As far as paint (water based) goes, I heard that exterior gloss is the best, followed by semi-gloss, then flat. Still true?
I read that polyurethane (water based) was not suitable for outside, which never made sense to me. Is this true?
Recently here, someone made reference to wood stains not providing much wood protection. If I use stain, what clear coating can I put over the stain, that will do a good job?
Are "water seals" (the proverbial Thompsons, which I understand is middling in effectiveness) generally clear? Can one mix stain in with them? What is regarded as a better seal, that is generally available?
For non-staining apps, I have tons of exta paint lying around. Is it OK to use any ole paint as a primer, without compromising the final coat? iyr, I kluged together a paint sprayer/pressure pot deal, which worked great on a T1-11 gate. I will be using this sprayer as much as possible. More on my Sprayer Saga in another post.
I heard of something called "edge primer", for the ends, edges of wood. Worthwhile? Good for non-edges?
For the plywood planters, I have some Frontier fibre roof coating, which is like a paintable tar, close to the viscosity of paint. This was recommended by some gardening sources. Should I prime the planters with regular paint before applying this roof coating?
Any advice, tips, experiences, war stories would be helpful.