Concordia Horizon Decking FAQ

How do I remove tree sap from my decking?

Because tree sap is especially sticky, neither ordinary deck cleaners nor power washing will work. We recommend using WD40 to remove the sap. Be sure to follow all manufacturer’s instructions carefully. Please note that WD40 also is effective in removing the labels that are found on the boards when they arrive at the job site.

How do I remove the label adhesive from my Fiberon deck Boards?

When you remove the labels that come standard on our deck boards, there may be some adhesive left behind. We recommend WD40, denatured alcohol or PVC pipe cleaning liquid as the most effective means of removing this adhesive. Traditional deck cleaner or power washing may not remove the adhesive completely.

I accidentally chipped a piece of my Horizon deck board. Can I repair it?

While Fiberon decking is resilient, some outside sources can damage it. Certain minor issues can be fixed with a brass bristle brush or heat gun. Or, since Horizon Decking and Symmetry Decking are reversible, you may opt to remove the chipped board, flip it over, and re-install it.

If you’re not sure what the best course of action is for your particular situation, we recommend contacting our Technical Services staff via email. Please enclose a photo of the damaged board, along with a note explaining what happened. Our email address is We look forward to helping you.

How do I clean Concordia Decking Horizon Collection?

For general cleaning, use soap and water or mild household cleaners.

Is there a pattern repeat with Concordia Decking Horizon Collection?

There are four different grain patterns used with Horizon Collection. The patterns are different on the front and back of the boards, giving each piece a more natural look. Both the grain patterns and the color streaking repeat every 70 feet.