spots, and delamination. Rotted plywood or plank decking gets replaced before the new roof goes on. We show you what we found and what we replaced.
Base Sheet and Cap Sheet
We install a base ply and a granulated or foil cap sheet from GAF or CertainTeed. Seams are adhered with torch, cold adhesive, or peel-and-stick depending on the system. Every seam gets rolled for a tight bond.
Flashing and Penetrations
New flashing at walls, curbs, drains, and pipe boots. We seal every penetration with roofing sealant rated for modified bitumen. Bad flashing is the number one cause of flat roof leaks, so we don't cut corners here.
Drainage and Slope Check
We verify that water flows to drains or scuppers and doesn't pond. If the slope is inadequate, we can add tapered insulation to correct it. Proper drainage is what keeps a modified bitumen roof alive for 20 years.
Cleanup and Warranty
We magnet-sweep for nails, haul away all debris, and leave your property clean. You get manufacturer warranty paperwork and our 5-year workmanship warranty. If anything goes wrong, call us and we'll come back.
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Service overview
Modified Bitumen Roofing in Freeport: What It Is
Modified Bitumen Roofing in Freeport is a flat roof system made from asphalt reinforced with polymer modifiers and layered with fiberglass or polyester matting. It comes in rolls, gets applied with a torch, cold adhesive, or self-adhering peel-and-stick backing, and finishes with a granulated or foil cap sheet. The result is a tough, flexible membrane that resists ponding water, UV breakdown, and the freeze-thaw cycles we get on Long Island. Most residential flat roofs here use two or three plies for redundancy.
Freeport homeowners call us when a flat roof over a garage, addition, or commercial space starts leaking after a nor'easter or shows blistering in the summer heat. Modified bitumen roofing Freeport properties rely on handles the coastal humidity and salt air better than standard asphalt shingles laid flat. If you've been searching for modified bitumen roofing near me Freeport, we've been installing these systems since 2005 and know exactly how they perform in Nassau County's climate.
- Handles Ponding Water — Freeport's flat roofs often hold water after heavy rain. Modified bitumen's multi-ply construction and seamless torch-down seams resist ponding far better than single-ply alternatives. We install with proper slope and tapered insulation so water drains instead of sitting. A correctly installed modified bitumen roof installation Freeport New York homeowners choose can handle standing water for days without leaking.
- Withstands Coastal Storms — Salt air, high winds, and nor'easters beat up flat roofs on the South Shore. Modified bitumen's polymer modifiers keep the membrane flexible in cold snaps and stable in summer heat. We fasten and adhere per manufacturer specs so wind uplift isn't a weak point. After a storm, most of our modified bitumen roofs come through with nothing more than debris to clear.
- 15-25 Year Lifespan — A properly installed modified bitumen roof lasts 15 to 25 years in Freeport's climate, depending on ply count, cap sheet quality, and maintenance. That's longer than most rolled roofing and competitive with TPO or EPDM at a lower upfront cost. We use GAF and CertainTeed cap sheets with manufacturer warranties that back the lifespan.
- Walkable and Repairable — Unlike some single-ply membranes, modified bitumen stands up to occasional foot traffic from HVAC techs or chimney sweeps. When damage does happen, we can patch it with roofing sealant and a torch-down or peel-and-stick patch instead of replacing the whole roof. That keeps modified bitumen roof repair Freeport New York costs low over the life of the system.
- Same-Day Estimates — Call before noon and we'll inspect your flat roof and give you a written estimate the same day in most cases. No waiting three days for a callback. We give you a real number, not a range that doubles after the job starts. That's how we've kept customers in Freeport, Baldwin, and Merrick coming back for 21 years.
- Manufacturer-Backed Warranties — We install GAF and CertainTeed modified bitumen systems with manufacturer warranties that cover materials for 10 to 20 years depending on the system. Our workmanship warranty covers installation for 5 years. If a seam fails or a flashing leaks because of how we installed it, we fix it at no cost.
- Licensed, Insured, and Local — We're a licensed and insured New York roofing contractor based right here in Freeport. Our crews carry full liability and workers' comp coverage. We know Nassau County code requirements for flat roofs, including proper slope, drainage, and fire ratings. You're hiring neighbors, not a storm-chaser from out of state.
- Repairs Before Replacements — If your modified bitumen roof has a few years left, we'll tell you. We can patch blisters, reseal flashing, and coat the surface to extend its life at a fraction of replacement cost. When it's time for a new roof, we'll show you why. No pressure either way. That honesty is why people search for a modified bitumen roofer Freeport and end up calling us.
The service timeline
Our Modified Bitumen Installation Process
Inspection and Estimate
We walk your roof, check for soft spots, ponding, flashing failure, and decking rot. We measure square footage, note existing layers, and check attic ventilation if accessible. You get a written estimate the same day with material options and a clear price. Most inspections take 30 to 45 minutes.
Tear-Off and Deck Prep
We remove the old roofing down to the deck, haul it away, and inspect the decking. Rotted plywood gets replaced. We install ice and water shield along eaves and valleys, then a base sheet. On a typical 1,000-square-foot flat roof, tear-off and prep takes one to two days.
Membrane Installation
We roll out the base ply, then the cap sheet, adhering with torch, cold adhesive, or peel-and-stick depending on your roof and budget. Seams get rolled with a seam roller for a tight bond. Flashing at walls, drains, and penetrations gets cut and fitted by hand. Most residential flat roofs take two to three days.
Flashing and Details
This is where leaks start if it's done wrong. We install new roof flashing at all transitions, replace pipe boots and vent collars, and seal every penetration with roofing sealant rated for modified bitumen. We check that drains and scuppers flow freely. Detail work adds half a day on most jobs.
Final Walkthrough and Cleanup
We magnet-sweep the yard and driveway for nails, haul away all debris, and walk the roof with you if you want. You get warranty paperwork, care instructions, and our phone number. If anything looks off in the first year, we come back at no charge.
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Tools and Methods We Use
Roofing nail gun
Fastens base sheets and underlayment to the deck. We use pneumatic nail guns with proper pressure settings to avoid over-driving nails through the membrane.
Seam roller
Rolls seams on modified bitumen cap sheets to ensure a tight, watertight bond. Every seam gets rolled, not just the ones that look loose.
Roofing safety harness
Keeps our crew safe on steep or elevated flat roofs. We rig anchor points and use harnesses on every job that requires fall protection.
Ladder stabilizer
Keeps ladders secure against gutters and walls so we can access the roof safely without damaging your gutters or siding.
Chalk line
Marks straight lines for membrane layout and flashing alignment. Clean lines mean better seams and a roof that looks professional.
Utility knife and pry bar
Cuts membrane and pries up old flashing during tear-off. We use fresh blades and proper technique to keep cuts clean and precise.
Air compressor
Powers our pneumatic nail guns and keeps the crew moving efficiently. We bring our own compressor so we're not dependent on your power.
Torch-down application
We heat the modified bitumen with a torch and roll it into place for a seamless bond. This method works well on flat roofs with good ventilation and produces a strong, monolithic membrane. We follow manufacturer specs for heat and overlap.
Cold adhesive application
For roofs where open flame isn't safe or permitted, we use cold adhesive to bond the membrane. It takes longer to cure but produces a reliable, watertight result. Common on occupied commercial buildings.
Peel-and-stick self-adhered membrane
Self-adhering modified bitumen goes down without torch or adhesive. It's a good option for smaller roofs, repairs, and situations where fumes or fire risk are a concern. We roll it thoroughly for full contact.
Two-ply vs. three-ply systems
Two-ply systems use a base sheet and a cap sheet. Three-ply adds an extra layer for more redundancy and longer life. We recommend based on your roof's exposure, foot traffic, and budget.
NRCA installation standards
We follow NRCA guidelines for flat roof installation, including proper fastening patterns, flashing details, and drainage slope. These standards are what manufacturers require for warranty coverage.
Where this service helps
When Modified Bitumen Roofing Makes Sense
Your garage roof is 20 years old and starting to leak at the seams.
We inspect the membrane, check the decking, and determine whether a repair or full replacement makes sense. If the roof is past saving, we tear it off and install a new two-ply modified bitumen system with new flashing and proper drainage. You get a dry garage, a roof that lasts another 15 to 25 years, and a written warranty. Most garage roofs are done in two days.
You're building an addition with a low-slope roof and need a membrane that works.
We spec a modified bitumen system for your slope, install it over new decking with ice and water shield, and flash it properly where it ties into the existing house roof. We pull permits and coordinate with your builder if needed. A watertight flat roof that matches the rest of your home and passes inspection. You get manufacturer and workmanship warranties.
Your commercial building has a modified bitumen roof with a few problem areas but most of it is sound.
We repair the failed sections, reseal flashing, and coat the rest of the roof to extend its life. If the damage is widespread, we'll show you the numbers on repair versus replacement so you can decide. You get five to ten more years out of the existing roof at a fraction of replacement cost, with the problem areas fixed properly.
A storm tore up part of your flat roof and rain is coming.
We tarp the damaged area to stop water intrusion, then return to make permanent repairs once the weather clears. We document the damage for insurance if you're filing a claim. No further water damage inside, a properly repaired roof, and documentation you can use for your claim.
Local execution
How Modified Bitumen Roofing Works in Freeport
Freeport's climate is tough on flat roofs. Coastal humidity, salt air, nor'easters, and freeze-thaw cycles all take a toll. Modified bitumen handles these conditions better than most flat roof systems because of its multi-ply construction and flexible polymer modifiers. Most flat roofs here are on garages, additions, and commercial buildings, and many were built before 1980 with minimal slope. We see a lot of ponding water, flashing failure, and blistering from trapped moisture. When we install a modified bitumen roof, we correct the slope if needed, install proper drainage, and use cap sheets rated for coastal exposure. If you're searching for modified bitumen roofing services Freeport, we've been doing this work here since 2005 and know what holds up. We also work in Baldwin, Roosevelt, Merrick, and the surrounding South Shore communities.
Freeport waterfront areas
Salt air and wind exposure are higher near the water. We spec cap sheets and fastening patterns that resist corrosion and wind uplift on these roofs.
Downtown Freeport commercial district
Flat roofs on commercial buildings here see foot traffic from HVAC techs and heavy ponding. We install systems rated for both.
Residential neighborhoods near the Nautical Mile
Many homes here have flat garage roofs and additions. We see a lot of aging modified bitumen that's ready for replacement.
North Freeport
Tree cover means more debris in gutters and drains. We install drain screens and recommend annual maintenance to prevent clogs.
Coastal humidity and salt air
Accelerates corrosion on metal flashing and fasteners. We use corrosion-resistant materials and check flashing carefully on every job.
Freeze-thaw cycles in winter
Water gets into small cracks, freezes, and expands. Modified bitumen's flexibility handles this better than rigid membranes, but proper flashing and drainage are still critical.
Summer heat and UV exposure
Breaks down cheaper membranes and causes blistering. We use cap sheets with granulated or foil surfaces that reflect UV and extend roof life.
Heavy rain and nor'easters
Flat roofs without proper slope pond water and stress the membrane. We correct slope and install drainage that handles heavy rain events.
Before and after
What a successful service visit changes.
Garage Roof Replacement in Freeport
Before
A 22-year-old modified bitumen roof on a detached garage was leaking at the seams and flashing. The membrane was blistered across 40% of the surface, and the decking had soft spots near the drain. The homeowner had been patching it for three years.
After
We tore off the old roof, replaced 120 square feet of rotted decking, and installed a new two-ply modified bitumen system with new flashing and a proper drain. The roof has been dry through two storm seasons. Total job time: two days.
Maintenance: We recommended an annual drain check and a bi-annual inspection. The homeowner clears debris each fall and calls us if anything looks off.
Commercial Roof Repair in Baldwin
Before
A 3,000-square-foot commercial modified bitumen roof had three active leaks and widespread flashing failure. The property manager was getting complaints from tenants about ceiling stains. The roof was 14 years old and otherwise sound.
After
We repaired the flashing at all penetrations, patched two blisters, and coated the entire roof with a reflective coating. The leaks stopped, and the coating extended the roof's life by an estimated five to eight years. Cost was less than 20% of replacement.
Maintenance: We set up a bi-annual maintenance plan to clear drains and inspect seams. The property manager gets a written report after each visit.
Addition Roof Installation in Merrick
Before
A homeowner built a 400-square-foot addition with a low-slope roof. The builder had used rolled roofing that started leaking within a year. Water was coming into the new kitchen ceiling.
After
We removed the failed rolled roofing, installed ice and water shield, and put down a two-ply modified bitumen system with proper flashing where the addition tied into the main house. The leak stopped immediately. The roof is warrantied for 15 years.
Maintenance: We showed the homeowner how to check the flashing where the two roofs meet and recommended an inspection every two years.
Problems we solve
Flat Roof Problems We Solve in Freeport
Modified bitumen roofs fail in predictable ways. Here are the problems we see most often on Freeport flat roofs and how we fix them.
Ponding water on flat roofs
Standing water breaks down the membrane, grows algae, and eventually finds its way through seams and flashing. Left alone, it shortens roof life by years and causes ceiling damage inside. We correct the slope with tapered insulation, clear or replace drains, and install a modified bitumen system rated for occasional ponding. If the structure can't be re-sloped, we spec a membrane that handles standing water without failing.
Blistering and bubbling membrane
Blisters happen when moisture gets trapped under the membrane and the sun heats it. They grow over time and eventually crack open, letting water in. A roof with widespread blistering is usually near the end of its life. Small blisters can be cut out and patched with new modified bitumen and roofing sealant. Widespread blistering means the roof is failing and replacement is the better investment. We'll tell you which situation you're in.
Flashing failure at walls and curbs
Flashing is where most flat roof leaks start. Sealant dries out, metal lifts, and water gets behind the membrane. By the time you see a ceiling stain, the leak has usually been running for months. We remove failed flashing, inspect the substrate, and install new flashing with proper termination and counterflashing. We seal with roofing sealant rated for modified bitumen and test before we leave.
Clogged gutters and drains causing roof damage
When drains clog, water backs up onto the roof and finds every weak point. It also adds weight and accelerates membrane breakdown. This is one of the most common causes of flat roof leaks we see in Freeport. We clear drains and scuppers, check that gutters flow, and install drain screens if debris is a recurring problem. We also inspect the membrane around drains for damage caused by standing water.
Proof behind the promise
Licensed, Certified, and Warrantied
Technical expertise
Flat Roof Experience You Can Verify
We've been installing and repairing modified bitumen roofs in Freeport and across Nassau County since 2005. That's 21 years of flat roof work on garages, additions, commercial buildings, and multi-family properties. Our crews are trained on GAF and CertainTeed systems, carry OSHA 10 and OSHA 30 certifications, and work to NRCA installation standards. We pull permits when required and know what Freeport's building department looks for on flat roof replacements. When you hire us, you get a crew that's done this hundreds of times, not a generalist who watched a video.
- 21 years installing modified bitumen and flat roofing systems in Nassau County
- GAF and CertainTeed manufacturer certifications for modified bitumen systems
- OSHA 10 and OSHA 30 certified crews on every job site
- NRCA member following national roofing installation standards
- Hundreds of flat roof installations and repairs completed across the South Shore
Customer stories
What Freeport Customers Say
Mike R.Homeowner, Freeport
Our garage roof was leaking for two years and three other guys couldn't find it. These guys traced it to a flashing failure in about 20 minutes. They installed a new modified bitumen roof in two days and it's been dry through two nor'easters. Fair price, no surprises, cleaned up everything.
Sandra L.Property Manager, Baldwin
We manage six buildings with flat roofs and switched to Roof Repaire Freeport after a bad experience with another company. They replaced a modified bitumen roof on one of our commercial buildings last spring. The crew was professional, the estimate was accurate, and they finished when they said they would. We've used them three times since.
Dave K.Homeowner, Merrick
I called about a leak and expected to be told I needed a full replacement. They patched the blister, resealed the flashing, and told me the roof had five or six years left. Cost me $600 instead of $9,000. When it's time to replace, they're getting the call. That kind of honesty is rare.
How much does modified bitumen roofing cost in Freeport NY?
Most residential modified bitumen roof installations in Freeport run $6 to $12 per square foot installed, or roughly $6,000 to $12,000 for a 1,000-square-foot flat roof in 2026. Repairs typically cost $400 to $1,500 depending on the damage. Tear-off of existing layers, decking repair, and added insulation push the number up. We give you a written estimate before any work starts.
How long does a modified bitumen roof last in Freeport?
A properly installed modified bitumen roof lasts 15 to 25 years in Freeport's climate. The range depends on ply count, cap sheet quality, drainage, and whether you keep up with maintenance. Coastal humidity and freeze-thaw cycles are hard on flat roofs, so we recommend an inspection every two years. Roofs we installed 20 years ago are still holding up when they've been maintained.
Who installs modified bitumen roofs in Freeport New York?
We do. Roof Repaire Freeport has been installing and repairing modified bitumen roofs across Freeport and Nassau County since 2005. Our crews are trained on GAF and CertainTeed systems and carry OSHA certifications. We pull permits, follow local code, and back our work with a 5-year workmanship warranty. Call us for a same-day estimate.
Is modified bitumen roofing good for Freeport NY weather?
Yes. Modified bitumen handles the coastal humidity, salt air, and freeze-thaw cycles that break down cheaper flat roof systems. Its multi-ply construction resists ponding water, and the polymer modifiers keep it flexible in cold snaps. We've installed these roofs on the South Shore for 21 years. If your flat roof takes on water or faces heavy sun, modified bitumen is one of the best choices available.
Frequently asked questions
Frequently Asked Questions
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Ask the local teamRelated services
Related Services
Roof Installation
We install modified bitumen, TPO, EPDM, and other flat roof systems from the deck up. If you're building a new garage, addition, or commercial space in Freeport, we can spec the right membrane for your slope, drainage, and budget.
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Roof Replacement
When your modified bitumen roof is past its lifespan, we tear off the old system, repair any decking, and install a new multi-ply roof. Most flat roof replacements in Freeport take two to four days from tear-off to final cleanup.
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Roof Repair
We patch blisters, reseal flashing, replace damaged cap sheets, and fix leaks on modified bitumen roofs. Most repairs take half a day and cost a fraction of replacement. We'll tell you honestly if a repair will buy you time or if replacement makes more sense.
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Roof Inspection
Our flat roof inspections check membrane condition, seam integrity, flashing, drainage, and decking. We document what we find with photos and give you a written report. Recommended every two years for modified bitumen roofs in Freeport's climate.
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Contact our Freeport roofing team
Call 342425679 or email us and we will get back to you the same business day. For active leaks and storm damage, we answer around the clock. We serve Freeport and the surrounding Nassau County communities, and we can usually schedule an inspection within a few days.