COMMERCIAL ROOFING
Commercial Roofing Contractor for the Greater Eastside
Single-ply membrane, modified bitumen and metal systems for Eastside offices, retail, restaurants and multifamily buildings.
Top Line installs, repairs and maintains commercial roof systems across the Greater Eastside and the Puget Sound region — PVC, TPO, EPDM, modified bitumen and metal. We work around your operating hours, keep the site controlled and safe, and put the full scope in writing before anything is torn off.
Systems we install and service
- PVC single-ply — the strongest choice where grease, chemical exposure or ponding is a factor. Restaurants and commercial kitchens especially.
- TPO single-ply — reflective, cost-effective, and the most common specification on newer Eastside commercial buildings.
- EPDM rubber — proven, flexible, and forgiving on roofs with many penetrations.
- Modified bitumen — torch-down and self-adhered systems for smaller low-slope roofs and transitions.
Why flat roofs fail on the Eastside
A commercial roof in this region is managing volume, not intensity. It rains for months, it does not dry out, and every low spot holds standing water. Ponding degrades membrane, grows moss and algae along seams, and finds any lap that was not welded properly. Add fir and cedar debris blocking drains and scuppers, and a roof that was fine in September is holding two inches of water in November.
HOW WE WORK ON OCCUPIED BUILDINGS
Minimal disruption to your operation
Scheduled around you
We schedule the work around your operation and phase it so entrances, parking and deliveries stay usable.
Site controlled and safe
Perimeter protection, controlled debris handling and clear access routes. Your tenants and customers are not walking under an uncontrolled job.
Written scope and pricing
Line-item scope your property manager or ownership group can actually review, plus documentation for the building file.
Clean at the end of every day
The site is left tidy each evening, not just at project close. Debris does not accumulate in your parking lot for a week.
OUR PROCESS
How a commercial project runs
01
Roof survey
We walk the entire roof, document seams, penetrations, drains and equipment curbs, and check for moisture in the assembly.
02
Written scope and options
You get repair, restoration and replacement priced separately where all three are viable, so ownership can make a real decision.
03
Phased installation
Work sequenced to keep the building operating. Tear-off and dry-in the same day on each section — we never leave an open deck overnight.
04
Closeout documentation
Final walkthrough, photographs of completed detail work, and the paperwork your building file needs.
COMMERCIAL WORK
Commercial roofs across the Eastside
COMMERCIAL ROOFING FAQ
What property managers ask
Yes. We phase commercial work so that entrances, parking and delivery access stay usable, and we sequence tear-off and dry-in so no section of deck is ever left open overnight.
PVC is the stronger choice where there is grease exhaust, chemical exposure or persistent ponding, which is why it is the default over commercial kitchens. TPO costs less and performs well on clean, well-drained roofs.
It depends entirely on whether the insulation under the membrane is dry. If it is, a coating can extend the roof several years at a fraction of replacement cost.
Yes. Scheduled inspections with drain clearing, debris removal, seam checks and a photographed condition report.
PREMIUM MATERIALS ONLY
Premium material only — on every commercial roof
The part you stop seeing the day the job is finished is the part that decides how long it lasts.
Premium products, not builder grade
Membrane specified at the right thickness for the building rather than the thinnest sheet that meets code, manufacturer-approved fasteners, plates and adhesives, and prefabricated corners and curb wraps instead of field-improvised detail. The cheap version of a commercial roof shows up as a call-back in year four.
Installed the way the manufacturer specifies
Material warranties are conditional on installation. Get the fastener pattern, the flashing detail or the ventilation wrong and the coverage behind the product is gone. We install to the published specification, so the warranty you paid for stays intact.
The same standard on every service
Roofing, gutters, repairs, cleaning, new construction — same crew, same materials policy, same details, whether it is a full replacement or one flashing repair.
Related services
★★★★★ Rated 5.0 on Google · Licensed, bonded & insured · WA reg. TOPLILR822NG · Premium materials only
Get a free inspection and an honest quote
We get on your roof, photograph what we find, and tell you whether you are looking at a repair, a cleaning or a replacement. No charge and no pressure.
Premium materials only, on every job — installed to the manufacturer specification so the warranty stays intact.
Licensed and insured Washington roofing contractor serving the Greater Eastside and the Puget Sound region.
Follow us
Services
Contact
Greater Eastside, WA
Eastside · Snoqualmie Valley · Seattle metro
Open 24 hours, 7 days a week
24/7 emergency roof repair
WE ACCEPT
- Visa
- Mastercard
- Credit & debit cards
- Check
© 2026 Top Line Roof & Construction LLC · Washington State
WA Contractor Registration TOPLILR822NG · WA UBI 604-316-316 · Licensed, bonded & insured