Commercial Roofing Services in Seattle
Reliable commercial roofing for Seattle-area businesses. TPO, PVC, metal, and flat roof systems installed and maintained by K Single Corp's experienced crew.
Commercial roof replacement in Seattle typically costs $5 to $12 per square foot for membrane systems and $8 to $15 per square foot for metal. K Single Corp has installed and maintained commercial roofing systems across the greater Seattle area since 2007, serving retail, office, warehouse, and multi-family properties.
Commercial roofs in the Pacific Northwest face challenges that residential roofs do not. Flat and low-slope designs must handle Seattle’s 37+ inches of annual rainfall without ponding, while also supporting heavy HVAC equipment, foot traffic from maintenance crews, and the thermal movement that comes with large roof surfaces. Drainage engineering is not optional here. It is the single most important factor in a commercial roof’s long-term performance.
Why Commercial Roofing
What Sets Us Apart
Minimal Business Disruption
We schedule around your operating hours. Weekend, after-hours, and phased installation options keep your business running.
Every Major Flat Roof System
TPO, PVC, EPDM, standing seam metal, modified bitumen, and roof coatings. We match the right system to your building.
Property Manager Ready
Detailed documentation, progress updates, photo reports, and warranty packages built for property records and compliance.
Maintenance Programs
Bi-annual inspections, drain clearing, membrane patching, and condition reports. Extend your roof life 5 to 10 years.
25+ Years Commercial Experience
Retail, office, warehouse, multi-family, restaurant, and industrial. We have done it all across the Puget Sound.
At a Glance
Typical Cost
$5 – $18 per sq ft installed
WA License
KSINGSC842B3
Credentials
Licensed, Bonded, Insured
Service Area
King, Snohomish, Pierce
Warranty
10-year workmanship
Systems & Options
Commercial Roofing Systems We Install
TPO Membrane
The most popular flat roof system for commercial buildings. Excellent waterproofing and energy-efficient white reflective surface.
PVC Membrane
Ideal for restaurants and industrial buildings where chemical and grease resistance matters. Superior weld seam strength.
EPDM Rubber
A proven single-ply membrane for large flat roofs. Cost-effective with strong weather resistance and easy repairs.
Standing Seam Metal
Extremely durable metal roofing for sloped commercial structures. Low maintenance and strong performance in high-wind areas.
Modified Bitumen
Multi-layer system for buildings needing extra durability and waterproofing. Well-suited for roofs with moderate foot traffic.
Roof Coatings
Silicone and acrylic coatings that extend the life of an existing commercial roof without full replacement.
How Much Does Commercial Roofing Cost?
$5 – $18 per sq ft installed
Our Commercial Roofing Process
Site Assessment
We inspect your building's roof, document conditions, and assess drainage, insulation, and structural requirements.
System Recommendation
Based on your building type, budget, and performance needs, we recommend the best roofing system. Options, not pressure.
Detailed Proposal
Written proposal with material specs, labor breakdown, timeline, warranty details, and total cost. No hidden fees.
Scheduled Installation
We coordinate with your schedule to minimize tenant and business disruption. Weekend and after-hours work available.
Inspection + Documentation
Final inspection, warranty documentation, and a maintenance guide for your property records.
Site Assessment
We inspect your building's roof, document conditions, and assess drainage, insulation, and structural requirements.
System Recommendation
Based on your building type, budget, and performance needs, we recommend the best roofing system. Options, not pressure.
Detailed Proposal
Written proposal with material specs, labor breakdown, timeline, warranty details, and total cost. No hidden fees.
Scheduled Installation
We coordinate with your schedule to minimize tenant and business disruption. Weekend and after-hours work available.
Inspection + Documentation
Final inspection, warranty documentation, and a maintenance guide for your property records.
I'm a business owner in Seattle, WA and we have a flat roof that needed multiple repairs. I really enjoyed working with...
K Single has completed two roof repairs for me; one on my house and one on a commercial building I own. Both jobs were d...
I've used them in the past on a small commercial building and they did a great job. Now they're doing my home and so far...
Very professional and services are done at a very high level. Our company owns several properties and have used them for...
My job was very challenging. Actively leaking torchdown flat roof in winter over the holidays during an atmospheric rive...
We purchased our home 14 years ago. Our roof started to leak. After investigating the cause, it was apparent there were...
Common Questions
Frequently Asked Questions
How much does a commercial roof replacement cost in Seattle?
What is the best commercial roofing system for Seattle's climate?
How long does a commercial roof installation take?
Does K Single Corp handle commercial roof maintenance?
Can you repair my commercial roof without a full replacement?
Is K Single Corp licensed for commercial roofing in Washington?
Do you work with property managers and building owners?
Other Services We Offer
From roofing to siding, gutters, decks, and more. K Single Corp handles it all.
Residential Roofing
Complete residential roofing services for Seattle-area homeowners. From full replacements to storm damage repairs, K Single Corp delivers proven results backed by 25+ years of experience.
Roof Installation
Professional new roof installation for Seattle homes and businesses. Every material type, expert crews, and a 10-year workmanship warranty from K Single Corp.
Roof Repair
Fast, reliable roof repair for Seattle homes and businesses. Fix leaks, storm damage, missing shingles, and flashing failures. Emergency service available.
Siding
Professional siding installation and replacement for Seattle homes. Vinyl, fiber cement, wood, and engineered options. Boost curb appeal and energy efficiency.
Our Commercial Roofing Projects
Real results from real homes across the Seattle area.
Ready to Get Started?
Request a free estimate and find out why 15,000+ homeowners trust K Single Corp.
Most estimates completed within 24 hours.