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★★★★★ 5 Stars · 181+ Reviews

Flat Roofing in Keller, WA

Same-Day Appointments Available  ·  24/7 Emergency Service

Expert Roofing in Keller, WA. GAF Master Elite, Owens Corning Preferred.

Call (877) 349-1553
📞 (877) 349-1553

Hail hit Keller? Free damage inspections — limited availability this week.

Same-Day Service Licensed & Insured Free Estimates
<60 Min
Response Time
23+
Years Experience
5
Star Rating
181+
Happy Reviews

Flat roofs don't drain like sloped roofs. Water sits instead of running off. That fundamental difference means flat roofing requires specialized materials, installation methods, and drainage solutions. Keller Roofing & Maintenance installs and repairs TPO, PVC, EPDM, and modified bitumen flat roofing systems throughout Keller.

Our Flat Roofing Process

1

Membrane Assessment

Our inspector checks every detail: ponding areas, seam separations, flashing failures, clogged drains, UV degradation, and blistering. Core samples test insulation moisture content. You get photos and an honest assessment.

2

Your Options

We present options, not ultimatums. If a repair extends your flat roof 5-10 years, that might be the smartest investment right now. If the insulation is waterlogged and the membrane is failing, replacement is the answer. We lay out the facts.

3

Membrane Installation

Insulation board cut and installed with staggered joints. Membrane installed over insulation per manufacturer specs. All penetrations (pipes, vents, HVAC curbs) receive custom-fabricated flashing. Drains and scuppers cleared and properly connected to the new membrane system.

4

Final Inspection

Final roof inspection with drainage verification. Warranty paperwork provided. We recommend a maintenance plan to keep your flat roof performing and your warranty valid for its full term.

What Keller Customers Say

★★★★★ 5/5 from 181+ reviews
★★★★★

"Responded fast and got the job done right the first time. Crew was polite, professional, and cleaned up everything. Would absolutely hire again."

T
Thomas P., Keller
★★★★★

"Best experience we've ever had with a home service company. On time, on budget, and the results exceeded what we expected. Truly top-notch."

S
Steven F., Keller
★★★★★

"From the first phone call to the final walkthrough, everything was seamless. The team was courteous and efficient. Already recommended them to two friends."

W
William T., Keller
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Why Choose Keller Roofing & Maintenance for Flat Roofing?

All Flat Roof Systems

TPO, EPDM, PVC, modified bitumen, built-up roofing, and coatings. We install the right system for your building, not whatever we have on the truck.

Core Sampling & Testing

Before recommending replacement or coating, we core sample the roof to check insulation moisture. Waterlogged insulation means tear-off. Dry insulation means options.

Specialized Flat Roof Crew

Flat roofing requires different skills and equipment than sloped roofing. Our flat roof crew does this work every week, hot-air welders, torch kits, and adhesive systems are their daily tools.

Drainage Solutions

We solve ponding water with tapered insulation systems. Minimum quarter-inch per foot slope to drains or edges. Ponding is the number one flat roof killer. We eliminate it.

Flat Roofing FAQ

It depends on the application. TPO is great for energy efficiency. PVC resists grease and chemicals. EPDM is proven and affordable. Modified bitumen handles foot traffic well. We recommend based on your building's specific needs and budget.

A roof coating is a liquid-applied membrane, usually silicone or acrylic. That extends the life of an existing flat roof by 10-15 years. It works when the existing membrane and insulation are in reasonable shape. We core sample and moisture test to determine if your roof qualifies.

Ponding happens when the roof lacks adequate slope to drains or edges. Causes include compressed insulation, clogged drains, building settlement, or the original installation didn't include tapered insulation. We fix it with tapered ISO boards that create positive drainage.

Have More Questions? Call (877) 349-1553

SAME-DAY APPOINTMENTS AVAILABLE

Stop Leaks Before They Spread. Call Keller Roofing & Maintenance.

24/7 emergency service. Most appointments available within 48 hours.

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📞 (877) 349-1553

★★★★★ 5/5 from 181+ Reviews  ·  Licensed  ·  Insured

About Our Keller Flat Roofing Services

TPO is our most-installed flat roof membrane. White reflective surface reduces cooling costs, hot-air welded seams create a watertight bond stronger than the membrane itself, and manufacturer warranties run 15-20 years. We install 60-mil and 80-mil TPO, fully adhered or mechanically attached over polyiso insulation.

Roof coatings can extend the life of an existing flat roof by 10-15 years for a fraction of replacement cost. Silicone coatings over TPO, EPDM, or metal work well when the existing membrane is still in decent condition. We core sample and moisture scan to make sure coating is the right call before recommending it.

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