Not really, especially if you plan on applying two coats of finish.

I've had others say you should always do two coats, and that probably is best, but I used the Signature paints in a few rooms and it did cover very well in one coat. That signature paint seems thicker than a lot of other paints. In comparison, I used a Benjamin Moore (Desert Tan) in my famiy room and after one coat, you could see it really needed a second, and it is a fairly light color that was applied over white walls. In the rooms with the Signature paint, I did have to roll over a couple spots where I could see some speckles of the old paint barely showing through, but that was all. I did our living room, daughter's room and laundry room and all are holding up well. I haven't had to clean the walls much, though, so don't know how much scrubbing it will withstand. I did my kitchen in a Kilz one-coat coverage paint after Redbazel's recommendation on this forum. It covered amazingly well in one coat - even being red, but I could see a few areas where it looked a little thin (pinkish). I had another can of paint, so I went back and started rolling over those area, but it was going so fast because I didn't trim it again, that I did the whole room. It went so much faster in comparison to the first coat, and I didn't use as much paint on the second coat. So if you do decide to do a second coat it may go up a lot quicker. The Signature one-coat rooms look great, too, though. A question for those of you that always apply a second coat - do you trim again as well, or just roll? I just rolled as close as I could to the ceiling and mouldings.

Yep, if you dont like it now, it will be bugging you later. You dont necessarily need a level 5, but thats your call. And gray is right, if you’re going to do it, now is the time.

No bubbles that I noticed but my tile has a rough texture to begin with so it’s hard to tell. I spent a lot of time prepping. I cleaned for 2 hours, doing multiple steps, then I sanded it to rough it up, then vacuumed and cleaned again, plus I spent hours removing old caulking. Painting was the easy part! Haha. Maybe it’s the roller you used? I used a little mini mohair one. Worked well.