Which is cheaper per square foot?

The Rocky Harbor board is cheaper per foot, about $3.25 versus about $4.66 for the Pebble Grey board at the listed prices. It is also narrower, so you need more boards to cover the same deck.

Both are Trex composite with a protective shell and a 25-year limited residential warranty. The Rocky Harbor listing adds fade and stain coverage in writing, which is the stronger warranty claim of the two.

Can I use hidden fasteners with both?

Yes. Both are grooved-edge boards made for Trex hidden fastener systems, which give a screw-free surface. One listing also calls the Pebble Grey board square edge, so confirm the profile before ordering.

Which color hides dirt better?

The Rocky Harbor board has wood-grain streaking and sandy undertones, which hide dust and scuffs better than a solid grey. Pebble Grey looks cleaner and more uniform when new.

How many boards do I need?

Divide your deck width by the board face width, then add about 10% for waste and cuts. The 16 ft Pebble Grey board spans longer runs with fewer joints, which saves fasteners and labor.

Is the Pebble Grey board worth the extra cost?

Yes if you want fewer seams and a solid modern grey on a large deck. For a small deck or a tight budget, the Rocky Harbor board does the same job for less per foot.

Composite Decking 1 in. x 5-1/2 in. x 12 ft. Rocky Harbor Grooved Edge Board vs Trex Select 1-in x 6-in x 16-ft Pebble Grey Grooved Composite Deck Board

Buy the Trex Select Pebble Grey board if you want longer runs and a solid, uniform grey; buy the Trex Enhance Naturals Rocky Harbor board if you want a streaked wood-grain look and a lower price per board. The Rocky Harbor 12 ft board is $39.00 at Chinook Lumber as of November 5, 2026, and the Pebble Grey 16 ft board is $74.50 at Home Central as of November 5, 2026. Per foot, the Rocky Harbor board is cheaper, but it needs more boards and more hidden fasteners to cover the same deck.

Today the Composite Decking 1 in. x 5-1/2 in. x 12 ft. Rocky Harbor Grooved Edge Board costs $35.50 less at its best price.

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