Azek - Dexerdry

Dexerdry® Installation

The Dexerdry® system is a UV and weather-resistant thermoplastic insert, installed between grooved deck boards to create a sheltered, dry under-deck space. 

Dexerdry® allows you to create a weather-proofed decking surface with most major brands of grooved decking, including TimberTech®, Azek®, Trex®, and Fiberon®.

(availability may vary).


Dexerdry® fills the gap left between deck boards, which creates a solid barrier between the above-deck surface and the framing and space below. 

This solid barrier makes the surface of the deck smoother, allowing seeds and debris to wash off easily, rather than get stuck in the gaps between decking.

This barrier also keeps humidity and bugs from coming up from beneath the deck.