Chinook Roofing Blog

Chinook Roofing Offers Perfect Solution for Aging Metal Roofs


Posted on: October 14, 2014

Duro Shield

A commercial building featuring the Duro-Shield Metal Retrofit Roofing System

Do you have a commercial metal roof that’s starting to leak or show other signs of age? Chinook Roofing offers an excellent solution that not only resolves your current metal roofing problems, but also prevents future metal roof maintenance issues — all without requiring a complete metal roof replacement.

That solution is the Duro-Shield Metal Retrofit Roofing System by Duro-Last, the world’s largest manufacturer of prefabricated roofing systems. Chinook is pleased to be an authorized Duro-Last contractor fully capable of managing the installation process from start to finish.

Benefits of Duro-Shield Metal Retrofit

The state-of-the-art Duro-Shield Metal Retrofit Roofing System is installed right over the top of your existing metal deck, saving you the expense of tear-off and replacement. The system works by protecting your metal roof from its four main vulnerabilities:

  • Rain
  • Ice build-up
  • Rust and corrosion
  • Loose seams and cracks that commonly result from shifting temperatures

Not only does this cost-effective system virtually eliminate the risk of rooftop leaks, but its highly-reflective white membrane is also energy efficient, helping businesses cut down on high energy costs.

How Is the System Installed?

Duro Shield

The various layers of the Duro-Shield System

When installing this innovative system, Chinook Roofing’s skilled roofers first apply two layers of insulation to your existing metal roof. The bottom insulation layer is cut to fit within the flutes of your metal roof, and the second insulation layer is applied on top to ensure complete protection from extreme weather as well as a flat surface for the rest of the system.

Next, we roll out the system’s prefabricated membrane over the insulation and mechanically attach it. Last but not least, Chinook Roofing heat-welds prefabricated flashings for stacks and other penetrations on-site to create a monolithic covering and ensure the seal is completely leak-proof. The end result is a system completely customized to your unique roofing specifications that’s designed to stretch and shrink with the weather, fully protecting your metal roof.

About Chinook Roofing & Gutters

Chinook Roofing & Gutters is a full service Tacoma roofing company with expert cross-trained installers for both commercial-industrial and residential roofing projects. Chinook also has a team of trained professionals dedicated to our Maintenance and Repair division whose goal is to extend the life of your existing roof system. Our service area spreads throughout the Puget Sound region, including our home base of Fife, as well as Gig Harbor, Puyallup, Milton and more. Contact us today for a free estimate.

(Images via Duro-Last.com)


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The only thing better than our new roof is the company who installed it. Kind and capable people from the inspection and estimate to impeccable clean up. Thank you so much!