Key phrase in this posting is "water resistant". Don't confuse it or let your client confuse "water resistant" with "water proof or weather proof". However in the past few days I have discovered there is a type of outdoor, supposedly "water proof" MDF though I have not used it.
Check out this link for earlier Shopbot Forum talk about this very product.
http://www.talkshopbot.com/forum/showthread.php?t=1984
Enjoy!
Nicholas Traub
Principal Graphic Designer
Director of Traveling Exhibitions
Traub Design Associates, Inc.
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ShopBot PRS Standard 48x96
2.2HP Spindle
2 - 3.5HP Vacuum/Blowers
1 - 6" Indexer
1 - Digitizing Probe
8 - Pneumatic alignment pistons
1 - Pneumatic drill
Grizzly 3HP 220v Cyclone Dust Collection
Donek Drag Knife
KentCNC Dust Boot
Lenovo ThinkPad W510 running Windows 7
Vectric VCarvePro
Sketchup 2016
Fusion 360
Adobe Creative Suite