One of the local shed manufacturers knocked down the prices of their 3-year-old display model sheds, and I bought one for the same price of building the same one myself. The siding is weathered PT plywood, and I'd like to paint it. I've heard conflicting reports from locals about how to paint it. Some say "just buy exterior paint and paint it" and some say "oh you need to use a special stain" and some sources online indicate I should use an oil-based primer, followed by 2 good coats of exterior paint. What do you think? [ATTACH]55181[/ATTACH]

I am rebuilding the clubhouse that I grew up playing in, and I'm going to use it as a storage shed. By coincidental timing, my parents are building a new garage next month, and I am taking all the 3/4" x 8" Douglas Fir ship-lap panneling that lined the interior of the 80+ yo garage that is getting replaced. I am planning on using it for the siding of the shed, and the interior panneling, but since it has been protected and dry for so long, I want to make sure I seal it really well to protect it. The problem is, this is going to be my first time finishing wood, other than using linseed oil for wooden tool handles and whatnot. What would be the best product to use for sealing the panneling? Of course the first think that popped in my head was Thompson's, but I don't know if thats the best choice. I know there is also Behr, Sikkens, Sherwin-Williams, and a whole slew of others; so many options is what makes it confusing. I want something that will seal and protect it very well, but still allow the natural wood color. What do you guys recommend? Thanks.