Waterproof & Fire Resistant
Surface Protection


For over 25 years, Dec-Tec® has delivered proven waterproofing and roofing solutions for decks, balconies, walkways and many other types of exterior surface applications. As North America's leading innovator in pedestrian traffic bearing PVC membranes, along with industry leading system accessories and components, water intrusion problems on deck areas are a thing of the past. Dec-Tec has over 25 years of proven technology and proven performance.


Dec-Tec's membrane is adhered to the deck substrate by either a water-based or solvent-based adhesive. The membrane roll stock, once adhered to the substrate, is heat-welded together to create a completely waterproof seam, stronger than the membrane itself.


Dec-Tec Guardian is the only deck membrane in the industry to achieve a Class C fire rating when directly adhered to 5/8” T&G plywood. Our unique fiberglass reinforcement combined with our exclusive spread coat process provides our ability to meet and exceed the vigorous requirements of Class C. Watch our fire test video.

In the video, you will notice that the Dec-Tec brand membrane self-extinguishes once the source of the flame is removed. This is due to the natural ability of the polymers. Lesser quality deck membranes incorporate inexpensive fillers as a means to control cost in those that continue to burn.

When determining a membrane for your home or project, remember it’s the polymer, not the filler that keeps out water and provides the long term performance you demand.


Whether you are planning an outdoor living room to gather with friends and family, or an apartment building that requires unparalleled waterproofing and low maintenance costs, we have the solution. The cool feel of Dec-Tec CoolStep makes it perfect for foot traffic, shoes optional


Dec-Tec’s quality is only matched by its long-term warranty. Register and experience peace of mind with our 10 and 20 year limited membrane warranty.


We all owe future generations our best efforts to minimize environmental impact. We must choose sustainable products and manufacturers, but we must also take a logical, educated approach to determine which products qualify.


  • "Real Technology" on Natural Line
  • CRRC Listed
  • 20 Year Limited Warranty 80 mil total thickness
  • Cool underfoot even at high temperatures
  • Ideal for Balconies & Rooftop decks
  • Spreadcoat construction cannot delaminate
  • Thermal Emittance: 0.87
  • Solar Reflectance: 0.71
  • Meets ASTM 4434-06 / CGSB 37.54 (current)
  • UV Stabilized
  • Anti Microbial
  • Excellent vinyl to vinyl “weldability”
  • Internal Polyester reinforcement
  • System components include pre-formed flashing


Decks, Roofs, Garage Floors, Pool Surround, Recreational, Balconies, Commercial,
Multi‐family, Roof Top Decks, Commercial Walkways, RV Roofs, Boat Floors.


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