Durable flat-roof installation using modified bitumen systems—built for watertight performance, clean details, and long-term protection.

Written estimates • Photo documentation • Clean jobsite • Warranty options

When a Bitumen Flat Roof Is the Right Choice

Modified bitumen is a proven flat-roof system that performs well when installed with proper layering, drainage planning, and attention to seams and penetrations.

Bitumen flat roofing is a great fit for:

• Low-slope and flat roof sections on homes
• Garages and additions
• Commercial buildings and small storefronts
• Replacement of aging flat roofs with recurring leaks
• Roofs that need a tough, repairable membrane system
• High-traffic rooftops and balconies

Not sure if you need a full replacement or a repair? We’ll inspect and give you a straightforward recommendation.

Flat roofs are a popular and practical roofing solution for both residential and commercial properties, offering a clean look, efficient use of space, and reliable performance when properly installed. Bitumen flat roofing, in particular, is known for its durability, waterproofing capabilities, and resistance to harsh weather conditions. However, because flat roofs don’t shed water as easily as sloped roofs, proper installation is absolutely critical to prevent leaks, pooling water, and long-term damage.

Bitumen flat roofs are constantly exposed to sun, rain, snow, ice, and temperature fluctuations. Over time, inferior materials or poor installation can lead to cracks, seams separating, blistering, or water infiltration. That’s why choosing experienced professionals for your bitumen flat roof installation is essential to protecting your property and avoiding costly repairs down the line.

The flat roofing specialists at Done Rite have extensive experience installing high-quality bitumen flat roofing systems designed for long-lasting performance. We carefully assess your building’s structure, drainage, and usage needs before recommending the best bitumen solution, whether it’s modified bitumen torch-down, self-adhered, or cold-applied systems. Our goal is to deliver a roof that is fully sealed, watertight, and built to withstand the elements.

A properly installed bitumen flat roof provides excellent protection against moisture, UV exposure, and temperature extremes. Its multi-layer construction adds strength and flexibility, allowing the roof to expand and contract without cracking. When installed correctly, bitumen roofing offers dependable performance for decades with minimal maintenance.

Whether you’re replacing an aging flat roof or installing a brand-new one, our team ensures every detail is handled with precision—from surface preparation and insulation to flashing, seams, and drainage integration. We use top-grade materials and proven installation techniques to ensure your flat roof performs efficiently and reliably.

If you’re looking to maximize the lifespan of your flat roof, we also offer guidance on maintenance and protective coatings that can further enhance durability and energy efficiency. Preventative care can significantly reduce wear and tear while helping you avoid unexpected leaks or structural issues.

Some common signs that it may be time for a new bitumen flat roof installation include:

• Frequent leaks or water pooling
• Cracks, blisters, or bubbles in the roofing surface
• Worn or separating seams
• Interior water stains or ceiling damage
• An aging flat roof nearing the end of its lifespan
• Rising energy costs due to poor insulation

If you’re experiencing any of these issues or planning a new flat roofing project, our team is here to help. Done Rite delivers professional bitumen flat roof installations that prioritize durability, safety, and long-term value. Contact us today to schedule a consultation and protect your property with a flat roofing system you can rely on.

What’s Included in a Done Rite Bitumen Flat Roof Installation

A flat roof is only as good as its details—especially around edges, drains, and penetrations.

Our installation typically includes:

• Removal of old flat roofing (as needed) and proper disposal
• Inspection of the roof deck/substrate and recommendations if repairs are needed
• Preparation for smooth, stable installation
• Proper underlayment/base layer (as appropriate)
• Modified bitumen membrane installation with correct overlap and sealing methods
• Full cleanup and final walkthrough
• Warranty options explained clearly

Our Bitumen Flat Roof Installation Process

You’ll know what’s happening before work begins—and what to expect at completion.

We document the roof condition, leaks, drainage, and problem areas.

Clear scope, recommended system, and transparent pricing.

We coordinate access, protect key areas, and prepare the jobsite.

Membrane installation with careful attention to seams, edges, flashing, and penetrations.

Cleanup, photos, and a final review of the completed roof.

We go through the work and answer questions.

Warranty options and maintenance tips.

Key Performance Factors for Flat Roofs

Flat roofs fail most often from poor detailing—not “bad material.”

We focus on:

• Drainage planning (reducing ponding water where possible)
• Seam integrity (overlaps and sealing done correctly)
• Edge and wall transitions (common leak areas)
• Penetrations (vents, pipes, HVAC curbs)
• Flashing details (critical on flat roofs)

Roof Repair (Leak Fix + Flashing)

Leak traced to compromised flashing and missing shingles. Replaced damaged components, sealed transitions, and verified the repair with a controlled water test.

Materials Used (Roof Repair):

• Architectural asphalt shingles (matching color/line)
• Ice & water shield (peel-and-stick membrane) for vulnerable areas
• Synthetic underlayment patch (where needed)
• Step flashing / counter flashing (aluminum or galvanized steel)
• Pipe boot / vent flashing (as applicable)
• Roofing sealant (exterior-grade)
• Roofing nails (galvanized)
• Starter strip shingles (if repair requires edge rebuild)
• Starter strip shingles (if repair requires edge rebuild)

Roof Replacement (Full System)

Full roof replacement due to age and granule loss. Removed old materials, repaired decking where needed, upgraded protection at eaves/valleys, and installed a new ventilation-ready system.

Materials Used (Roof Replacement):

• Architectural shingles (or designer shingles, if applicable)
• Starter strip + ridge cap shingles
• Ice & water shield (eaves/valleys/penetrations)
• Synthetic underlayment (full coverage)
• Pipe boot / vent flashing (as applicable)
• Drip edge (aluminum) for eaves and rakes
• Valley protection (ice & water + woven/closed-cut valley as specified)
• Flashing package (chimney, walls, vents)
• Ridge vent system (with matching intake ventilation if required)
• Pipe boots / vent flashings
• Fasteners: galvanized roofing nails
• Plywood/OSB sheathing (only where replacement is needed)

Roof Repair (Leak Fix + Flashing)

Leak traced to compromised flashing and missing shingles. Replaced damaged components, sealed transitions, and verified the repair with a controlled water test.

Materials Used (Roof Repair):

• Architectural asphalt shingles (matching color/line)
• Ice & water shield (peel-and-stick membrane) for vulnerable areas
• Synthetic underlayment patch (where needed)
• Step flashing / counter flashing (aluminum or galvanized steel)
• Pipe boot / vent flashing (as applicable)
• Roofing sealant (exterior-grade)
• Roofing nails (galvanized)
• Starter strip shingles (if repair requires edge rebuild)
• Starter strip shingles (if repair requires edge rebuild)

Roof Replacement (Full System)

Full roof replacement due to age and granule loss. Removed old materials, repaired decking where needed, upgraded protection at eaves/valleys, and installed a new ventilation-ready system.

Materials Used (Roof Replacement):

• Architectural shingles (or designer shingles, if applicable)
• Starter strip + ridge cap shingles
• Ice & water shield (eaves/valleys/penetrations)
• Synthetic underlayment (full coverage)
• Pipe boot / vent flashing (as applicable)
• Drip edge (aluminum) for eaves and rakes
• Valley protection (ice & water + woven/closed-cut valley as specified)
• Flashing package (chimney, walls, vents)
• Ridge vent system (with matching intake ventilation if required)
• Pipe boots / vent flashings
• Fasteners: galvanized roofing nails
• Plywood/OSB sheathing (only where replacement is needed)

Our Services

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What Affects the Cost of a Bitumen Flat Roof in New Jersey?

Flat-roof pricing varies mainly based on the roof’s condition and complexity.

Key cost factors include:

• Tear-off and disposal requirements
• Substrate repairs (if damaged areas are found)
• Number of penetrations (pipes, vents, HVAC)

• Edge metal and flashing complexity
• Drainage design and any ponding issues
• System selection and warranty options

Why Choose Done Rite for Flat Roofing

Flat-roof pricing varies mainly based on the roof’s condition and complexity.

Clear, written estimates (no vague surprises)

Photo documentation and transparent communication

Attention to flat-roof details (seams, edges, penetrations, drainage)

Clean jobsite and respectful crews

Scheduled work with timeline expectations

Warranty options explained in plain language

How Long Does a Bitumen Flat Roof Installation Take?

Timelines depend on roof size, access, weather, and how much tear-off is required.

Factors that affect schedule:

• Roof square footage and number of penetrations

• Existing layers and removal needs

• Deck/substrate condition

• Weather windows and safety conditions

• Drainage corrections (if needed)

We’ll give you a realistic schedule and keep you updated.

Bitumen Flat Roof Installation FAQs

Yes—modified bitumen is a proven system for low-slope roofs when installed with correct layering, sealing, and flashing details.

Lifespan depends on installation quality, drainage, sun exposure, foot traffic, and maintenance. We’ll explain what to expect based on your roof.

The most common causes are seam failure, poor flashing, penetration issues, and ponding water. That’s why details and drainage are critical.

Sometimes, but it depends on the condition of the existing roof, moisture presence, and local requirements. We’ll inspect and recommend the safest approach.

Permit requirements can vary by municipality and the scope of work. If a permit is required, we’ll help confirm what your town needs.

Yes—warranty options depend on materials and the scope of work. We explain warranty coverage clearly and how to maintain it.

We evaluate drainage during inspection and will recommend practical improvements when possible.

 
 
 
 
  EXCELLENT  
  
 Based on 246 reviews 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
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 Larry Morgan 
 
 
 
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I'm very happy with Done Rite roofing, they work 7:00 am to 7:00 pm in between thunderstorms not to repair but to build a brand new roof on my mother's house 🏡
  
 
  
 
 
 
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 Kassem Darwiche 
 
 
 
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Tony and his team absolutely crushed it. Pricing was great compared to other quotes I got. Job was swift they took care of everything. Every time Tony said his team would be there they showed up. I sent another roofing expert up to look at the work and he said everything was done with great care and good materials. Would definitely recommend for anyone looking to get a roof done.
  
 
  
 
 
 
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 Pete Fabry 
 
 
 
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They did a great job re-roofing the house. Also did an exceptional job cleaning up. You could not tell they had been there. Would hire again.
  
 
  
 
 
 
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 Richard Davis 
 
 
 
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Tony and his crew at Done Rite Exteriors did an outstanding job installing our metal accent roof and matching gutters. He arrived right on schedule, completed the project efficiently, and delivered top-notch craftsmanship with perfect matching detail. They also did a fantastic job cleaning up the site afterward, leaving zero debris behind. If you need reliable quality and exceptional professionalism, I highly recommend Done Rite Exteriors!
  
 
  
 
 
 
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 robert Cortright 
 
 
 
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I had an excellent experience with Done Rite Roof Repair. They completely redid the siding and gutters on my home, including replacing and repairing the wood behind the siding where needed. Before the work was done, we were having water intrusion and leaks whenever it rained. Since the project was completed, everything has stayed completely dry, even through heavy rain, and the exterior looks fantastic. The quality of the workmanship and attention to detail really shows. Tony was my main point of contact throughout the entire process and was great to work with. He was responsive, knowledgeable, straightforward, and made sure everything was done properly from start to finish. It’s not always easy finding a contractor you can trust to do a major exterior project correctly, but I’m extremely happy with the result. I would absolutely recommend Tony and the Done Rite team to anyone looking for high-quality siding, gutter, or exterior work.
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Robert Register 
 
 
 
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I want to thank Done Rite Roof Repair  for their outstanding roof installation on my 4th generation home.  Tony’s customer service was excellent and he was very informative during the entire process.  Thanks Mr. Robert Register.
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Sabrina Raghunandan 
 
 
 
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Excellent services in rapid time! Tony & his team were very professional & highly recommended!
  
 
  
 
 
 
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 Peter Ruiz 
 
 
 
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Honest pricing and reliable roofing experts.
  
 
  
 
 
 
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 Menna Mohammed Khallaf Ahmed 
 
 
 
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Good experience highly recommended it.
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Adom Thomas 
 
 
 
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Done Rite Roof Repair - Exteriors provides reliable roofing services with excellent craftsmanship and attention to detail...
  
 
  
 
 
 
   
 
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