Thanks for calling me out there Chris. Here's where my non-myth info came from:
http://www.por15.com/POR-15/productinfo/1GB/Last paragraph before the pricing:
POR-15® is sensitive to UV light (sun) and must be topcoated for prolonged exposure to sunlight.
Topcoating is not required for areas not exposed to sunlight.
Your right, I did not read the msd/app. sheet but I took this statement from their website at face value. I am not in the myth business my friend.
Hank
