Flat roofs are a practical choice for both homes and businesses across Maryland. You see them on commercial warehouses, townhomes in Baltimore, and residential additions in the suburbs. They look simple from the ground, but choosing the right material for a flat roof is anything but simple. Each roofing type performs differently, costs vary widely, and long-term durability depends on proper installation. RoofPRO works with all major flat roofing systems and helps Maryland property owners select the option that delivers the best mix of longevity, efficiency, and value.
If you’re considering a new flat roof or thinking about replacing your current one, it pays to understand your options.
Why Choosing the Right Flat Roof Material Matters
Flat roofs face unique challenges compared to pitched systems. Water doesn’t run off as easily, so ponding is common after heavy rain. This puts stress on seams, coatings, and drainage systems. In summer, heat can cause some materials to expand and contract, leading to cracks or blisters.
The material you select determines how well your roof handles these conditions. Some systems are more flexible, others resist UV rays, and a few stand out for their insulation value. A carefully chosen roof can last 30 years or more, while a poor choice could leave you replacing it again in half the time.
The Most Popular Flat Roof Types in Maryland
Maryland property owners have access to several flat roofing systems, each with strengths and limitations. RoofPRO installs and repairs all of the following options.
Built-Up Roofing (BUR)
Built-up roofing is one of the oldest flat roofing methods. It uses multiple layers of bitumen and reinforcing fabric, finished with a gravel or asphalt surface.
- Pros: Very durable, affordable, resistant to foot traffic
- Cons: Heavy, requires more labor, not as energy-efficient as newer systems
BUR works well for large commercial buildings where strength and cost-effectiveness are priorities. Built-Up Roofing Lasts 15 to 20 years.
Modified Bitumen Roofing
Modified bitumen is a single-ply system reinforced with fiberglass or polyester. Installation methods include torch-down and self-adhered sheets.
- Pros: Flexible, handles temperature swings well, good for Maryland’s seasonal climate
- Cons: Susceptible to punctures, requires professional handling for torch applications
This option is popular for residential flat roofs and small commercial structures. Modified Bitumen Lasts 15 to 20 years.
EPDM Rubber Roofing
EPDM is a synthetic rubber membrane, usually black. It has been widely used on commercial properties for decades.
- Pros: Long lifespan, cost-effective, easy to patch or repair
- Cons: Absorbs heat unless coated, seams need attention over time
Homeowners appreciate EPDM for its straightforward installation and budget-friendly price. EPDM Lasts 20 to 30 years.
TPO Roofing
TPO, or thermoplastic polyolefin, is a single-ply membrane with a bright white reflective surface. It has grown in popularity as an energy-efficient option.
- Pros: Reflects UV rays, resists chemicals, lightweight
- Cons: Seams must be heat-welded, quality depends on the manufacturer
TPO is common in both residential and commercial projects, especially when energy savings are a priority. TPO Lasts 20 to 30 years.
PVC Roofing
PVC membranes are heat-welded, reinforced, and exceptionally durable. They have been trusted in commercial roofing for years.
- Pros: Long-lasting, energy-efficient, resistant to chemicals and grease
- Cons: Higher upfront cost
For restaurants or industrial buildings where chemical exposure is a concern, PVC is often the best choice. PVC Lasts 20 to 30 years.
Spray Foam Roofing (SPF)
SPF involves spraying a polyurethane foam directly on the roof surface, then sealing it with protective coatings.
- Pros: Seamless waterproof barrier, very high insulation value, customizable thickness
- Cons: Requires regular recoating, professional installation only
SPF is ideal for commercial properties looking for both energy savings and leak resistance. Spray Foam Lasts 20 to 30 years.
Metal Roofing for Flat or Low-Slope Roofs
While less common for true flat roofs, standing seam or flat-seamed metal panels can work on low slopes with proper waterproofing.
- Pros: Extremely long lifespan, recyclable, sleek appearance
- Cons: More expensive, drainage design must be correct
For homeowners who want durability above all else, metal can be an excellent investment. Metal Lasts 30 to 50 years.
Material | Typical lifespan | Installed cost (per sq ft) | Seams | Energy performance | Maintenance level | Best for |
TPO | 20 to 30 years | Moderate | Heat-welded | High reflectivity | Low to medium | Retail, warehouses, schools |
PVC | 20 to 30 years | Moderate to higher | Heat-welded | High reflectivity | Low to medium | Restaurants, labs, chemical exposure |
EPDM | 20 to 30 years | Lower to moderate | Tapes/adhesives | Black or white options | Low to medium | Multifamily, offices, residential low-slope |
Modified Bitumen | 15 to 20 years | Moderate | Torched, cold-applied, or self-adhered | Varies by cap sheet | Medium | Rowhomes, small commercial, foot traffic |
BUR (Built Up) | 15 to 20 years | Moderate to higher | Multiple plies with asphalt | Reflective coatings optional | Medium | Institutional or historic structures |
SPF (Spray Foam) + coating | 20 to 30 years (with recoats) | Moderate | Seamless | Excellent insulation | Medium | Complex roofs, many penetrations |
Liquid coatings (silicone, acrylic, urethane) | 10 to 20 years | Lower to moderate | Seamless | High reflectivity (white) | Low to medium | Restoration over sound substrates |
Standing seam metal (low-slope areas) | 30+ years | Higher | Mechanical seams | Reflective finishes available | Low | Transitions, accent areas, ≥ 2:12 slopes |
Why Choose RoofPRO for All Types of Flat Roofing in Maryland
RoofPRO has served Maryland property owners for years with proven expertise in flat roofing systems. Whether you need a new EPDM roof for your townhouse, a spray foam application for a warehouse, or PVC replacement for a restaurant, our team brings the skills and certifications to complete the job right.
- Certified installers for EPDM, TPO, PVC, and other leading systems
- Warranty-backed installations for peace of mind
- Local knowledge of Maryland’s climate and building codes
- Free inspections and clear estimates before any work begins
Our portfolio includes residential flat roofs in Rockville, commercial buildings in Baltimore, and multi-family properties throughout Montgomery and Prince George’s counties.
Service Areas Across Maryland
We provide flat roofing services throughout the state, including:
- Baltimore
- Columbia
- Silver Spring
- Bethesda
- Rockville
- Frederick
- Annapolis
- Surrounding Maryland communities
For homeowners and businesses outside these core areas, RoofPRO still offers consultations to determine availability.
Contact Us For a Free Flat Roofing Consultation
Flat roofs require careful planning, quality materials, and expert installation. From EPDM to spray foam, each roofing system has benefits and tradeoffs. The right choice balances lifespan, cost, and efficiency with the specific needs of your property.
RoofPRO helps Maryland property owners make that choice with confidence. Our team installs and maintains all major flat roof systems, bringing proven experience and customer-focused service to every project.
Schedule your free flat roof consultation with RoofPRO today and find the roofing system that will protect your property for decades.