I have a sign on the front of my house. It's the name of the house, "Bethany". I made this sign out of pressure treated plywood, with letters cut out of strand board subflooring. I painted the whole sign with KILZ sealer, then oil-based exterior paint.

Within a few months, the finish started to crack and peel. I need to re-do it so that it will last.

The sign is permanently attached to the house. The guy that did my vinyl siding offered to mount it and make it part the installed siding with sheet metal wrap on the border and everything. At the time I thought that was great, but not now. I need to rent a cherry picker to get to it and sand and re-finish it (it's above a second floor window and there is a porch roof that prevents me from using a ladder). I don't want to have to do it again very soon.

Any recommendations?

Thanks a million in advance.