Gig Harbor, WA
Haven of Rest
Metal Retrofit · TPO Upgrade
Roof retrofit upgrading aging standing-seam metal to a TPO system, no full tear-off needed.
View project →Commercial Steep Slope Roofing in Seattle
Pitched Roofing for Commercial and Multi-Family Buildings
Washington Weather Shield provides steep slope roofing services for commercial and multi-family properties across Greater Seattle. We install metal and composition roofing on pitched roofs, single-slope sections, mansards, canopies, and sloped areas integrated with low-slope roofing systems.
5.0 Google · 47 reviews
Up to 30-Year Warranty
Tenant-First Install
FALL 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.
Where Sloped Roofing Works on Commercial Properties
Common Building Types and Roof Configurations
A steep-slope roof can cover the entire building or appear as one part of a larger roof assembly. We commonly evaluate sloped commercial roofing on properties where pitched roof areas are part of the building design, drainage plan, or visible architecture.
01
Multi-Family & HOA Properties
Apartments, condos, townhomes, and HOA communities often use commercial composition roofing on pitched sections, with flat membrane areas elsewhere on the property.
02
Retail & Mixed-Use Buildings
A pitched roof commercial building may use visible sloped sections above storefronts, entries, mansards, or upper floors while lower roof areas remain flat or low-slope. On another pitched roof commercial building, the sloped system may cover the entire structure.
03
Offices & Professional Buildings
Steep-slope roofing can be used across the full roof or on prominent rooflines, entrance features, and additions where the roof contributes to the building’s exterior design.
04
Churches & Community Buildings
These properties often have larger pitched roof planes, valleys, intersecting rooflines, and other details that require careful flashing and water-shedding design.
05
Commercial Additions & Canopies
A single slope commercial roof can be a practical configuration over an addition, canopy, covered entry, or secondary building section.
06
Mixed Roof Assemblies
Many properties combine steep-slope commercial roofing with TPO, PVC, or another low-slope system. The connection between assemblies becomes part of the waterproofing plan, not a separate detail to address later.
Full-Service Roofing for Every Stage of Your Roof
One Commercial Roofing Team From Maintenance Through Replacement
Steep-slope roofing is one part of the larger roof lifecycle. Washington Weather Shield supports commercial properties with the same service umbrella used across our Greater Seattle roofing program.
Full replacement for roofs at the end of their service life.
- Tear-off and re-roof options
- Insulation and drainage improvements
- Manufacturer-warranted roofing systems
Targeted repairs to address leaks, damage, and vulnerable roof areas.
- Leak detection and repairs
- Flashing and membrane repairs
- Storm and impact damage
Roofing for new buildings, additions, and major renovations.
- Roofing system installation
- Material and system recommendations
- Insulation and drainage coordination
Commercial Roof Retrofit
A new engineered roof installed over the existing structure.
- Metal-to-TPO retrofit
- Additional insulation options
- Reduced tear-off and disposal
Scheduled care that catches issues early and extends roof life.
- Seasonal inspections
- Minor repairs and sealant work
- Written condition reports for capital planning
Fast response for active leaks and storm damage.
- Same-day callback, Monday to Friday
- Temporary dry-in
- On-site assessment and repair plan
Routine roof cleaning to help maintain proper drainage and protect roofing systems.
- Debris removal and surface clearing
- Drain, gutter, and scupper clearing
- Roof condition observations
What Makes Steep Slope Commercial Roofing Different
Water Moves Quickly, but Proper Detailing Is Essential
On a steep slope roofing project, water flows toward valleys, eaves, gutters, and lower roof sections, making proper drainage and flashing critical. We evaluate these areas, along with walls, penetrations, ridges, and transitions between roofing materials, to ensure the system is designed to manage water effectively.
Access and staging also require additional planning.
A commercial metal roof steep-slope section may be located above entrances, sidewalks, parking areas, or occupied tenant spaces. We coordinate with property managers to plan material handling, site access, cleanup, and installation activities while minimizing disruptions to daily operations.
Projects involving both steep-slope and low-slope roofing systems require special attention where the two systems connect. When a steep-slope roof transitions into a low-slope membrane roof, proper integration is essential to managing water flow and preventing leaks. We evaluate these transitions to ensure both roofing systems function together as a complete assembly.
Rita Prokopets, Chief Operating Officer, Washington Weather Shield
Benefits of a Sloped Roof for Commercial Buildings
Why Pitched Roofing Can Make Sense for the Right Property
Sloped commercial roofing isn’t the ideal solution for every building, but it can offer practical and architectural advantages depending on the property’s design, functionality, and intended use.
Effective water drainage
A steep-slope roof uses gravity to direct rainwater toward eaves, gutters, and downspouts, reducing reliance on internal drains and scuppers.
Architectural flexibility
Pitched roof areas can enhance a building’s appearance and complement its overall design, particularly for offices, retail properties, churches, multifamily buildings, and mixed-use developments.
Multiple material options
Commercial composition roofing and metal roofing are both options, depending on the building’s design, existing roof structure, maintenance requirements, and budget.
Versatility in mixed-roof designs
Steep-slope commercial roofing can be incorporated into visible perimeter sections or upper roof areas, while low-slope membrane systems protect larger roof sections.
Adaptable configurations
A single slope commercial roof, fully pitched roof, canopy, or mansard can be designed to complement the building’s architecture and functional requirements.
Commercial Sloped Roofing Systems and Materials
Metal and Composition Options for Pitched Roof Areas
Washington Weather Shield installs two primary material types for steep-slope roofing: commercial metal roofing and commercial composition roofing. The most appropriate system depends on the roof’s pitch, existing structure, surrounding conditions, exposure, and long-term maintenance needs.
Standing-Seam Commercial Metal Roofing
Standing-seam metal roofing features raised seams and concealed fasteners, providing a clean, modern appearance. This commercial metal roof steep-slope option is commonly used on buildings where the roof is a prominent architectural feature. Each commercial metal roof steep-slope installation requires careful planning around panel layout, edges, penetrations, and transitions to ensure proper drainage and weather protection.
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Exposed-Fastener Metal Roofing
Exposed-fastener metal roofing uses panels secured with visible mechanical fasteners. These systems can be a practical option for commercial and industrial pitched roofs, depending on the roof's slope, design, and intended application. Proper installation, fastening, and ongoing maintenance are important to long-term performance.
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Commercial Composition Roofing
Commercial composition roofing typically consists of architectural asphalt shingles reinforced with fiberglass mats. These systems are commonly used on suitable pitched roof sections of offices, multifamily properties, mixed-use buildings, and other commercial structures where composition shingles complement the overall building design.
Each roofing material has specific requirements for underlayment, fastening, flashing, penetrations, edges, and transitions. We evaluate these factors alongside the building’s existing conditions before recommending the most appropriate system for a pitched roof commercial building.
How Our Steep Slope Roofing Process Works
Three Steps From Evaluation to Closeout
Our process begins with a thorough roof evaluation and a clearly defined scope of work. From initial assessment through installation and project closeout, we coordinate each phase with your property team to help minimize disruptions to building operations.
Step 1: Schedule Your Free Roof Evaluation
We review the steep-slope roof configuration, existing material, flashing, valleys, penetrations, gutters, visible deck conditions, and connections to adjacent roof areas. On a commercial metal roof steep-slope project, we also evaluate panel seams, fastening methods, and edge conditions that may affect the scope of work. Photos help document existing conditions and identify areas that may require further investigation.
Step 2: Approve Your Scope and Project Plan
You receive a written proposal with the recommended repair, replacement, or new installation scope, proposed material, and applicable warranty options. If your property combines steep-slope commercial roofing with a membrane roof, the connection between systems is included in the plan.
Step 3: Installation, QA, and Project Closeout
Our crew coordinates access and staging, protects work areas, manages daily cleanup, and keeps you updated through the project. Completed conditions are documented for closeout, warranty support, and future roof planning.
Why Property Owners Choose Washington Weather Shield
Commercial Roofing Planned Around the Building Below It
A sloped commercial roofing project can impact entrances, sidewalks, parking, tenant spaces, and daily operations. Our process is built around keeping the scope clear and the work controlled from the first inspection through closeout.
Tenant-First Install Program
We coordinate work hours, access, tenant communication, and daily cleanup for occupied properties.
On-Time, On-Budget Scorecard
Project milestones, change orders, progress, and documentation stay visible throughout the work.
Certified Crews, Modern Systems
Washington Weather Shield holds GAF GoldElite Commercial Contractor status and current commercial manufacturer certifications, with ongoing system-specific training.
Cleaner Site Guarantee
Walkways and common areas are protected, and daily cleanup is part of the project routine.
Portfolio Care for PMs & Owners
Portfolio-level support helps property managers and owners prioritize needs across multiple roofs and buildings.
Certifications & Partnerships
Trusted Partners. Certified Products. Better Projects.
Every one of our professional commercial roofing services uses manufacturer-approved membranes, coatings, and flashing details. That applies to all the types of commercial roofing we install: single-ply membranes, coatings, and metal.
Certified Product Partners
Commercial Roof Projects Across Greater Seattle
Real Results From Businesses Like Yours
A look at recent commercial roofs we’ve installed, replaced, and protected across Western Washington.
Puyallup, WA
Legend Auto Sales
Tear-Off · Asbestos Abatement
Full roof tear-off with asbestos abatement and complete replacement for an auto dealership.
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Tacoma, WA
Demgy Pacific
TPO Roof Overlay
TPO overlay for a precision manufacturer of high-performance plastics and composite components.
View project →Meet Our Team
The Certified Professionals Behind Every Roof
Washington Weather Shield is a family-owned commercial roofing company based in Tukwila. Ivan and Rita Prokopets run the business and stay involved in projects, from the first site visit to the closeout walk.
Ivan Prokopets
Owner & CEO
Rita Prokopets
Chief Operating Officer
What Building Owners and Managers Say About Our Work
Customers Love What We Do
A property manager reviewing a commercial roofing company wants to know two things: if the crew showed up when promised and if the roof remained dry. Read what owners and managers across the Greater Seattle Area say about both.
5.0
Google · 47 reviews
01/ 15
Our Service Areas
Serving the Greater Seattle Area and Beyond
We are based in Tukwila and provide local commercial roofing services in 47 cities across King, Pierce, Snohomish, Thurston, Kitsap, Mason, Whatcom, Skagit, and Lewis counties. See our Seattle and Tukwila pages for city-specific detail, or tap a city 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
FAQs About Steep Slope Roofing
General FAQs
What is steep-slope roofing?
Steep-slope roofing refers to pitched roof systems designed to shed rainwater toward eaves, gutters, and lower roof areas. These systems commonly use materials such as metal panels or asphalt shingles, rather than the continuous membrane systems typically installed on flat and low-slope commercial roofs.
What is the difference between flat and sloped commercial roofing?
Flat and low-slope commercial roofs typically use continuous membrane systems that direct water toward drains or scuppers. Sloped commercial roofing uses pitched geometry and water-shedding materials to move water toward eaves and gutters. A pitched roof commercial building can also use both approaches, with membrane roofing on one section and a steep-slope roof on another.
What materials are used for commercial sloped roofs?
Washington Weather Shield’s primary steep slope roofing options include commercial metal roofing and commercial composition roofing. Metal options include standing-seam and exposed-fastener panel systems. Commercial composition roofing uses architectural asphalt shingles on suitable pitched sections. The material recommendation depends on slope, roof geometry, deck condition, exposure, and adjoining systems.
Is metal roofing good for steep-slope commercial buildings?
Metal is one of the best options for steep-slope commercial roofing when the building geometry and project goals suit the selected panel system. A commercial metal roof steep-slope assembly still depends on correct attachment, flashing, penetrations, edges, and transition details, so the panel type is only one part of the specification.
How long does a commercial sloped roof last?
There is no single service-life number for every steep-slope roof. Metal and commercial composition roofing systems have different planning horizons, and actual performance depends on the product, installation, exposure, roof complexity, maintenance, and repair history. We use the selected manufacturer’s system information and the building’s actual conditions when discussing expected service life.
Do commercial buildings use sloped roofs?
Yes. Commercial buildings can feature fully pitched roofs, a single slope commercial roof, or sloped architectural sections combined with flat roofing. Offices, retail buildings, multifamily properties, churches, and mixed-use developments commonly incorporate sloped roofing depending on the building’s design.
Can a commercial building have both flat and sloped roofing?
Yes. Many commercial and multifamily properties incorporate both systems. For example, a building may use TPO or PVC membrane roofing over a large low-slope section and commercial composition roofing or metal panels on visible pitched sections. Properly designed transitions between the systems are essential for effective drainage and weather protection.
Pricing & Contracts
What affects the price of a commercial sloped roofing project?
Price depends on roof area, material, tear-off requirements, roof pitch, deck condition, valleys and intersecting roof planes, flashing complexity, access and staging, gutters, penetrations, and transitions to adjacent systems. A simple single slope commercial roof generally scopes differently from a complex pitched roof commercial building with multiple roof planes.
Do you provide written estimates and detailed scopes of work?
Yes. Washington Weather Shield provides written proposals that identify the recommended system or repair approach, scope of work, project timeline, and available warranty options. For sloped commercial roofing connected to a membrane roof, the scope also addresses how the two systems will meet.
How do contracts and payment schedules work?
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 a licensed commercial roofing contractor, and our crews receive ongoing training in installation methods, safety, and manufacturer requirements. For sloped roofing projects, we follow the specifications and installation standards required for the metal or composition system being installed.
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 (Coatings), 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 steep-slope, 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.
Resources Hub
Guides for Property Managers and Building Owners
Our articles cover the questions we hear most from property managers and owners: how to choose a contractor, what an inspection covers, and what to expect during an install. Browse the latest, or visit the full FAQ page and project gallery.
Request a Commercial Steep Slope Roofing Estimate
Start With the Roof Condition and the System You Have Now
Tell us whether your property has metal, commercial composition roofing, a single slope commercial roof, or a mixed flat-and-pitched assembly. We will inspect the roof, document the conditions, and provide a written scope for the next step. Washington Weather Shield provides steep slope roofing across Greater Seattle for commercial and multi-family properties.
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