On Apr 23, 6:54 pm, Don Wiss wrote:
I have a door from my kitchen to the deck. It had been an ordinary wood
with a clear finish. It opened outwards. When it rained I would leave the
door open. For years the finish was fine. Then I upgraded to a mahogany
door. Whatever finish the fellow put on blistered on the outside in a year.
And I haven't left this door open in the rain at all.

So what is the most lasting finish? Thinking like a boater I would think
that spar varnish would be good. But that was years ago. So what should I
use?

Don www.donwiss.com (e-mail link at home page bottom).

Go to a real paint store with this question. I use Sherwin Williams
but you should use whoever seems knowledgable in your area. Look for
experience behind the counter. Avoid the Big Box when buying paint.
You need a very high quality exterior rated varnish or polyeruathane
for something in the sun all the time. It won't be cheap but you
won't need much.