Decking Facts

Understanding some basic vinyl decking facts will help you determine if vinyl decking is the right choice for your project. Explore the pages in this menu for everything you need to know about installation, maintenance, applications, and product comparisons.

The prime functions of vinyl decking are to:

Vinyl Membrane Construction

Vinyl decking is constructed with Polyvinyl Chloride (PVC), which is today’s best way to prolong the life cycle of various building products. It performs an admirable job in delaying the inevitable; however, all products designed for exterior use and under constant exposure of the elements will eventually show some signs of degradation.

Manufacturers add UV screens and stabilizers to prolong the life of PVC materials. These additions are designed to assist the vinyl to resist cracking, embrittlement and discolouration. Some vinyl products are produced without any UV and Mildew Inhibitors in the bottom ply of the membrane. Duradek is manufactured for the highest quality with these important ingredients in both the top and bottom ply.

North American building codes dictate that 60 mil is the required thickness for pedestrian traffic roofing membranes (commercial flat roofs only require only 48 mil thickness). Today, there are many decks still benefiting from the waterproof protection of 24 mil vinyl. When in doubt of how thick a deck or flat roof vinyl needs to be, always refer to the current building code standards.

Appearance versus Waterproofing

After a significant length of time, the initial appearance of a vinyl deck surface will eventually deteriorate, but this does not affect its ability to provide waterproofing.
Duradek vinyl is one of the top performers for maintaining appearance from extended UV exposure when tested against other vinyl brands (test method for ASTM G-90).

As a general guideline

The lighter the colour you choose, the cooler the surface will stay and the less deterioration will occur.

Darker colours will fade faster and be warmer on the feet.

All vinyl tends to ‘yellow’ slightly over time. Grays show it the most, while ‘yellowing’ is well hidden within earth-toned options.
Image showing Duradek products and decking