Quote:
Originally Posted by rfuerst911sc
My research shows cheaper products tend to be plastic skinned on top and sides with the bottom not covered so exposed to moisture which can rot/mold . I also didn't realize you're supposed to treat the ends with a waterproofer during installation .
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^this.
Family used to have a cheap white composite deck I would take care of.
The unsealed ends would turn dark green/brown from the mildew prevalent in the area.
Every year I would power wash for a couple of days...high power and slow moving and a very big water bill...and at the very edge of cutting through the harder plastic surface.
(I should have been spraying everything down with Wet-N-Forget during those dry spells.)
(I should have also been thinking about sealers.)
It also got rained on by a neighbor's sappy pine in one spot which left major divot scars.
If there are environmental factors around which require cleaning often, consider the bigger picture and what product will work best.
My covered pine porch with Cabots australian oil stain looks pretty dang good but outside in the direct sun and snow the same product doesn't seem to do as well.