Roll and Tip
Couple of suggestions.
Rolling and tipping of a two component paint cannot be compared to rolling and tipping of a single component urethane such as Easypoxy.
EasyPoxy is much more forgiving. It looks great, however, its a 5year paint job, where most Two part urethane coatings are 10-15 dependant upon the up keep.
The ultimate deciding factor in your finish coat is all prior coats and most importantly SURFACE PREPARATION. I would highly recommend practiceing on a piece of plexi or similiar, smooth substrate. The primer will need to be sanded perfectly smooth. Before you sand try applying a form of a "guide coat" (guide coat is a mist coat of a contrasting color, when you start sanding every single hint of the guide coat color should be gone before you topcoat- this ensures a perfectly smooth substrate) id sand with 320 or >. Make sure you follow the manufacters Dry to recoat, envrionmental requirements to a T.
As for rolling and tipping, dont even try it by yourself. One person needs to roll and one person needs to tip. The combination of the base and catalyst mixed together causes a chemical cure in lieu of a air cure as in EasyPoxy. You want to allow the as-applied coating to have as much time to "lay-out" as possible before it starts to kick. You need to stay right behing the person rolling with an unloaded brush. (keep a thing of thinner beside you to keep the brush unloaded and dry). The idea of the tipping is to only take down the stipple caused by the roller. The brush shouldnt be drug through the paint, only enough to touch the peaks but not the valleys (if that makes sense). A huge no-no is to never go back and fix anything. if you get going and notice a run or a bug or piece of dust a few feet back. forget it! You will be able to take care of it prior to any subsequent coats. sanding with some 1000 grit will do the trick but only if its cured enough to sand (should not be able to leave a finger nail print in the coating with minimal pressure) If you are unhappy with the way the first one or two coats layed out, dont settle for less. Let it cure up and go to it with some wet sanding. Your finish job is only going to be as good as your prep work. There is no such thing as too much prep work.
Another good candidate for two part high gloss urethane is PPG Pitthane Ultra. Half the price of the Interlux product and is rather forgiving.
Oh and look at spending around $25-30 for a good quality badger hair or similiar brush. The solvents within 2 part paint will eat up a lot of brush materials and rollers. Phenolic closed cell, solvent resistant is the way to go on the roller.
I think there is a handfull of videos on youtube.com of rolling and tipping as well.
I think this should help.
