Azek Decking Reviews Complaints . This rating has improved by 3% over the last 12 months. Common complaints about azek decking are that it stains easily, fades quickly and sags under the weight of heavy objects such as barbecues. Azek Decking Reviews 2021 Enjoy the Outdoors in Style! Barter Design from barterdesign.co Some negative reviews on decks.com report that greasy spots on the decking are hard to remove and that power washing damages the deck finish. As most of you are aware, there is a very big difference between the original azek boards (harvest collection) and the newer board such as fawn (arbor and terra collections). The biggest complaint in timbertech decking reviews is about the overpaid installation service or the difficulty in.