Is Cellular Pvc Waterproof

Builders like cellular PVC trim for a lot of reasons. It’s lightweight, durable, and waterproof. You don’t have to paint it; but it holds paint well. But there is one drawback: plastic trim doesn’t move because of moisture the way wood does, but it does move because of temperature.

Is PVC board good for outdoor use?

The applications are similar to wood, except it won’t rot, crack, cup, split or warp like wood and its resistive to termites and wood boring insects. PVC trim is naturally white throughout, which makes it an excellent choice for trim on the outside of your home.

What is cellular PVC made of?

PVC trim is made from a honeycomb, cellular structure of polyvinyl chloride. The honeycomb makeup of the product means that it’s completely impervious to moisture, even when cut. Unfortunately, this can lead to issues all its own, such as thermal expansion.