Duradek & Composite Decks

Transform Your Deck into a Waterproof Masterpiece with Duradek.

Introducing Duradek, the revolutionary PVC waterproof membrane that offers unparalleled protection for decks built over living spaces. Duradek stands out from conventional roof membranes such as TPO or PVC by offering a unique combination of practicality and aesthetics. With its textured, anti-slip surface and a range of colors and designs, Duradek is not just about functionality—it’s about enhancing the beauty of your outdoor living space.

At Fast Roofing, we specialize in the repair and replacement of decks, ensuring that every project meets our high standards of quality and aesthetics. We excel in repairing and preparing existing wood-framed decks for a new life under Duradek or composite materials.

Our approach avoids the complexities of building new decks from scratch, focusing instead on maximizing the potential of your existing structures. Whether it’s a refresh with composite deck boards or a complete waterproofing solution with Duradek, we’re here to transform your outdoor space.

The Duradek Installation Process – A Commitment to Excellence:

  1. Deck Preparation: We start by removing existing plywood or 2×4 deck boards to inspect the framing for any signs of rot, repairing or replacing as necessary.
  2. Foundation Laying: We install 3/4″ Tongue and Groove ACX plywood, chosen for its smooth, knot-free surface that prevents oil bleed-through and discoloration.
  3. Surface Preparation: Our team meticulously prepares the plywood surface by filling and sanding seams and screw holes to ensure a flawless finish.
  4. Duradek Application: The membrane, available in 6-foot rolls, is expertly glued down to the plywood. Each row overlaps by 3/4″, with overlapped seams heat welded to create a seamless, waterproof barrier.
  5. Detailing: We remove siding courses as needed to extend the membrane up the wall by 6″ and over the outside perimeter edge by 2″, securing it with a color-matched termination bar and screws for a polished look.


Choose Duradek for a deck that is not only waterproof and slip-resistant but also aesthetically pleasing, offering a range of designs to complement your home’s exterior. With our meticulous installation process, your deck is transformed into a durable, beautiful outdoor living space that you and your family will enjoy for years to come.

Don’t settle for anything less than the best. Contact us today to discover how Duradek can elevate your deck to the next level.

Get a FREE Deck Estimate

Call Fast Roofing today at (206) 351-2701 to schedule a FREE Deck estimate.

Our Working Process



We offer a free consultation and estimate. Please call us to schedule: 206-351-2701 or email us at rick@fastroofingnw.com


You will meet with Rick Fast, who will perform a complete inspection of your site. Rick will answer all your questions and work with you on the best solution for your needs and budget.


When the crew arrives, they will walk the property to check for items that need to be protected from falling debris, and set up protective plywood or move items to a safe area.


Wrapping up your project includes a final walk-through of the work done, and the site is cleaned up and left in a broom-swept condition. Once you are satisfied the project is complete, we will ask for final payment.


In the weeks following your project completion, we will check in with you to make sure there are no new concerns. We would be happy to schedule future projects, including seasonal maintenance and repairs.