On Mon, 29 Aug 2011 20:48:42 -0400, Wayne B
wrote:

We've had good luck with 3M 4000 UV Marine Fast Cure Sealant on areas
that that are exposed to direct sunlight.

http://www.jamestowndistributors.com...ct.do?pid=2005


PS, It cleans up very well with WD-40, spray it on, wipe it off.