With our CoolStep line, Dec-Tec offers all the same waterproofing capabilities in the form of white, light pattern membranes with increased solar reflectance making it the perfect option for warmer, sunnier climates.

CoolStep is only available as an 80 mil product, automatically providing you with our 20-year limited membrane warranty and comes in two neutral toned patterns – a great option for both cool and warm color palettes.


got you covered

Our warranties are close to our hearts because we know that a product’s warranty is a nod to its integrity. We designed our warranties to keep our customer’s mind at ease, but also to show that we stand by our product.



A light, neutral pattern, high reflectance, and high traction equals a product perfect to waterproof a rooftop or patio deck located in a warmer climate. Our original CoolStep can bring a lighter, airier feel to your living space.

CoolStep Copper

coolstep copper

CoolStep Copper is designed to look great while keeping cooler than it’s darker Dec-Tec counterparts. The copper flecks add an aesthetic detail to the original CoolStep and allow it to compliment warm color palettes. This vinyl decking product is a beautiful solution to waterproof your rooftop patio.

coolstep slate

CoolStep Slate gives you the best of both worlds – combining a high solar reflective index with high definition tile prints – something the industry has never seen before! The large designer tiles of CoolStep Slate make it an excellent choice for warm sunny climates. Enjoy the outdoors all year long! 

CoolStep Slate
CoolStep Sandalwood

coolstep sandalwood

CoolStep Sandalwood is one of the newest members of our CoolStep Line. This is a brand new, never seen before product as it combines all the features of our 80 mil CoolStep with a high definition wood-grain pattern. Without a doubt, CoolStep Sandalwood is the coolest solution for locations that get a lot of sun! 



  • High Solar Reflective Index
  • Spread coat construction eliminates delamination
  • Non-directional Fiberglass Core
  • High Traction – Slip Resistance
  • Excellent vinyl to vinyl weldability
  • Widest membrane on the market at 76”
  • Complemented by a full line of color coordinated system accessories
  • Low maintenance


  • 80 mil thickness 


  • Cut to Size
  • Master Rolls at 76″ x 600′


  • 20 year limited warranty on 80 mil membrane 
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