Composite flooring options for dock

[Slackerace]

I'm in the process of building a 12x16 dock that will extend out over the water from the bank of a pond behind my house. The dock is a permanent (non-floating) dock and the framework is all steel. There are 3 rows of 3 pipes that were driven down 3'-4' into the pond floor. Each of the rows of posts are connected by 3, 3" x 16' channel iron. 8" c-purlins on 16" centers have been welded across the channel iron to serve as floor joists. The actual dock / deck floor surface will be screwed to these floor joists.
I'm looking for recommendations as to what type of flooring material I should consider. Wood is not an option that I'm considering due to the constant maintenance concerns. The dock will also have a railing on all sides except the bank.

 

[kd3pc]

unless you buy top tier composite decking, you will be sorely disappointed. Likewise with the "invisible" fasteners..while you can not see them, water will find them and react with the screws and voila something disappears. Worse are visible screws, unless treated or very good stainless, even then they suffer crevice corrosion over time and will seize in the channel.

Colors heat up, such that many can not be walked on without shoes. Wood stays much cooler. Composite pricing is several times what similar wood products are.

Best of luck, were it me, I would walk the docks or neighborhood and take notice of products that you like and ask the owner for details. I would stay as far away from the box stores as possible, as their products are the cheapest/lowest quality, even worse are their fasteners.

 

[930dreamer]

We have a composite deck on our pool (Deck choice from Lowes) it's smoking hot in the summer and molds. Class action law suit on product. $$$$ back.

 

[RStewart]

I know Trex might be bouncy. I know for stairs the stringers needed to be closer than if wood was used. 5 steps 3' wide used 4. The deck was also reinforced with blocking. Also maintenance free, I think not. Not as fussy as pressure treated but needs some care. Maybe Trex is junk?