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Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board

Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board

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$39.98at The Home DepotObserved at 9:01 AM

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Our take on the Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board

This is a single 1 in. x 6 in. x 20 ft. TimberTech AZEK composite decking board in the Coastline color with a square edge. It is made of PVC with no wood in the core or cap, so it resists moisture, mold, rot, fading and staining and needs no sanding, staining or sealing. The square edge gives a finished look on perimeters, stairs and picture-frame borders. The best new price is $39.98 at The Home Depot as of November 5, 2026, and only one store lists it new, so there is no lower price to compare against right now.

Best forDeck perimeters, stairs and picture-frame bordersHomeowners who want a low-maintenance deckHumid or wet climates where wood rotsModern, light-toned outdoor designs
Pros
  • No wood in core or cap, so it resists moisture, mold and rot
  • No sanding, staining or sealing needed
  • Fade- and stain-resistant capped surface
  • Realistic wood-grain texture
  • Square edge finishes visible borders cleanly
Cons
  • One 20 ft. board only; a full deck needs many
  • Square edge is not for hidden-fastener field boards
  • PVC decking costs more than wood or composite
  • Heavy and long; needs two people and a truck
  • Color and grain vary slightly between boards

Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board prices at every store

  • The Home DepotNew

    Availability unknown

    $39.98Observed at 9:01 AM
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Also available at

  • Supply OntimeCheck price at Supply Ontime

Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board price history

Lowest price we've seen: $39.98 on Nov 5 at The Home Depot. Tracked across 1 store since Nov 5.

What reviewers say

Owners of TimberTech AZEK PVC decking generally report it stays clean and looks new after years outdoors, with little fading. Some note the upfront cost and that light colors show dirt between cleanings.

Pros
  • Holds color and resists fading
  • Easy to clean with soap and water
  • No rot or splintering
  • Realistic wood look
Cons
  • Higher price than wood
  • Light colors show dirt and pollen
  • Can get hot in direct sun
  • Scratches from furniture and pets

About the Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board

About This Product

The TimberTech AZEK Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board combines the sophisticated appearance of natural hardwood with the long-lasting performance of advanced PVC decking. Its realistic wood-grain texture and soft Coastline tones create a clean, contemporary appearance that complements decks, porches, stairs, and other outdoor living spaces.

Made with no wood in the core or cap, this PVC decking provides exceptional resistance to moisture, mold, mildew, and rot. Its durable surface resists fading and staining while eliminating the regular sanding, staining, and sealing required by traditional wood decking. The square-edge profile creates a finished appearance and is ideal for deck perimeters, stairs, picture-frame designs, and other areas where board edges remain visible.

Key Features

Realistic Wood Look – Detailed wood-grain texture provides the natural character and appearance of premium hardwood.

Coastline Color – Soft, natural tones create a bright, sophisticated look for modern outdoor spaces.

Advanced PVC Construction – Made without wood in the core or cap for superior moisture resistance.

Low Maintenance – No regular sanding, staining, or sealing required.

Fade & Stain Resistant – Engineered to maintain its attractive appearance through years of outdoor exposure.

Highly Durable – Resists cracking, splintering, mold, mildew, and rot.

UV Resistant – Designed for long-term performance under exposure to sunlight.

Square Edge Profile – Creates a clean finished edge for deck perimeters, stairs, picture framing, and exposed edges.

Versatile Application – Suitable for decks, porches, stairs, and other outdoor living areas.

20 ft. Length – Provides approximately 9.17 sq. ft. of coverage per board and helps minimize seams on larger installations.

Questions and answers

Is this board worth the price?
At $39.98 at The Home Depot as of November 5, 2026, you pay more than for wood, but you skip years of staining and sealing. It makes the most sense for visible edges and stairs where looks and durability matter.
How many boards do I need for my deck?
Divide the deck width by the 5.5 in. actual board coverage, then add 10 percent for waste and borders. A 12 ft. by 16 ft. deck needs roughly 40 boards plus fascia.
Can I use this with hidden fasteners?
No. The square edge is meant for exposed edges, so it is face-screwed or used as a border. Use grooved boards with hidden clips for the field of the deck.
Does it need sealing or painting?
No. The PVC cap needs only periodic cleaning with soap and water. Do not paint or stain it.
Will the Coastline color match other AZEK boards?
Coastline is part of the AZEK line, so match it to the same color name and collection. Buy all boards for a project at once, since dye lots can vary slightly.
When is it cheapest?
Decking usually drops in late winter and early spring before deck season. Watch for Home Depot promotions and bulk pricing on full-deck orders.
Where is the Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board cheapest?
At The Home Depot, for $39.98, as of our latest check.
Where can I buy the Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board?
2 stores we checked sell it, including The Home Depot, Supply Ontime.

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Buying guides that pick the Composite Decking 1 in. x 6 in. x 20 ft. Coastline Square Edge Board

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