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Will the cap on synthetic decking peel off over time?

bergsteiger1's picture

I used to use a narrow (2-2.5") strip of the old style non-capped Trex to cover the top surface of 2x4 wooden deck rails.  We get a lot of hail here in Colorado and the top edge of the rails get pretty beat up otherwise.

Since I can no longer find this non-capped Trex decking, can you rip a piece of the capped decking and will the capped surface stay on after it is ripped?  I realize the ripped edge won't be finished looking however you usually can't see the back side of my railings, so I am only concerned abut whether the cap will peel off over time.

I would appreciate any answers or suggestions.