Waterproof decking — a walkable surface and roof in one.

Perfect for roof decks, balconies, and patios over living space.

We install durable, code-appropriate Duradek™ PVC deck membranes that create a finished walking surface while keeping the space below dry.

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Why choose a walkable membrane

We install Duradek™ walkable waterproofing systems for roof decks, balconies, and patios over living space.

  • Two-in-one — roofing-approved waterproofing and finished walking surface.
  • Over living space — detail-driven waterproofing with drains/scuppers and perimeter metal.
  • Low maintenance — no re-staining; periodic cleaning keeps it looking sharp.

Smart deck details

  • Pre-sloped substrate or tapered build-ups for positive drainage
  • Integrated door/threshold flashings and wall terminations
  • Guard/railing strategies that avoid unnecessary penetrations

FAQ

Can this be used over interior space?

Yes—these membranes are designed for roof-deck applications over living space when detailed for drainage and flashings.

Tile over a membrane?

When tile or stone is desired, it’s built over a primary waterproofing layer with the appropriate assembly. We’ll review options case-by-case.

Plan a waterproof deck

Our Services

Expert solutions you can trust.

What Our Clients Say

  • We had a great experience working with Roofworks Northwest on a project inside our commercial building. Sam and Sean were both friendly, professional, and extremely knowledgeable. They explained the process clearly, answered all our questions, and made sure everything was done to a high standard. The quality of their work really stood out, and they completed everything on time and with great attention to detail. Highly recommend Roofworks Northwest for anyone looking for reliable, top-notch service!

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    ~Nicole Kearney
  • After obtaining multiple bids for a total roof replacement we selected RoofWorks for the project. Sam identified several issues during his inspection that none of the others caught, and in talking with him it was clear that he takes pride in workmanship and doing things right. The office was great to work with; excellent communication throughout the process. The work crew was super respectful of our home and property, and they were very diligent and efficient. There were several follow-up visits to make sure everything was perfect. Cleanup after the fact was impeccable. We couldn’t be happier with the work.

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    ~Don Elliott
  • These guys installed a flat walkable roof on our house almost 5 years ago. It was an unusual project that required rebuilding the underlayment, removing steel and glass railings, and re-installing them. They set realistic and reasonable expectations before the work started, did fantastic work during the project, and have remained super-responsive every time I've contacted them with questions or requests ever since. They are clearly in it for the long run. I would use them again.

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    ~Peter Moon
  • Provided a comprehensive bid, work was quality and on time at a very competitive cost. Communication was great start to finish.

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    ~Lance Morehouse
  • Roofworks Northwest did a great job with roof repairs and treatment. The person was friendly and professional. They went on my list of trusted vendors.

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    ~Cathy
  • I recently hired Roof Works to inspect, clean, and treat my roof. They arrived at the scheduled time and completed the job in a timely manner, including cleaning out the gutters. They communicated with me every step of the way and the cost was very reasonable. If i ever need any work done in the future i would not hesitate in hiring Roof Works again. Thank you Team!

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    ~Pam Woods
  • We have a cabin in the San Juans only accessible by boat. He and his crew hauled everything up, tore off the old roof hauled that back and put on a new beautiful roof. This took a lot of thought and planning and could not have worked out better!! I can't imagine doing a job like this with anyone else! They did it in four days!! Amazing!

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    ~Kevin Mccarthy
  • Brendan and team are great!!! I have hired them a few times and they always do fantastic work! They work with you and listen to your needs. You can count on them.

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    ~Nick Ricard
  • Highly recommend RoofWorks Northwest. They were wonderful to work with from beginning to end! We have used them several times for some roof repairs and attic venting. They were responsive, showed up when they said they would be there and did great a job. We will definitely be using them for any future roof needs.

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    ~Ryann McCarthy
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