[Jackbass]

This is not about plug building but I figured with the collective knowledge on finishing we have here. I may get the answer I need.

Ok so. Last year I built some adirondack chairs with a wood named Yellow Balau with a couple of accent stringers made of purple heart. A pair of chairs and a table to match. The table and chairs after a year of weathering has begun to peal. I am curious if any one has experience with Balau or purple heart? They were initially finished with spar urethane. Hand rubbed with gradual sanding between coats. I am just wondering if possibly oils from the wood are trying to escape? Causing the peel? The next question obviously is what would you use for finish?