Replies

1. 
   sapwood | Mar 24, 2006 12:41am | #1

   I have used gallons of that material on all sorts of furniture. It holds up well there so I wouldn't know why it wouldn't hold up on window trim. It goes on like a tung oil finish (slobber it on, let it soak in, wipe it off.... repeat for at least two more coats) so if this trim is already installed, then I wouldn't use it...... too messy.

2. 
   SteveSchoene | Mar 24, 2006 05:30am | #2

   This appears to be just an oil/varnish mix that shouldn't be allowed to build a surface film. It won't offer a lot of protection from things like condensation or from the sun.  It does have the benefit of being easy to restore.  My guess is that on the south side, or other really sunny windows, you will have to apply another coat about every year or so to keep it looking good. 

   Ideally, you would treat this as if it were exterior wood.  About three coats of marine spar varnish, with the last one satin would hold up really well, and also give some protection to the dye, which sunlight will fade fairly quickly.  More work than would be usual for window trim, but that's kind of the choice that comes with using stain grade trim.  If you have low e windows with reduced UV transmission the finish on the trim will last a lot longer.