As with all of my tips, they are MY opinion and preference. Everyone has their own idea of what they like best and what works for them. With that said....
* Polyurethane is a liquid that is brushed on top of the paint. When you're using Chalk Paint, it is absorbed into the paint and hardens the surface when dry.
* Wax is rubbed or brushed into the surface of the paint, is absorbed - wiped off and then cures the paint over a 30 day period to a hard finish. (waxed pieces can be used immediately - but gently)
Polyurethane comes in Brush On or Wipe On. The finish choices are Matte, Satin or Gloss. For me, if I use it, I like Brush On - Satin finish.
Now, what is the difference in the Poly and the Wax? In my opinion, wax is the best for getting a nice soft finish. You can rub the wax into the chalky surface of your paint and lightly wipe it off, producing a traditional matte finish that is associated with a vintage piece or buff and get a slight sheen.
With Polyurethane, you get a hard surface but get more of a shine. Depending on the color of your paint, it can be streaky and blotchy. Using Poly on dark colors, like Black and Navy are two of the colors you will experience the streaks. If you're working with Creams and Antique Whites, the finish is even and streak free.
If doing the top of a table that you're going to use daily - and have children, I would probably use the Polyurethane. Several coats will make it durable enough to withstand the wear and tear of toys, color crayons and meal time. Wax is durable, but in this case I would not depend on it to withstand the use.
Three posts ago, I gave you a tip about using Fiddes Wax and mineral spirits. That is my finish of choice. I use it on almost every piece I paint.
To see what you prefer, try each on a small project. That'll give you an idea of how they differ.
It's been a trial and error for me to figure out what works best. Each piece has a need for a certain finish. You first have to decide how much it'll be used and decide on what look you prefer.
I hope this has been helpful.
Paint on...
Patti
