I used a product made by Thro called Kote -a -Deck. They don’t make it anymore and I need to recoat my 15 x 5 front porch. I has two coats of the Kote a Deck over the past 5 or so years.
The two other products my local hardware store carry are Spantex and Graco. I called Graco and they tell me that it is only guarantee for ‘new’ plywood. Well, I’m looking for a ‘guarantee’ but something that will keep the water out. The Kote a Deck has done fine as this is a extremely low traffic area.
Any other options would be helpful.