Commercial Flat Roofing
Commercial buildings need high-performance systems to protect your investment. Joyland Roofing specializes in long-lasting, energy-efficient commercial flat roofing. We provide honest assessments and expert installation by local crews. From minor repairs to full replacements, we bring elite craftsmanship and transparency to every job.
At Joyland Roofing, we install, repair, and maintain EPDM, TPO, and modified bitumen flat roofing systems designed to protect your building and minimize operational disruptions.
Whether your property needs a full replacement, ongoing maintenance, or troubleshooting for persistent leaks, our team brings decades of experience in installing long-lasting commercial flat roofs across Pennsylvania.
Durable, Energy-Efficient, and Built to Protect Your Property Year-Round.
Commercial properties rely on flat and low-slope roofing systems that can withstand heavy use, weather exposure, and long-term performance demands.
Joyland knows Commercial Flat Roofing
Flat roofs are roofing systems with very low or no slope, commonly found on commercial buildings, industrial facilities, retail centers, multifamily properties, and institutional structures. Because water drains more slowly on low-slope surfaces, flat roofs require specialized materials that resist ponding water and prevent leaks.
Flat Roofing Requires Expertise
Traditional roofing materials like asphalt shingles cannot protect a low-slope surface. Flat roofs must be installed with continuous membranes, professional sealing, and proper drainage design to ensure long-term performance.
Flat roofs are common on warehouses, offices, and retail buildings. Because water drains slowly, they require advanced materials that resist ponding. We know your roof is a critical asset. Our team brings technical knowledge to ensure your building remains dry and safe.
Commercial Flat Roofing Systems We
Install
Modern commercial membranes are engineered for extreme durability and weather resistance.
We offer the industry's top-performing options to suit your specific needs:
EPDM/Rubber Roof
Strong, Reliable, and Ideal for Large Commercial Surfaces
EPDM is the most widely used commercial flat roofing material thanks to its durability and cost-effective performance.
- Excellent resistance to UV rays and weathering
- Large membrane sheets reduce seams and leak points
- Flexible in cold temperatures
- Available in black or white (energy-saving) membranes
Best for: Warehouses, manufacturing buildings, office complexes, and large commercial roofs.
Durable, Reliable, and Perfect for Large Facilities
EPDM remains a top choice for commercial properties due to its long-term resilience and value.
- Superior resistance to UV radiation and aging
- Large sheets minimize seams and potential leaks
- Stays flexible during harsh winter freezes
- Available in black or white (reflective) options
Best for: Distribution centers, factories, office parks, and expansive commercial footprints.
#2 - TPO (Thermoplastic Polyolefin)
Energy-Efficient, Welded Seams, Modern Performance
TPO is a lightweight, reflective membrane known for its cooling benefits and strong heat-welded seams.
- Highly reflective surface reduces cooling costs
- Welded seams create watertight protection
- Resistant to algae and dirt buildup
- Popular for buildings seeking energy efficiency
Best for: Retail centers, medical facilities, schools, and commercial properties with sustainability goals.
- Highly reflective surface reduces cooling costs
- Welded seams create watertight protection
- Resistant to algae and dirt buildup
- Popular for buildings seeking energy efficiency
Best for: Retail centers, medical facilities, schools, and commercial properties with sustainability goals.
Energy-Efficient, Welded Seams, Modern Performance
TPO is a lightweight, reflective membrane known for its cooling benefits and strong heat-welded seams.
#3 - Modified Bitumen Roofing (MBR)
Reinforced Asphalt Membrane for Tough Conditions
Modified bitumen is an asphalt-based membrane strengthened with polymers for improved flexibility and durability.
- Available in self-adhered or torch-down systems
- Granulated surfaces provide UV protection
- Excellent puncture resistance
- Long-standing choice for commercial roofs
Best for: Small commercial buildings, utility structures, walkable surfaces.
- Available in self-adhered or torch-down systems
- Granulated surfaces provide UV protection
- Excellent puncture resistance
- Long-standing choice for commercial roofs
Best for: Small commercial buildings, utility structures, walkable surfaces.
Reinforced Asphalt Membrane for Tough Conditions
Modified bitumen is an asphalt-based membrane strengthened with polymers for improved flexibility and durability.
We Can Help!
Not Sure Which System You Need?
We provide free inspections and consultations so you can understand what's needed on your commercial flat roof.
Commercial Customer Reviews and Recent Jobs
Food Production Facility Flat Roof Installation
Client: Westfield Egg Farm
Project year: 2024
Square footage: 9,000
Roof system: Reflective TPO with Insulation
Warranty: 20-year No-Dollar-Limit
Cost: $60,000
Location: New Holland, PA
Roofing Problems: George Weaver, the owner of Westfield Egg Farm, came to us needing advice on the roof at his production facility. The existing roof had been coated with a white coating which was beginning to peel off, with water ponding and soft spots in the plywood roof deck.
Solution: George was looking for a long-term fix for this roof, so we advised him to consider an overlay TPO roof system. We were able to install a 20-year No-Dollar-Limit warranted TPO system for him, making sure to address any damaged roof deck pieces before laying the new system out. The roof had an internal drain system for water run-off, so we provided all new drains to make sure that the entire roof system would last as intended. To prevent water ponding, we increased the slope in some spots to help water drain off the roof properly.
Outcome: The project was completed within 3 days from start to finish. The manufacturer’s inspection passed with no issues, and this roof system will provide decades of leak-free performance.
Commercial Office/Warehouse Roof
Client: Details Landscaping
Project year: 2024
Square footage: 1,200
Roof system: Reflective TPO with Tapered Insulation
Warranty: 20-year No-Dollar-Limit
Cost: $22,000
Location: Harrisburg, PA
Roofing Problems: The roof had an EPDM rubber system which was leaking, under which was a few inches of tar roofing. There was severe water ponding on this roof, causing weight overload concerns and ice problems in the winter.
Solution: Being a young business owner, Michael wanted to take care of it once and do it right for the long term. We removed all the old roofing down to the wood roof deck. Due to the extensive leaks, some boards had to be replaced. We installed a 4” base layer of PolyISO rigid insulation, and then put a tapered/sloped substrate on top of that to prevent water ponding and ensure good water runoff. We also installed a new pipe through the roof, along with the white TPO mechanically attached membrane system.
This roof had a short parapet wall around it on 3 sides. We ran the TPO up and over the top of the wall, and installed a new black metal wall coping as a final trim cap.
Outcome: Michael has a dramatic increase in building energy efficiency, and we were able to fix the water ponding issue while providing the new roof. We included our 20 year No Dollar Limit warranty on this roof. The work was completed in one day and passed warranty inspections with no issues
Warehouse Roof Replacement
Client: Natural Stoneworks
Project year: 2024
Square footage: 10,000
Roof system: Reflective TPO with Insulation
Warranty: 20-year No-Dollar-Limit
Cost: $87,000
Location: Lancaster, PA
Roofing Problems: Don had multiple leaks across the warehouse roof. After patching and repairing for years, he needed a replacement before the structural integrity of the roof became compromised. Water was leaking onto inventory, causing staining and labor costs in cleanup, moving products around, and trying to contain the water.
Solution: After inspecting the roof and examining the existing roof system, we provided Don with a quote to install a new commercial, 20-year warranted TPO membrane system. We installed a rigid insulation substrate, providing a significant improvement in energy savings as a part of the new roof system.
The logistics of the project were a challenge, as we needed to keep the space around the building open for traffic, while still disposing of the roofing debris into our dumpsters. We coordinated this with Don and the job went very smoothly.
Outcome: The project was completed within 4 days from start to finish. Improved insulation value will mean ongoing energy savings, and the system warranty ensures long-term protection and peace of mind
Store/Warehouse Metal Roof Replacement
Client: Windsor Distributing Inc.
Project year: 2024
Square footage: 16,250
Roof system: Corrugated metal
Warranty: 20-year No-Dollar-Limit
Cost: $60,000
Location: Hamburg, PA
Roofing Problems: Troy came to Joyland asking for an assessment and quote on his distribution warehouse roof. He had leaks in multiple spots throughout the building both in the retail side and in the warehouse. The existing roof was metal panels fastened with nails, and 2 layers of coating on top of that. The coatings were worn out, the fasteners were coming loose, and the seams were compromised. He had been offered a quote to re-coat the roof. We advised him against that, because of the level of deterioration on the existing coatings. That was also going to more expensive than just replacing the metal.
Solution: Joyland Roofing gave him a quote to completely replace the metal roof with a new corrugated metal roof system. This was truly the best way to solve the problems, because a 3rd coating would have had questionable longevity (possibly shorter than 10 years).
Outcome: Troy got a fully new metal roof system in white color. We included snow guards along the bottom edges. No leaks, a new reflective roof to improve the look and function of his building. We were able to do the work from start to stop within 5 days.
Why Flat Roofs Fail-and How We Prevent it
Commercial systems often fail early due to preventable technical errors or neglect.
Drainage & Ponding
Clogged drains cause heavy ponding that stresses the structure and voids many roof warranties.
EPDM
issues
Older rubber can pull away from edges over time. We use modern standards to manage movement.
Termination point failures
Terminations along walls can crack or pull away. We use reinforced tools to keep points secure.
Flashing Failures
Areas around HVAC units and pipes are vulnerable. We ensure these spots are sealed tightly.
Wrong repair materials
Using residential-grade products on flat surfaces results in fast degradation of the system.
Membrane installation
Inexperienced crews often fail to create watertight seams, leading to hidden building leaks.
Where Experience Shines
Joyland has crews with decades of commercial flat roofing experience. We often find roofs leaking early - or needing replacement - because of widespread water saturation. A well maintained commercial flat roof should last 30+ years, but many fail at 20 years or less due to improper or incomplete maintenance. It's important to stop a leak on a flat roof early, before it spreads and saturates insulation or the roof deck.
Joyland is a manufacturer-certified flat roof contractor. We have the training and expertise to properly assess a flat roof and recommend cost-saving repairs or replacement options.
Poor drainage and ponding water
Incorrect membrane installation or weak seams
Incompatible materials
Cracked or shrinking membranes
Damaged flashing or improper terminations
Damaged flashing or improper terminations
Understanding Each Roof Type’s Advantages & Challenges
Flat roofs can last decades when installed correctly with proper slope design, drainage, and high-quality membrane systems.
Click here to see a longevity comparison chart for flat roof vs. other materials.
PROS
- Cost-effective for most budgets
- Widest range of colors and styles
- Easier and faster to repair than metal or slate
EPDM (Rubber Roofing)
PROS
Membrane longevity
Flexible membrane for tight spaces
Cost effective
Easy to repair
Heating cost reduction
CONS
Low puncture resistance
Black/grey color only
Seams deteriorate over time
Higher cooling costs (black absorbs heat)
TPO (Thermoplastic Roofing)
PROS
Superior Energy Efficiency (Cool Roof)
Heat-Welded Seams
Good Durability and Impact Resistance
Color Options
Lightweight and Faster Installation
CONS
Questionable Longevity (Newer Tech)
Susceptible to Heat
Slippery When Wet/Icy
Requires Professional Installation
Mod Bit (Modified Bitumen)
PROS
Excellent Puncture and Foot Traffic Resistance
Ease of Repair
Superior Waterproofing (Multi-Layer)
Fire/Wind Resistance
CONS
Shorter Lifespan
Heat Absorption/Energy Loss
Installation Safety and Fumes (Torch-Down)
Vulnerability to Ponding Water
Watch a Flat Roof Installation in a Minute
We strive to make every commercial flat roofing project efficient. This requires coordination of heavy equipment, material handling, and waste removal. Our onsite supervisors direct the crew and perform constant quality checks to ensure the installation meets our high standards. By keeping the job site organized, we minimize disruption to your staff and customers. See our process in action through project videos highlighting speed, safety, and technical precision.
A Reliable Flat Roof Requires More Than Just a Membrane
A high-performance roof is a complete assembly of layers working in harmony to keep water out.
Key Components Include
Substrate / Roof Deck
We carefully remove old roofing layers to expose a clean, sound foundation that protects the long-term structural integrity of your professional facility.
Tapered Insulation
By repairing damaged areas and installing sloped insulation, we ensure proper water flow toward drains and eliminate all recurring standing water issues.
Cover Board
A high-performance cover board is installed to safeguard the insulation and create a solid, reliable base for the longevity of your new roofing system.
Membrane
Using specialized tools and proven techniques, our team installs your selected membrane system with exacting precision and high-level quality controls.
Flashings and Seams
Close attention is given to every detail, ensuring all seams, edges, and transitions are fully sealed and watertight for maximum building protection.
Drains / Scuppers
Clear, upfront pricing guides drainage upgrades designed to improve performance and protect your roof for many years through every season and storm type.
Commercial Flat Roof Warranties
Your roof should protect you for over 30 years with the right care. Manufacturers offer different warranty levels based on a contractor's certification. Because commercial projects are large investments, choosing a high-level warranty is a smart way to protect your business from the financial burden of future system failures.
Commercial Flat Roof Warranties We Offer
| Warranty Type | Scope and Lifespan | Typical Cost |
|---|---|---|
| No-Dollar-Limit System | Generally cover both manufacturer defects and contractor workmanship defects, with no dollar limit on the costs for repairs. These warranties are typically 15, 20, 25, or 30 years, and may be prorated. Longer warranty terms come with extra costs for upgraded materials. | .16-.20 cents per square foot, or a minimum of $1200. |
| Membrane Only | This warranty type is very limited in scope, covering only manufacturer defects in the roof membrane layer itself, and excluding system components such as flashings, termination, substrates, workmanship defects and more. Terms from 10-30 years are typical. | $200-$800 total |
| Hail/Cut/Punctures | Coverage of hail damage, or cuts/punctures caused by foreign objects or traffic can be added to a system warranty. Some restrictions apply but this can be a good addition in storm-prone areas. | $.04-$.06 cents per square foot |
| Extended Wind Speed | Can increase eligibility of coverage from the standard 55 MPH to up to 100 MPH. Is useful in coastal regions or other windy areas. Terms are typically 5-20 years. | $.04-$.40 cents per square foot |
We’ll walk you through the best options based on durability, efficiency, and overall value.
Joyland Commercial Warranties
We offer leading No-Dollar-Limit manufacturer's warranties
- Up to 30 years coverage materials and workmanship
- Factory Trained and Certified
- This ensures your roof is protected for decades, not just years.
What to Look for in a Commercial Roof Warranty
Membrane Thickness
Selecting heavy-duty .060 or .090 membranes is a smart move because they last far longer than residential grades. That extra thickness provides the durability you need to handle our unpredictable local weather and any random debris.
Workmanship coverage
You definitely want a warranty that covers both the materials and the actual labor to install them. This dual protection ensures that if we make an installation mistake, it gets fixed on our dime, rather than yours.
Seam & Flashing Coverage
Since these are often the weakest spots on a system, you have to ensure they're included in your plan. It saves you from massive, surprise bills if an edge fails or if a pipe penetration starts to leak over time.
Coverage Terms
Non-prorated warranties are the preferred choice for long-term value. Unlike prorated versions, their value doesn't drop as your roof gets older. It keeps your whole investment safe and sound for the entire life of the system.
Maintenance clauses
To keep your warranty alive, you have to stick to annual inspections. We will help you stay on top of these essential checks so you never lose your coverage because of a missed deadline or a simple maintenance slip-up.
Also, any maintenance or repairs done to a warranted system must be done by a factory-certified contractor.
Which Commercial Flat Roof Material is Best?
| Factor | EPDM (Rubber) | TPO (Thermoplastic) | Modified Bitumen (Asphalt |
|---|---|---|---|
| Typical Lifespan | 25-30+ Years (Proven) | Low (Adhered/Ballasted) | 15-20 Years (Shorter) |
| Puncture Resistance | Low (Tears easily) | Medium (Good) | High (Thick, Multi-Layer) |
| Energy Efficiency | Low (Black absorbs heat) | High (White reflects heat) | Low (Dark absorbs heat) |
| Temperature Cycling | Good (Highly Flexible) | Excellent (Heat welded seams) | Good (Polymer enhanced) |
| Cost (Initial) | Moderate | Low | Low to Moderate |
| Installation Risk | Low (Adhered/Ballasted) | Low (Hot-air weld) | High (Torch-down risk) |
Flat Roof Lifespan Comparison
25-35
Years Expected Lifespan
Fixed Skylight
20-30
Years Expected Lifespan
Manual Vented Skylight
20-30
Years Expected Lifespan
Electric/Solar Vented Skylight
The Joyland Recommendation:
- If Lifetime Value & Proven Track Record is Key: You will find that EPDM and TPO are both fantastic choices. While EPDM has a slightly longer history in the industry, both have been proven to deliver long-lasting protection. EPDM is often preferred for its ease of repair, while both offer the durability you expect from a professional installation.
- If Energy Savings & Aesthetics are Key: We suggest going with TPO. Its bright "Cool Roof" white surface is excellent for lowering your summer cooling expenses. To give you total peace of mind, we only partner with high-quality TPO manufacturers to ensure your system never suffers from the formula failures found in cheaper alternatives.
- If Puncture Resistance & Access/Traffic are Key:
Modified Bitumen is likely your best bet. It's the ideal choice for roofs with heavy foot traffic or those located near tree lines because of its incredible toughness. If you prefer EPDM or TPO but still need that durability, we can easily add rooftop pavers or walk pads to protect the membrane.
What Your Neighbors Say
Ready to Explore Flat Roofing Options?
Frequently Asked Questions
Are you certified to install commercial flat roofing systems?
Yes, we're a GAF Master Elite Contractor, a prestigious designation held by only the top 2% of roofers in North America. This allows us to provide specialized commercial flat roofing installations backed by the GAF Golden Pledge. This certification ensures our team is factory-trained in the latest membrane technologies and safety protocols.
How do I get an estimate for my flat roofing project?
Just give us a call or fill out our online form! We’ll schedule a time for one of our experts to visit your site. We’ll perform the full video inspection and usually have a clear, easy-to-understand flat roofing quote ready for you within 48 hours. It’s the fastest way to get a professional look at your roof's health.
Is EPDM or TPO better for commercial flat roofing in PA?
Click to Watch VideoBoth are excellent, but the choice depends on your goals. EPDM is a time-tested flat roofing staple that handles Pennsylvania's temperature swings with ease. TPO is preferred if you want a "cool roof" that reflects heat. Our experts will evaluate your building’s specific needs to help you choose the most effective membrane.
Do you offer emergency flat roofing repairs?
Learn MoreYes, our team is equipped to handle urgent commercial flat roofing repairs to prevent interior water damage. We use professional-grade patches and sealants that integrate with your existing membrane. Because we understand that a leak can disrupt your home or business, we prioritize rapid response times and permanent, high-quality fixes.
What is the process for a flat roofing replacement?
We keep it simple: Analysis, Design, Budgeting, and Installation. After our video inspection, we design a commercial flat roofing system that fixes your specific issues. Once the contract is signed, we handle the tear-off, deck repairs, and installation quickly to minimize disruption to your business operations and get you back to work.
How long will a new flat roofing system actually last?
A properly installed and maintained flat roofing system should give you 20 to 30 years of service. Materials like EPDM are famous for their longevity in the PA climate, while modern TPO is catching up. The key to hitting that 30-year mark is regular maintenance, which Joyland can handle through our preventative service plans.
Does Joyland Roofing offer warranties for commercial flat roofing?
Our WarrantiesWe provide industry-leading warranties for every commercial flat roofing project. As a GAF Master Elite Contractor, we can offer the Golden Pledge warranty, which includes up to 30 years of workmanship protection. We also stand by our "Don't Pay a Penny til you're Pleased" promise, requiring $0 down for residential-scale projects.
