Commercial TPO Roofing in Seattle with Energy-Efficient Design
Commercial TPO roofing Seattle buildings need to deliver energy efficiency, durability, and reliable long-term performance. Our TPO roofing systems are designed to perform efficiently in the Puget Sound climate.
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TPO roofing. The cost-effective solution for your roof.
Our TPO roofing systems are designed to perform efficiently in the Puget Sound climate.
Why Choose Our Commercial TPO Roofing Company
Many commercial roofing issues result from inconsistent installation practices rather than material limitations. Our commercial TPO roofing company focuses on avoiding the problems property teams encounter most often: project delays, tenant disruption, poorly managed job sites, and leaks that return after installation.
Here is how we approach TPO roofing differently.
Leak-Free Performance Pledge
Documented QA to promote consistent installation quality and dependable leak protection.
Portfolio Care for PMs & Owners
Free roof audits, 3-year capital planning, and priority scheduling across your properties.
Clean Site Guarantee
Walkways kept clear, common areas protected, and daily cleanup completed to maintain a tidy, professional jobsite.
On-Time, On-Budget Scorecard
Transparent milestones, change orders, and progress photos. We start when promised and finish as bid.
Certified Crews, Modern Systems
Authorized installation of premium commercial roofing systems backed by ongoing training.
Warranty & Protection
20–30 year manufacturer warranties for qualifying new roof installs. See our Warranty & Protection page for more details.
Our Commercial TPO Roofing Services
We provide a full range of commercial TPO roofing installation and service solutions across the Puget Sound region. Whether managing a single property or a broader portfolio, our work is scheduled and coordinated with occupied buildings in mind, with clear scope development and transparent pricing.
TPO Roof Replacement — Complete tear-off and replacement with new TPO membrane, insulation upgrades when appropriate, and updated drainage components. Includes permit coordination, tenant notices, phased scheduling options, and project closeout documentation.
TPO Roof Repair — Targeted repair of seams, punctures, flashing details, and localized membrane conditions, addressing active leaks as well as developing issues that can lead to future water intrusion.
TPO Roof Maintenance — Scheduled inspections that identify early-stage wear before it develops into larger repair needs, including debris removal, drainage checks, seam review, and minor corrective work.
New TPO Installation — TPO roofing systems installed for new construction or building additions, coordinated with general contractors and project teams around construction sequencing, submittals, and inspections.
Emergency TPO Repair — Response for unexpected leaks, storm-related damage, or sudden membrane failure, focused on stabilizing the situation and protecting the building while determining next steps.
Final Cleanup and Jobsite Reset
Ongoing daily cleanup throughout the project and a final walkthrough to ensure the jobsite is clean, safe, and ready for normal operations.
Drainage and Gutter Improvements
Ensuring water moves off the roof properly to prevent ponding and future issues.
Flashing and Edge Metal Upgrades
Replacement or integration of flashing, edge metal, and penetration details to strengthen perimeter protection and support long-term leak prevention on commercial roof replacements.
New Roofing System Installation
Installation of the new commercial roofing system using certified methods and manufacturer-approved details, completed by an experienced commercial roof replacement contractor.
Substrate and Deck Evaluation & Repair
During commercial flat roof replacement, decking, insulation, and structural elements are evaluated and repaired as necessary to support the new roofing system, whether installed as a tear-off or overlay.
Roof Preparation and Selective Removal
When we replace a commercial roof, our approach depends on existing conditions and system design. Projects may involve a full tear-off or selective removal to properly prepare the roof, with clean, controlled debris handling to protect the building and surrounding areas.
More Than a Commercial TPO Roofing Company
A commercial TPO roofing system is only one part of your building’s long-term performance strategy. As a commercial roofing partner serving the Puget Sound, we support ongoing planning, maintenance, and system upgrades across your properties. We also offer:
Commercial PVC Roofing
Durable single-ply membrane with excellent chemical resistance and long-term waterproofing.
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Commercial Flat Roofing
Flat and low-slope roofing systems designed for long-term commercial performance.
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Commercial Roof Coating
Fluid-applied coating systems (silicone, acrylic, polyurethane) that restore aging roofs and extend service life.
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Meet Your Seattle Roofing Team
Meet the team responsible for delivering dependable workmanship and consistent project performance.
Ivan Prokopets
Rita Prokopets
Washington Weather Shield Team
Our Commercial TPO Roof Installation Process
Our commercial TPO roofing company in Seattle follows a predictable process that keeps decisions simple and progress visible. Here’s how we move from planning to completion.
Step 1: Schedule Your Free Roof System Evaluation
We visit the property, evaluate the existing conditions or project plans, and document current conditions with photos.
Step 2: Approve Your Scope and Project Plan
You receive a clear estimate, recommended scope of work, and timeline so expectations are established before the work begins.
Step 3: Installation, QA, and Project Closeout
Our crew completes the TPO roofing installation work, manages cleanup, and keeps you updated throughout the project. At closeout, you receive the documentation needed for warranty support and future roof planning.
The Advantages of a Properly Installed TPO Roof System
TPO roofing systems have become one of the most widely used commercial roofing solutions in North America. When properly designed and installed, a TPO roof system delivers reduced energy demand from its reflective membrane, heat-welded seam integrity for a continuous watertight barrier, lightweight yet durable construction, flexible insulation compatibility for energy-code compliance and drainage, adaptability for future repairs and modifications, and low maintenance requirements.
When installed by qualified commercial TPO roofing professionals using consistent quality-control practices, these benefits contribute to dependable protection built for Seattle’s wet climate and seasonal weather shifts.
Client Testimonials
Our work is measured not just in completed roofs, but in the confidence property managers, owners, and contractors feel throughout the process. These testimonials reflect that commitment.
I hired Ivan for a TPO roofing project, and I couldn’t be happier with the results. He stepped in on very short notice right before the rain was coming, which helped us avoid major issues. His work was professional, clean, and done exactly the way it needed to be.
Roman Gural
Washington Weather Shield replaced a metal and PVC roof on one of our custom Mercer Island homes and did an excellent job. Great communication, skilled crew, and top-quality work from start to finish. Highly recommend!
Remont Construction
Excellent roofing company! Washington Weather Shield just did an apartment building for us. Definitely our go to roofer going forward. Delivered a superior product in a timely manner and on budget as promised. Super professional every step of the way and great communication. Thank you Washington Weather Shield! Highly recommended! A++++
Mark Caldwell
What Clients Say About Our Roofing Work
When people search for a local commercial roof replacement company, they want steady communication and reliable results. See what Seattle businesses say about working with our commercial roofers.
Commercial TPO Roofing FAQs
What is a TPO roofing system?
A TPO roofing system is a single-ply thermoplastic membrane used primarily on low-slope commercial roofs. TPO stands for thermoplastic polyolefin roofing.
A commercial TPO roof installation typically includes insulation layers and a TPO roofing membrane that may be fully adhered, mechanically fastened, or induction welded depending on project requirements.
The seams are heat-welded to create a continuous watertight barrier. When installed by certified commercial TPO roof installers, the system delivers strong seam integrity and energy efficiency.
What is the most common roofing system used today in Seattle?
On commercial properties throughout Greater Seattle and the Puget Sound, single-ply membrane roofing systems are among the most common choices, particularly for flat and low-slope properties such as office buildings, warehouses, retail centers, and multi-tenant facilities. Single-ply membranes include options like TPO, PVC, and EPDM, with TPO roofing systems frequently specified because of their balance of energy efficiency, heat-welded seam strength, and cost-effectiveness in wet, rain-heavy climates.
Which TPO roofing manufacturers does Washington Weather Shield install?
Washington Weather Shield installs commercial TPO roofing membrane systems from GAF, Duro-Last, and Versico. We are certified installers for all three manufacturers, allowing qualifying systems to be installed in accordance with manufacturer requirements for warranty eligibility of 20-30 years.
We are also a GAF GoldElite™ Commercial Contractor, a certification awarded to contractors who meet GAF’s standards for commercial installation quality and training.
Manufacturer selection typically depends on project specifications, building conditions, and long-term performance goals. We recommend the TPO roofing membrane system that best fits the needs of the property.
What is a GAF roofing system?
A GAF roofing system refers to roofing materials manufactured by GAF, one of the largest commercial roofing manufacturers in North America.
In commercial TPO roofing, GAF produces TPO roofing membrane systems designed for low-slope buildings. When installed by certified commercial TPO roofing contractors, these systems qualify for manufacturer-backed warranties ranging from 20-30 years.
Washington Weather Shield is a GAF GoldElite Commercial Contractor, a certification held by a limited number of commercial roofing companies that meet GAF’s standards for training, installation quality, and ongoing performance. This designation allows us to install qualifying GAF commercial roofing systems in accordance with manufacturer requirements and offer eligible warranty options supported by GAF.
How do you protect your commercial roofing system?
Protecting a commercial roofing system begins with routine inspections and preventative maintenance designed to identify early signs of wear before they develop into larger issues. For commercial TPO roofing, this typically includes reviewing seams, flashing details, drainage paths, and rooftop penetrations up to twice per year, as well as after major weather events or rooftop modifications.
A well-maintained TPO roof system should include:
- Scheduled inspections to monitor membrane condition
- Prompt repair of seams, flashing details, or punctures
- Clear drainage pathways to help prevent standing water or ponding
- Proper management of rooftop equipment and penetrations
- Documentation of inspections, repairs, and maintenance activity
Working with an experienced commercial TPO roofing contractor for ongoing maintenance helps extend the lifespan of your TPO roofing membrane, support warranty compliance, and reduce the likelihood of unexpected leaks or emergency repairs.
What is a roofing system?
A roofing system is the complete assembly designed to protect a building from water intrusion and environmental exposure. It includes multiple components that work together as a unified barrier, rather than a single material layer — the membrane, insulation, substrate, flashing details, drainage components, and attachment method.
A commercial TPO roofing system typically includes:
- Insulation layers designed to support energy performance and drainage
- A thermoplastic polyolefin (TPO) roofing membrane
- Heat-welded seams that create watertight connections
- Flashing details at penetrations, edges, and transitions
A commercial TPO roofing system is engineered to work as a unified barrier, not just a surface layer.
What is the most efficient roofing system?
Energy efficiency in commercial roofing depends on insulation design, membrane reflectivity, and overall system configuration. In the Seattle and Puget Sound region, single-ply membrane systems are widely used on commercial properties, with TPO commercial roofing commonly selected for its reflective surface and heat-welded seams.
TPO membranes are often specified because they:
- Reflect solar heat, which can help reduce cooling demand
- Provide consistent watertight seam performance
- Allow flexible insulation configurations to meet energy code requirements
The most efficient system ultimately depends on building design, insulation levels, and long-term performance goals.
What is an EPDM roofing system?
An EPDM roofing system is a single-ply membrane made from synthetic rubber. It has been used on commercial flat roofs for decades.
Compared to TPO roofing systems, EPDM membranes typically:
- Do not provide a reflective white surface
- Use taped or adhesive seams rather than heat welding
- Offer strong performance in a variety of climate conditions
Both EPDM and TPO systems are used on commercial buildings, with TPO often favored for its balance of energy efficiency, durability, and performance.
What is the best metal roofing system?
Metal roofing systems can perform well on commercial buildings where roof slope, structural design, and detailing support proper drainage. Standing seam metal roofing systems are often selected when durability and long service life are priorities.
However, on many low-slope commercial buildings, TPO roofing systems are often preferred due to:
- Fully welded seam waterproofing performance
- Lighter system weight
- Simplified maintenance
The best system depends on slope, structure, and budget. A commercial TPO roofing company will help evaluate these factors before recommending an alternative.
What affects the price of commercial TPO roofing?
Commercial TPO roof installation costs depend on several factors, including the roof size, existing roof condition, system design requirements, and the level of work needed to achieve a durable, watertight installation — whether that involves targeted repairs or a full commercial TPO roof replacement.
The manufacturer selected for the TPO roofing system can also influence project cost. Different manufacturers offer varying membrane thickness options, system components, attachment methods, and warranty structures.
Common factors that affect cost include:
- Roof size (total square footage) and building configuration
- Commercial TPO roof repair vs commercial TPO roof installation
- Tear-off vs recover
- Manufacturer of the TPO roofing system
For the most accurate pricing, Washington Weather Shield recommends scheduling a commercial roof inspection so you can clearly evaluate TPO roofing membrane repair, restoration, or full replacement options based on your building’s condition.
Do you offer written estimates and detailed scopes of work?
Yes. Washington Weather Shield provides written estimates and detailed scopes for commercial TPO roofing projects. Your proposal outlines system recommendations, scope, and warranty coverage so you can compare bids clearly and make a confident decision when selecting a commercial TPO roofing contractor.
How do contracts and payment schedules work for commercial roofing projects?
At Washington Weather Shield, contracts are signed before work begins. Our standard payment schedule is 50% upfront to order materials and secure installation dates, with the remaining 50% due upon completion. For larger commercial TPO roofing installation or replacement projects, progress payments may be requested based on project size and timeline.
Are your commercial roofing contractors licensed and certified?
Yes. Washington Weather Shield is fully licensed, and our commercial roofing team is trained and certified to install flat and low-slope systems using manufacturer-approved methods for long-term performance and warranty compliance. We are certified with top commercial roofing manufacturers, including GAF (TPO & PVC), Versico (TPO & PVC), Duro-Last (PVC), and GE Enduris—and we’re especially proud to hold GAF GoldElite™ Commercial Contractor status, a highly selective certification level.
What training do your roofing crews receive each year?
At Washington Weather Shield, our commercial roofing crews complete ongoing hands-on training to stay current on the latest installation methods, safety standards, and manufacturer requirements. This includes training and education through top roofing manufacturers such as GAF (TPO & PVC), Versico (TPO & PVC), Duro-Last (PVC), and GE Enduris, helping ensure every roof we install meets professional standards and warranty guidelines.
Do you work with manufacturer-backed roofing systems?
Yes. Washington Weather Shield installs manufacturer-backed commercial roofing systems. All of our roofing systems are built using trusted, manufacturer-approved materials and installation methods to support long-term performance and warranty eligibility.
How do I know I’m hiring a qualified commercial roofer?
A qualified commercial roofer should have proven experience with commercial flat and low-slope roofing, proper licensing and insurance, strong safety practices, and the ability to provide detailed scopes, references, and warranty options. At Washington Weather Shield, we meet these standards through our commercial roofing expertise, manufacturer certifications, and our commitment to professional installation methods and long-term roof performance.
Our Service Areas
Providing commercial roofing services in Seattle and surrounding communities — 47 cities across nine counties.
Tap a city to see it on the map.
Cities
- Seattle
- Tukwila
- Bellevue
- Renton
- Kent
- Auburn
- Federal Way
- Redmond
- Kirkland
- Bothell
- Everett
- Lynnwood
- Edmonds
- Mountlake Terrace
- Shoreline
- Burien
- SeaTac
- Des Moines
- Issaquah
- Sammamish
- Mercer Island
- Newcastle
- Maple Valley
- Covington
- Black Diamond
- Snoqualmie
- North Bend
- Carnation
- Duvall
- Woodinville
- Mill Creek
- Lake Forest Park
- Kenmore
- Fife
- Milton
- Puyallup
- Sumner
- Bonney Lake
- Lakewood
- University Place
- Steilacoom
- Gig Harbor
- Bremerton
- Port Orchard
- Silverdale
- Olympia
- Lacey
Counties We Serve
Our Service Areas
Providing commercial roofing services in the Puget Sound and Greater Seattle areas.
- Bellevue
- Seattle
- Tacoma
- Kent
- Renton
- Federal Way
- Auburn
- Redmond
- Olympia
- Kirkland
- Tukwila
- Puyallup
- Lakewood
- Burien
- SeaTac
- Everett
- Chehalis
- Bellingham
- Marysville
- Lacey
- Des Moines
- Kenmore
- Black Diamond
- Sumner
- Sammamish
- Shoreline
- Bothell
- Bremerton
- Edmonds
- Lynnwood
- Issaquah
- Parkland
- University Place
- Spanaway
- Maple Valley
- Mercer Island
- Covington
- Mukilteo
- Centralia
- Enumclaw
- Snoqualmie
- Gig Harbor
- Fife
- Shelton
- Milton
- Pacific
- Bonney Lake
Working Project
Finished Project
Request a Commercial TPO Roofing Estimate
If you manage or own a commercial property in Seattle or the Puget Sound and need TPO roofing installation, targeted repairs, full TPO roof replacement, or portfolio planning support, request a commercial TPO roofing estimate today. Tell us your roof type, building size, occupancy constraints, and urgency, and we will respond with clarity, a defined scope, and a predictable plan.