Tacoma, WA
Demgy Pacific
TPO Roof Overlay
TPO overlay for a precision manufacturer of high-performance plastics and composite components.
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Commercial Roof Construction in Greater Seattle
Commercial Roof Construction for Active Job Sites
New roof construction performed by certified crews. Our Seattle commercial roof construction delivers clean execution, clear communication, and specification-driven roofing systems.
5.0 Google · 40 reviews
30-Year Warranty
Tenant-First Install
SUMMER SPECIAL
Up to $5,000 Towards a Roof Replacement
*Terms apply. Offer expires 12/31/26
Request a Free Estimate
Same-day callback Mon–Fri. We’ll inspect, scope, and quote in writing.
Commercial Roof Construction in Greater Seattle
Commercial Roof Construction for Active Job Sites
New roof construction performed by certified crews. Our Seattle commercial roof construction delivers clean execution, clear communication, and specification-driven roofing systems.
Why Choose Our Roof Construction Company
This is why clients trust us
Choosing us for your commercial roof construction in Seattle means working with a team that delivers consistent workmanship, clear communication, and dependable scheduling. You get a roofing construction company that supports your goals, protects your timeline, and builds long-term value into your project. Here’s what sets our work apart.
Leak-Free Performance Pledge
If our work leaks, we're there in 24 hours. No cost to you.
On-Time, On-Budget Scorecard
Transparent milestones, change orders, and progress photos. We start when promised and finish as bid.
GC and Trade Coordination
Proactive scheduling, clear trade coordination, and consistent jobsite communication to keep projects moving without delays or conflicts.
Certified Crews, Modern Systems
Top-of-the-line roofing systems installed by certified crews.
Clean Site Guarantee
We keep walkways clear, protect common areas, and complete daily cleanup to leave your property tidy before we leave.
Warranty & Protection
Your new roof comes with straightforward manufacturer warranty coverage and thorough documentation at project closeout. See our Warranty & Protection page for more details.
Greater Seattle Commercial Roof Construction Services
Everything your new roof needs, from start to finish
Our commercial roof construction in Seattle covers every phase of a new build—from design coordination and substrate preparation to system installation and clean, inspection-ready finishes. We provide steady communication and experienced crews who keep projects moving without creating extra work for your team.
What’s included in every new construction roof build.
Safety, Compliance, and Inspection Readiness
OSHA-compliant jobsite practices, code-ready installs, and thorough documentation so your new construction roofing passes inspection the first time.
Coordination with Mechanical, Electrical, and Plumbing (MEP) Trades
Proactive scheduling and curb placement coordination with MEP contractors to keep your construction roofing timeline on track without conflicts or delays.
Flashing, Edge Metal, and Penetration Detailing
Precision installation of flashing, edge metal, and penetration seals at walls, parapets, curbs, and roof penetrations to protect vulnerable areas and prevent leaks.
Roof Insulation and Vapor Barrier Installation
Code-compliant insulation and vapor barrier systems that improve energy efficiency, control moisture, and reduce condensation.
Structural Deck and Substrate Preparation
Proper preparation of the roof deck and substrates to create a stable foundation and prevent future roofing issues.
Commercial Roofing Materials and System Selection
TPO, PVC, EPDM, and metal roofing systems selected for proven performance in Pacific Northwest rain, wind, and temperature swings.
Flat and Low-Slope Roof Construction for Commercial Buildings
Flat and low-slope roof systems designed for proper drainage, energy efficiency, and durability across office, retail, industrial, and multi-family buildings.
Meet Your Greater Seattle Commercial Roof Construction Team
13+ years of proven commercial roofing experience
Meet the team behind your Seattle commercial roof construction project.
Ivan Prokopets
Owner & CEO
Rita Prokopets
Chief Operating Officer
Washington Weather Shield Team
More Services Beyond Roof Construction
Support Beyond the Build
A reliable roof construction company supports more than the initial install. We remain available for warranty work, repairs, maintenance, and future upgrades long after construction is complete.
Here are the other services we provide.
Commercial Roof Replacement
Full replacements for aging and failing commercial roofs.
- Tear-off and re-roof options
- Code-compliant systems
- Long-term performance materials
Commercial Roof Repair
Targeted commercial roofing fixes that stop leaks and prevent further damage.
- Leak patching
- Flashing and membrane repairs
- Storm and impact damage
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
How to Get a New Construction Roof in Three Steps
Clear steps from estimate to completion
Our commercial roof construction process keeps every phase clear and predictable. You get regular updates, milestone tracking, and a team that coordinates with your GC schedule from estimate to final inspection. Here's how we move from planning to completion.
STEP 1: Schedule a pre-construction review
We meet on-site or review your plans to assess the scope, recommend systems, and confirm the timeline and budget requirements for your commercial roof construction in Seattle.
STEP 2: Approve your construction-ready plan
You receive a detailed estimate with a clearly defined scope of work, so expectations are set before the project begins.
STEP 3: Installation, cleanup, and documentation
Our crew completes the new construction roof with progress updates, jobsite cleanup, and a full documentation package at closeout.
Materials and systems we work with
Commercial Roof Materials and Systems
These are the systems we install, restore, and stand behind across the Greater Seattle area. Choose from single-ply membranes to walkable PVC decks, and other quality materials.
TPO
Commercial TPO roofing
A lightweight and energy-efficient single-ply membrane ideal for flat or low-slope commercial roofs.
Explore TPO roofing
PVC
Commercial PVC roofing
Durable, fire-resistant, and chemical-resistant single-ply membrane designed for long-term performance on flat and low-slope roofs.
Explore PVC roofing
Coating
Commercial roof coating
Liquid-applied systems designed to restore, protect, and extend the lifespan of existing commercial roofs.
Explore roof coating
Metal
Commercial metal roofing
Long-lasting, fire-resistant, and low-maintenance panels known for their exceptional durability.
Explore metal roofing
EPDM
EPDM roofing
Flexible, synthetic rubber single-ply membrane with strong weather resistance and excellent long-term performance for commercial roofing.
Explore EPDM roofing
Composition
Commercial composition roof
Traditional, cost-effective asphalt shingle system reinforced with fiberglass mats, typically used on steep-slope commercial or multifamily buildings.
Explore composition roofing
Dec-Tec
Commercial Dec-Tec / Walkable PVC Deck Membranes
Walkable, waterproof PVC membrane commonly used for commercial decks, balconies, and roof patios over occupied spaces.
Explore Dec-Tec decks
A closer look at our work across Greater Seattle
Recent Commercial & Industrial Roofing Projects
We’ve completed commercial and industrial roofing projects across the Puget Sound from warehouses and manufacturing facilities to retail and distribution centers. Here’s a look at some recent work we’ve completed.
Why Quality Commercial Roof Construction Matters
Built to spec. Built to last.
Commercial roof construction in Seattle directly impacts project schedules and long-term building performance. A dependable roofing construction company helps prevent delays, coordinates seamlessly with other trades, and delivers a roof system built to perform from day one. Reliable construction roofing companies integrates with your timeline, supports the overall build, and delivers lasting results without adding workload to your team.
What proper construction roofing delivers:
- Coordination with other trades and GC timelines
- Substrate prep and structural readiness before membrane install
- Drainage systems designed to prevent ponding and leaks
- Inspection-ready installs that pass required checks
- Clean handoff with warranties and complete documentation
Reviews
Real Feedback on Our Seattle Commercial Roofing Work
When people search for the best commercial roofing company, they want steady communication and reliable results. See what Seattle businesses say about working with our commercial roofers.
5.0 ★★★★★
Google · 40 reviews
01/ 15
Serving the Greater Seattle Area and beyond
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
Service area
Greater Seattle
47 cities · 9 counties
Serving the Greater Seattle Area and beyond
Our Service Areas
Providing commercial roofing services in Seattle and surrounding communities.
- 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
FAQs on Commercial Roof Construction
General FAQs
What is the best roofing for commercial buildings?
There is no single best roofing system for all commercial buildings. The right choice depends on factors such as roof slope, building use, climate, budget, and long-term performance goals. Common commercial roofing systems include single-ply membranes like TPO, PVC, and EPDM, as well as metal roofing and roof assemblies with insulation and protective layers designed for durability and efficiency.
What is the most durable roofing type?
There is no single “most durable” commercial roofing system for every building. Durability depends on roof design, installation quality, materials used, and ongoing maintenance. Metal roofing and single-ply membrane systems such as TPO, PVC, and EPDM can all deliver long service lives when properly designed and installed. For flat and low-slope commercial roofs, single-ply systems are often the most practical and durable option due to their flexibility, drainage performance, and ease of repair.
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
With proper installation and maintenance, manufacturer-backed systems from GAF, Versico, Duro-Last, and GE Enduris can provide long-lasting protection and strong warranty options.
How thick is a commercial roof?
The thickness of a commercial roof depends on the full roof assembly, including the structural deck, insulation, cover boards, and roofing membrane. Most commercial roof systems range from several inches to over a foot in total thickness, depending on structural design, required insulation levels, drainage needs, and building code requirements.
How many layers of roofing are allowed on a roof in Washington State?
Washington State building codes generally limit roofs to a maximum of two layers of roofing materials. If a roof already has two layers in place, the existing roofing typically must be removed before installing a new system. Local jurisdiction requirements and existing roof conditions may also affect whether a tear-off is required.
How is a commercial roof constructed?
Commercial roof construction typically begins with installation of the structural roof deck, followed by insulation and vapor control layers when required. The roofing system—such as TPO, PVC, EPDM, metal, or another specified assembly—is then installed with proper drainage, flashing, and edge details. Each roof assembly is designed to manage water, control heat and moisture, and protect the building from environmental exposure, with construction methods varying based on roof type, building design, and code requirements.
Can a general contractor do roofing in Washington state?
In Washington state, roofing work must be performed by contractors who are properly licensed and insured for roofing services. Some general contractors may hold the appropriate licensing to perform roofing work, but many projects—especially commercial roofing—are completed by specialty roofing contractors due to the technical requirements, manufacturer installation standards, and warranty considerations involved.
How is a metal roof installed on new construction?
Installing a metal roof on new construction begins with preparation of the structural roof deck, followed by installation of underlayment, insulation, or vapor control layers as required by the roof design. Metal panels are then installed and secured in accordance with engineered specifications, with careful detailing at seams, penetrations, and roof edges to ensure long-term performance, weather resistance, and code compliance.
Pricing & Contracts
What affects the price of commercial roof construction?
The cost of commercial roof construction depends on several factors. Pricing is influenced by the condition of the roof, the roofing system involved, and the performance requirements of the project.
Common factors that affect cost include:
- Roof size (square footage) and building height
- Type of service needed (repair, maintenance, cleaning, insulation, replacement, or construction)
- Roofing system selected (TPO, PVC, EPDM, metal, coatings, or other assemblies)
- Roof condition and any underlying damage
- Roof complexity (drains, skylights, curbs, parapet walls, penetrations)
- Access and staging requirements
- Safety requirements and occupancy conditions
- Insulation needs and energy code considerations
- Warranty type and coverage level, where applicable
For the most accurate pricing, Washington Weather Shield recommends scheduling a roof inspection to evaluate your specific roof and project needs
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 construction, 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 are contracts and payment schedules handled for new construction 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.
Expertise & Credentials
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?
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.
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.
Do you handle commercial new construction roofing as part of larger builds?
Yes. We regularly perform commercial new construction roofing as part of larger construction projects, working closely with general contractors, architects, and other trades. Our work is coordinated with project schedules, plans, and sequencing requirements to ensure proper integration with the overall build and compliance with applicable codes and specifications.
Take the first step toward a better roof
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.
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