4200 and especially 5200 are adhesives and overkill for the purpose.
I would use silicone. The Roof & gutter outdoor stuff that can be in the sun.
Way cheaper and easier to remove when you check in there again in the next year (or 2). I always preach to check in there every season and reseal.
Instead of pressure treated, get some 3 "pvc trim board at Home Depot. Lite & never rot.
Last edited by SkunkBoat; 03-05-2018 at 01:35 PM.
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