Roof replacements that keep your building protected
Our commercial roof replacement Seattle service delivers quiet, organized installs with clear communication and predictable timelines.
A team that cares for your building
A commercial roof replacement in Seattle should be straightforward and well-managed. Our team delivers clear updates, strong workmanship, and clean job sites before they leave. You get a dependable commercial roofing replacement contractor who respects your time and budget.
Our process is designed for long-term performance across all commercial roof replacements.
Here’s what sets our approach apart.
Leak-Free Performance Pledge
If our work leaks, we're there in 24 hours. No cost to you.
Tenant-First Install Program
Quiet hours as needed, daily cleanup, and clear tenant notices. Your occupants will hardly notice we're there.
Cleaner Site Guarantee
We keep walkways clear, protect common areas, and complete daily cleanup to leave your property tidy before we leave.
On-Time, On-Budget Scorecard
Transparent milestones, change orders, and progress photos. We start when promised and finish as bid.
Certified Crews, Modern Systems
Manufacturer-certified teams install TPO, PVC, EPDM, metal, and coatings. Every project has a dedicated crew lead managing the work and communication.
Warranty & Protection
Your new roof comes with straightforward warranty coverage and a team that stands behind the work. Learn more in our Warranty & Protection details.
Everything your roof needs in one place
Our commercial roof replacement in Seattle covers everything from assessment to final cleanup.
Here’s what’s included in every commercial roof replacement process.
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.
Related Services
A good way to support a full commercial roof replacement Seattle project is to pair it with proactive maintenance and repair services. We offer a full range of commercial roofing solutions to help protect your investment before, during, and after replacement.
Additional commercial roofing services include:
Commercial Roof Repair
Targeted commercial roofing fixes that stop leaks and prevent further damage.
- Leak patching
- Flashing and membrane repairs
- Storm and impact damage
New Roof Installations
New commercial roof installations built for long-term performance and reliable drainage.
- Full system setup
- Material recommendations
- Long-life commercial roofing solutions
Commercial Roof Cleaning
Routine roof cleaning to protect drainage and extend roof life.
- Debris removal and surface clearing
- Gutter and scupper checks
- Condition notes for future planning
From estimate to final walkthrough
Meet the team behind our commercial roof replacement services, managing every commercial roof replacement in Seattle with consistent communication and clean execution.
Ivan Prokopets
Rita Prokopets
Washington Weather Shield Team
From estimate to final walkthrough
Our commercial roof replacement process is designed to keep every phase clear and predictable. You receive steady communication, clean job sites, and a schedule that stays on track from start to finish. This keeps the entire project easy to follow, especially when managing a local commercial roof replacement in Seattle. Here’s how the process works.
Step 1: Schedule your free estimate
We visit the property, review your goals, and assess the roof so you get a clear plan for your commercial roof replacement.
Step 2: Approve your project plan and timeline
You receive a detailed estimate outlining scope of work and system. Everything is explained upfront so the work aligns with your operations.
Step 3: Replacement and daily on-site coordination
Our crew completes the installation, manages daily cleanup, and provides regular updates. You always know what’s complete and what’s coming next.
Timely replacement helps prevent bigger problems
A proactive commercial roof replacement reduces the risk of unexpected repairs, water intrusion, and operational disruptions. Addressing roofing issues early helps protect your building from costly damage and avoids the stress of emergency fixes or tenant complaints.
Replacing a failing roof restores waterproofing performance, maintains proper insulation, and protects the building interior. With a dependable commercial roof replacement contractor, you stay ahead of problems and keep your property protected for the long term.
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.
FAQs on Commercial Roof Replacement
What is the most common commercial roofing system?
The most common type of commercial roofing is a single-ply membrane system installed on flat or low-slope roofs—typically TPO (Thermoplastic Polyolefin) or PVC (Polyvinyl Chloride). These systems are popular because they are durable, energy-efficient, and perform well across a wide range of commercial applications.
Roof coating systems are also a common option for certain buildings. Coatings are often used to extend the life of an existing roof, improve waterproofing, and reduce heat absorption without a full roof replacement, making them a cost-effective alternative when the underlying roof is still in serviceable condition.
How can I estimate the cost of replacing a roof?
To estimate the cost of replacing a roof, start with the roof size (square footage) and the type of roofing system needed, then factor in the roof’s condition, complexity, and any insulation or code upgrades.
How long is a typical commercial roof warranty?
A typical commercial roof warranty depends on the roofing system and manufacturer, but most warranties range from 10 to 30 years or longer. Coverage can vary widely by warranty tier.
Higher-tier warranties may include full coverage for materials, labor, tear-off, and workmanship for a set period of time, while standard or limited warranties often cover materials only and may be prorated or shorter in duration. The exact warranty terms depend on the roofing system selected and how it is installed.
What is the most expensive part of replacing a roof?
The most expensive part of a commercial roof replacement is usually labor and tear-off, especially when removing multiple roof layers, hauling debris, and safely preparing the roof for a new system. Costs can also increase when projects require insulation upgrades, tapered drainage, complex flashing details, or repairs to damaged decking discovered during tear-off.
Other major cost drivers include:
- Roof access and safety requirements (lifts, cranes, staging)
- High detail areas (parapets, curbs, skylights, HVAC penetrations)
- Warranty level and manufacturer requirements (ex: GAF, Versico, Duro-Last, GE Enduris)
How long will a commercial roof last?
Most commercial roofs last 15–30+ years, depending on the roofing system, installation quality, weather exposure, and ongoing maintenance. At Washington Weather Shield, we design and install commercial roofing systems built for long-term performance in Western Washington conditions.
Roof lifespan depends on factors like:
- Roofing material (TPO, PVC, EPDM, metal, coatings)
- Drainage and ponding water prevention
- Foot traffic and rooftop equipment
- Quality of flashing and roof details
- Routine inspections and repairs
Which roof is better, EPDM or TPO?
It depends on your building and goals—TPO (Thermoplastic Polyolefin) and EPDM (Ethylene Propylene Diene Monomer) are both proven commercial roofing systems, but they perform differently.
TPO is often preferred for many commercial buildings because it’s heat-reflective, energy-efficient, and highly resistant to UV exposure, making it a strong choice for flat and low-slope roofs.
EPDM is a cost-effective rubber membrane that can be very reliable and is often easier to repair, but it typically doesn’t offer the same reflective “cool roof” benefits as TPO.
What affects the price of a commercial roof replacement?
The price of a commercial roof replacement depends on your building’s size, roof type, and how much work is needed to create a long-lasting, watertight system. At Washington Weather Shield, we build pricing based on the real conditions of your roof.
Common factors that affect cost include:
- Roof size (square footage) and number of levels
- Roof system selected (TPO, PVC, EPDM, metal, or coatings)
- Tear-off vs. re-cover (installing over an existing roof when allowed)
- Insulation needs (code upgrades, tapered insulation, energy efficiency)
- Roof complexity (drains, skylights, curbs, parapet walls, penetrations)
- Access and staging requirements (cranes, lifts, parking, loading zones)
- Safety and occupancy needs (tenant protection, work hours, noise limits)
- Warranty type and coverage level (manufacturer warranties vs workmanship)
Repairs to decking or structural components if damage is found
Do you offer written estimates and detailed scopes of work?
Yes. Washington Weather Shield provides written estimates and detailed scopes of work for commercial roofing repairs, maintenance, and roof replacement projects. Our proposals clearly outline the recommended system, project scope, and warranty options so you know exactly what to expect.
How do contracts and payment schedules work for commercial roofing projects?
At Washington Weather Shield, all commercial roofing contracts must be signed prior to the start of the project. Our standard payment schedule is 50% upfront to order materials and secure your installation dates on our calendar, with the remaining 50% due upon completion of the project. For larger commercial roofing projects, progress payments may be requested during the duration of the work, depending on the size and scope.
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 roofing 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 each year 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 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 Roofing Estimate
Get a clear, straightforward Seattle commercial roofing estimate with transparent pricing and a plan that fits your schedule.
Our commercial roofing contractor team makes the process simple so you can move forward with confidence and keep your property protected.