[theastronaut]

Self leveling is what you want for drip rails, it will flow and level out to a glass-smooth finish that only needs scuffing before sealer/paint. It's too thin for normal seams so you'll want a normal seam sealer for that. Two part sealers are best, they won't shrink later. I like Fusor 122ez for drip rails and SEM 39377 for other seams.