THE 10 BEST Modified Bitumen Roofing Services in PORTLAND, OR
| Business Name | Key Services | Best For | Address | Hours | PS Rating |
|---|---|---|---|---|---|
| Pacific West Roofing | Modified Bitumen Installation, PVC Roofing, Roof Repair & Maintenance | Flat Roof Specialists | Portland Metro Area | Monday-Friday: Business Hours | 4.8/5 |
| CentiMark Portland | Modified Bitumen, TPO, PVC, Metal Roofing | Large Commercial Projects | 3004 NE 181st Ave, Portland, OR 97230 | Monday-Friday: 8:00 AM – 5:00 PM | 4.6/5 |
| McDonald & Wetle | Modified Built-Up Roofing, Flat Roofing Systems | Industrial & Commercial Buildings | Portland Metro Area | Monday-Friday: Business Hours | 4.7/5 |
| Sawtooth Roofing | Roof Coatings, Modified Bitumen, Commercial Roofing | Roof Restoration & Maintenance | 5230 NE 109th Ave, Portland, OR | Monday-Friday: 8:00 AM – 5:00 PM | 4.5/5 |
| FOX Roofing & Construction | Modified Bitumen, BUR, Commercial Roofing | Family-Owned Service | Gresham/Portland Metro Area | Monday-Friday: Business Hours | 4.4/5 |
| Alpine Exteriors | Modified Bitumen, Flat Roofing, Residential & Commercial | Budget-Friendly Options | Portland, OR | Monday-Friday: Business Hours | 4.3/5 |
| Cutting Edge Contracting | Torch Down/Modified Bitumen, TPO, Metal Roofing | Commercial Properties | Clark County/Portland Area | Monday-Friday: Business Hours | 4.5/5 |
| ABC Roofing (Tecta America) | Built-Up Roofing, Modified Systems, Waterproofing | Long-Established Quality | Portland, OR | Monday-Friday: Business Hours | 4.6/5 |
| Bridgetown Roofing | Modified Bitumen, Commercial & Residential Systems | Eco-Friendly Solutions | Portland Metro Area | Monday-Friday: 8:00 AM – 5:00 PM | 4.4/5 |
| Oswego Roofing | Modified Bitumen, Metal Roofing, General Contracting | Residential & Commercial Balance | 17350 Boones Ferry Rd, Lake Oswego, OR 97035 | Monday-Friday: 8:00 AM – 5:00 PM | 4.3/5 |
#1. Pacific West Roofing – Best for Flat Roof Specialists
Key Highlights:
- Over 40 years of experience serving the Portland metro area with specialized flat roofing expertise
- Uses cold process modified bitumen installation that avoids hot tar and torches for safer application
- Offers 3-ply modified bitumen systems specifically designed for Pacific Northwest weather conditions
Pacific West Roofing has built an incredible reputation since 1980 as Portland’s go-to expert for flat roofing systems. They specialize in both residential and commercial modified bitumen installations. Their team understands the unique challenges of Portland’s rainy climate and recommends modified bitumen as one of the best options for the area.
What makes them stand out is their use of cold process installation methods. This approach is safer and cleaner than traditional hot tar applications. The company’s modified bitumen roofs are extremely durable and tear-resistant. They can withstand Portland’s weather extremes without losing their shape or cracking.
Pacific West Roofing takes pride in their detailed work and customer education. They walk clients through every step of the process. Their crews are highly trained and follow strict safety protocols. The company is also a certified contractor for multiple premium roofing brands, giving customers excellent warranty options.
#2. CentiMark Portland – Best for Large Commercial Projects
Key Highlights:
- Nationwide company with over 50 employees at the Portland location serving Oregon and Washington
- Full metal department for fabricating custom flashing, coping, and metal roof components
- Comprehensive warranties and top-tier safety standards for commercial and industrial properties
CentiMark Portland brings the power of a national roofing company with local expertise. They have been serving Portland area businesses for many years. Their team specializes in long-term commercial and industrial roofing solutions focused on value and peace of mind.
The Portland office handles all types of modified bitumen systems including both APP and SBS membranes. They understand the local climate challenges that Portland businesses face. With average rainfall of 43 inches per year and high humidity levels, proper roofing is critical. CentiMark’s contractors provide materials and installation designed to combat these conditions.
Their extensive experience with large commercial projects makes them ideal for warehouses, office buildings, and industrial facilities. They offer complete project management from initial inspection through final installation. The company also provides ongoing maintenance programs to extend the life of your modified bitumen roof.
#3. McDonald & Wetle – Best for Industrial & Commercial Buildings
Key Highlights:
- Nearly 100 years of roofing experience serving the Pacific Northwest since 1921
- Family-owned business with deep knowledge of modified built-up roofing systems
- 24-hour emergency leak repair service for commercial clients
McDonald & Wetle is one of Portland’s oldest and most trusted roofing contractors. They have been installing modified bitumen and built-up roofing systems for decades. Their experience spans almost a century of protecting commercial and industrial properties throughout Oregon and Washington.
The company specializes in modified built-up roofing that combines asphalt with polymers to create rugged bitumen. This creates multiple strong layers that form a thick, protective membrane. Their installations can last up to 20 years even in harsh weather conditions like hail and heavy rain.
McDonald & Wetle’s modified bitumen roofs also help reduce energy costs. Special coatings reflect the sun’s rays away from your building. The roof acts as an insulator, keeping warmth inside during winter and heat out during summer. Their team works as either a general contractor or subcontractor depending on your project needs.
#4. Sawtooth Roofing – Best for Roof Restoration & Maintenance
Key Highlights:
- Award-winning family-owned business serving Portland and Vancouver since 1995
- Specializes in silicone roof coatings that can extend modified bitumen roof lifespan by 10-25 years
- Offers no-cost initial roof inspections and manufacturer-backed NDL warranties
Sawtooth Roofing has built their reputation on providing sustainable and professional roofing solutions. They have over 23 years of experience working with modified bitumen and other commercial roofing systems. The company is particularly known for their expertise in roof coatings and restoration.
Their silicone roof coating systems can be applied directly to existing modified bitumen roofs. This approach can add decades of life to your current roof without full replacement. The coatings are versatile and work on various roofing materials including EPDM, metal, and asphalt built-up roofs.
Sawtooth’s process includes thorough roof inspection, detailed repair specifications, and professional cleaning before coating application. They design customized systems that address flashing details and repair any defects. Their work comes with impressive warranties direct from major manufacturers covering both labor and materials.
#5. FOX Roofing & Construction – Best for Family-Owned Service
Key Highlights:
- More than 13 years serving the Portland metro area with excellent customer satisfaction
- 100% labor and material guarantees on all commercial roofing work
- Customer-first approach with personalized services and competitive pricing
FOX Roofing & Construction takes a family-owned approach to commercial roofing services. They understand that dealing with roof problems is stressful for business owners. Their team specializes in taking that burden off your shoulders with expert modified bitumen installation and repair.
The company works on both new roof installations and damaged roof repairs across the Portland metropolitan area. They handle projects of all shapes and sizes for residential and commercial clients. FOX Roofing is licensed in Oregon and uses the latest technology and techniques for roof installation and repair.
What sets them apart is their commitment to customer service. They make sure clients receive not only the best quality products but excellent personal attention. The team offers flexible financing options tailored to your financial needs. This allows you to protect your property now without financial stress.
#6. Alpine Exteriors – Best for Budget-Friendly Options
Key Highlights:
- Works with any budget while maintaining high quality and professionalism
- Specializes in flat roofing systems including TPO, EPDM, and modified bitumen
- Insurance specialists who handle claims directly for stress-free processes
Alpine Exteriors is a Portland-based company that prides itself on being part of the community. They understand the challenges Oregon property owners face with weather and roofing needs. Their team provides tailored solutions for both residential and commercial flat roofing projects.
The company offers modified bitumen as one of their core flat roofing materials. Their systems are designed for strength, longevity, and low maintenance. Alpine’s modified bitumen roofs feature weather resistance against heavy rain, wind, and UV exposure. They also provide energy-efficient reflective coatings to reduce cooling costs.
Alpine Exteriors has earned the trust of over 150 satisfied customers based on online reviews. They offer free estimates and work directly with insurance companies when needed. Their estimators are highly trained insurance specialists who can manage the entire process. The team is committed to delivering quality experiences and keeping customers happy.
#7. Cutting Edge Contracting – Best for Commercial Properties
Key Highlights:
- Licensed, bonded, and fully insured for commercial roofing in Clark County and Portland
- Specializes in torch down/modified bitumen roofing for retail, gas stations, and strip malls
- Offers flexible financing with options up to 18 months same as cash
Cutting Edge Contracting focuses exclusively on commercial roofing needs in the Portland and Vancouver areas. They help businesses and commercial property owners build and replace roofs on all types of buildings. Their expertise with modified bitumen torch down systems makes them a top choice for commercial applications.
The company’s roofers are experienced and knowledgeable about all commercial roofing options. They ensure clients understand their choices before moving forward with any project. Cutting Edge works on retail stores, gas stations, strip malls, and more throughout the region.
Their commitment to quality is backed by an impressive 12-year labor warranty. This is one of the best warranties in the city. The team uses only the highest-quality roofing products on the market. They also provide liquid applied systems for long-term maintenance of existing modified bitumen roofs.
#8. ABC Roofing (Tecta America) – Best for Long-Established Quality
Key Highlights:
- Founded in 1951 with over 70 years of roofing experience in Portland
- Part of Tecta America, the nation’s leading commercial roofing contractor
- Combines local expertise with national resources, warranties, and bonding capacity
ABC Roofing has a long-standing reputation for quality workmanship and exceptional customer service. The company was founded by the Bolt family and has served Portland since 1951. They now operate as part of Tecta America while maintaining their local, personal touch.
The team works on a wide range of roofing systems including built-up roofing and modified bitumen. They provide complete commercial roofing services including inspection, maintenance, repair, and installation. ABC Roofing also handles waterproofing, fall protection installation, and below-grade waterproofing systems.
Their experience spans decades of new construction, roof replacement, and ongoing maintenance programs. Clients appreciate the high value ABC places on customer service and delivering quality end products. The company’s integrity and commitment to standing behind their work has earned them loyal customers for over 50 years.
#9. Bridgetown Roofing – Best for Eco-Friendly Solutions
Key Highlights:
- Over 40 years of combined professional experience in the Portland-Vancouver metro area
- Committed to environmentally friendly products and reducing carbon footprint
- Licensed and insured with industry-leading workmanship and product warranties
Bridgetown Roofing brings decades of expertise to residential and commercial roofing projects throughout Portland. They work with the most trusted regional and national eco-friendly companies and brands. The team strives to reduce environmental impact while delivering superior roofing solutions.
Their modified bitumen services include installation, repair, and maintenance for both flat and low-slope commercial roofs. Bridgetown uses the same quality materials as traditional built-up roofing but in a modified application. This creates a durable, cost-effective roof system that can handle Portland’s weather.
The company offers free estimates and honest assessments of your roofing needs. They walk clients through all available options before any work begins. Bridgetown’s goal is to help property owners protect their investment and gain peace of mind for decades. Their transparent communication keeps customers informed every step of the way.
#10. Oswego Roofing – Best for Residential & Commercial Balance
Key Highlights:
- Serving Lake Oswego and Portland since 1984 with full-service roofing expertise
- Family-owned company offering comprehensive services from start to finish
- Works with both residential and commercial clients with manufacturer-certified warranties
Oswego Roofing has been a trusted name in the Portland area for over 30 years. They are a family-owned, full-service roofing company licensed and bonded in both Oregon and Washington. Their client base ranges from residential homeowners to commercial property managers.
The company maintains and installs modified bitumen roofing systems along with metal roofing and other materials. They also handle general contractor services for work related to insurance claims. Oswego Roofing carries premium products from CertainTeed and GAF with strong warranty options.
Their team has been hand-picked for experience, competence, and courtesy. They purchase materials directly from manufacturers and pass savings to customers. Oswego Roofing promises no hidden charges and all-inclusive pricing from the initial quote. Their decades of experience mean they can handle any roofing challenge efficiently and professionally.
What is Modified Bitumen Roofing and Why is it Popular in Portland?
Modified bitumen roofing is a modern roofing system that combines asphalt with rubber or plastic polymers. This creates a flexible, waterproof membrane that is perfect for flat or low-slope roofs. The material is reinforced with fiberglass or polyester for extra strength and durability.
Portland’s climate makes modified bitumen an excellent choice for local buildings. The rainy weather and temperature changes require roofing that can handle moisture and thermal expansion. Modified bitumen roofs are highly waterproof and flexible enough to withstand deep freezes without cracking or becoming brittle.
The system typically consists of multiple layers for enhanced protection. Installation can be done using cold adhesive, hot asphalt, or torch application methods. With proper maintenance, modified bitumen roofs can last 20 years or more. They are also relatively easy to repair compared to other roofing systems.
How Much Does Modified Bitumen Roofing Cost in Portland?
The cost of modified bitumen roofing in Portland varies based on several factors. Most contractors charge between $4 to $8 per square foot for materials and installation. The total project cost depends on your roof’s size, complexity, and current condition.
Additional factors that affect pricing include roof accessibility, the number of penetrations, and whether a full tear-off is needed. Some roofs only require overlay installation which costs less. The type of modified bitumen you choose also matters. SBS membranes and APP membranes have different price points and installation requirements.
Getting multiple quotes from licensed Portland contractors is important. Most reputable companies offer free estimates and roof inspections. They can assess your specific situation and provide accurate pricing. Remember that cheaper isn’t always better when it comes to roofing. Quality installation and materials will save you money in the long run.
How Long Does a Modified Bitumen Roof Last in Portland’s Climate?
A properly installed modified bitumen roof in Portland typically lasts 15 to 20 years. Some high-quality systems with regular maintenance can exceed this lifespan. Portland’s climate actually works well with modified bitumen because the material is designed for wet, temperature-variable environments.
The key to longevity is proper installation and ongoing maintenance. Annual inspections help catch small problems before they become major repairs. Keeping the roof clean and clear of debris prevents water pooling and premature wear. Professional maintenance should include checking seams, flashing, and drainage systems.
You can extend your roof’s life even further with protective coatings. Silicone or acrylic coatings applied every 10-15 years can add another decade or more to your roof. These coatings also improve energy efficiency by reflecting UV rays. Regular professional inspections and prompt repairs ensure you get maximum value from your modified bitumen investment.