At a Glance
Grooved/SolidTimberTech Landmark 1-in x 6-in x 20-ft Dark Square PVC Deck Board
Item #3843203 |
Model #ADB15520CG
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Resembles rough-sawn hardwoods like White Oak & Walnut.
No wood in core or cap for unbeatable moisture resistance.
Protected by industry-best Limited Lifetime Product Warranty.
Retains its rich color for decades, without the need for staining, thanks to fade- and stain-resistant technology
Better choice for fire zones thanks to Ignition Resistant designation, Class A Flame Spread Rating, and WUI Compliance
Covered by a Limited Lifetime Product Warranty and a 50-Year Fade & Stain Limited Warranty
Best-in-class durability compared to other composite brands and traditional wood options thanks to engineering with proprietary materials science
Highly realistic wood looks resembling popular hardwoods like white oak and walnut that have been crosscut for a character-rich texture
Absolutely no wood in core or cap for unbeatable moisture resistance, meaning no mold, mildew, or rot damage
General | |||
|---|---|---|---|
Color/Finish Family | Gray | Finish Texture | Variegated |
Type | Deck board | Manufacturer Color/Finish | Castle Gate |
Material | PVC | Color Shade | Dark |
Style | Solid | Series Name | Landmark |
Package Quantity | 1 | ||
Dimensions | |||
|---|---|---|---|
Common Length Measurement | 20-ft | Actual Width (Inches) | 5.5 |
Common Measurement (T x W) | 1-in x 6-in | Actual Length (Feet) | 20 |
Actual Thickness (Inches) | 1 | Square Footage Per Piece (Sq. Feet) | 9.17 |
Features | |||
|---|---|---|---|
UV Resistant | Yes | Lowe's Exclusive | No |
Edge/Bottom Profile | Square/Solid | Water Resistant | Yes |
Grooved for Hidden Fastener | No | ||
Compatibility | |||
|---|---|---|---|
For Use with Porches | Yes | For Use with Decking | Yes |
For Use with Deck Stairs | Yes | ||
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | No | Flame Spread Rating | Class A |
Warranty | |||
|---|---|---|---|
Warranty | Limited lifetime | ||
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 11122000 | ||
Check out the Best Selling Composite Deck Boards on Lowes.com
Ratings may include incentivized customer reviews.
Great Value and Support
Great productcand even better price compared to other options. Ian at the Pro desk was instrumental to my purchase and helped me with every detail!
From Landmark 1-in x 6-in x 12-ft Dark Solid PVC Deck Board Verified Purchaser
Horrible customer service. Trex better option
I had the timbertech by Azek product installed and every step of the way the experience was horrible. Sales guy gave wrong install info. Customer service gave me the run around when railing hardware was faulty. Do yourself a favor and look elsewhere. Had a friend install Trex instead and he told me experience was excellent and I like the color, texture, heat dissipation better on Trex.
Great deck board
Good quality
From Landmark 1-in x 6-in x 16-ft Dark Square PVC Deck Board Verified Purchaser
i love it!!
im an installer and the color and quality is top notch!! looks like the same person left all these bad reviews and i suspect a bad install. i set them 16" o/c and had no issues. one can set them at 14" o/c if they want.
Stay away from this product
We had a 14’ x 42’ deck TimberTech Landmark Castle Gate deck installed. I would NEVER use this product again! The boards flex between the joints (16” centers) for anyone weighing more the 150 pounds, deck just feels flimsy and the boards started warping within a month of moving in to our new home. The manufacturer stated that any glass (windows and doors) overlooking the deck will cause warping due to sun reflection. We used what is supposed to be best and most durable product sold with expectat...
Thank you for submitting your feedback and review. I am truly sorry to hear of the issues you are experiencing with our decking. I would love to gath... Read More

great product fast delivery 👌
From Landmark 1-in x 6-in x 16-ft Dark Square PVC Deck Board Verified Purchaser
Flimsy material
I had these installed on my existing deck frame and there is considerable give when you step between joists. Even when it's not hot out. The product is beautiful but it just feels very flimsy and unstable. Not what you expect when paying for a premium product. I'm very disappointed and I regret my purchase, but now that the deck is installed there's nothing I can do but accept it.
Thank you for submitting your review. I am truly sorry to hear about the issues you are experiencing with your AZEK decking boards. I would be happy ... Read More

Boards have little strength
We just installed a 16' x 40' deck with TimberTech Landmark Collection Castlegate. The deck was built to the manufacturers specifications. When you step between these joists, these boards bend significantly. Our deck feels very unstable to walk on because of this. I will say it is beautiful though. We went with this product because it is advertised as being "cooler" than other products in direct sunlight. This seems to be true, but it is still too hot to step on so that has little value. Also,...
We appreciate your feedback! I am very sorry to hear about your experience installing our TimberTech AZEK Castle Gate decking. We would love to get s... Read More

4 Questions
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What are the board dementions?
Leaismyname on February 26, 20220
Answers
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Material | PVC | |||||||
Actual Length (Feet) | 20 | |||||||
Type | Deck board | |||||||
PVC | PVC | PVC | PVC | PVC | Composite | PVC | PVC | PVC |
20 | 20 | 20 | 20 | 16 | 21 | 20 | 20 | 20 |
Deck board | Deck Board | Deck board | Deck board | Deck board | Deck board | Deck board | Deck board | Deck board |
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Hi there! I'm truly sorry to hear of your experience and can imagine the frustration and disappointment. If you are willing, please email your co... Read More