Hiding power comes from the paint's pigment and is affected by the manner and thickness of the application. Color retention is the ability to maintain its original color during exposure to sunlight, etc. Chalking resistance prevents the white chalky powder from forming on the surface and lightening the color of the paint. Chalking occur over a period of time. Blister resistance keeps excessive moisture from coming through the substrate and affecting the paint layer. Tip: if paint is applied over a damp or wet surface, blistering is imminent.
You scuff up existing paint for two reasons. First, you want to get rid of any oil, grease or dirt trapped in the top layer of paint. This is the stuff that cleaners and degreasers can't get off. The second reason to scuff is to set up a physical bond for the new primer and paint to adhere to. You want to give the old paint some tooth so the new sticks better.
One precaution: You can't paint with it in cold weather. The chemical reaction that transforms the water solution into a durable finish will not take place if the temperature is below 50°. (Conventional oil paints don't stick well in cold weather, either.)
The lite version of Galkyd is simply thinner. I use it more than the other. I love it. Paintings I did 16 years ago using Galkyds look as pristine as the day I painted them. You'll also need a canvas and some paint. I buy a tube of red, green, blue, purple, yellow, brown, white and black. I prefer what's called Ivory Black and a soft mixing white as you'll add white to a lot of different colors to make lighter versions. From these basic colors you can make any exotic color by mixing them in combination's. Be creative and experiment. And don't be afraid of color, because color is the most popular in museums! The bright paintings are historically the crowd favorites. As for color variety from these basic colors, mix red and white to make pink, mix yellow with green to make lime green, white with blue to make light blue, white with black to make gray, etc. Use your common sense and play with it! You'll also need pencils, an eraser and some Turpentine or Turpentine substitute. Keep your brushes soaking in it in a plastic cup to keep them clean and ready for your next color choice.... and to keep them from drying out.
Anti-condensation paints are used for rooms with humid conditions such as kitchen and bathrooms. This paint is usually formulated to prevent condensation and often includes fungicide.
Traditional Paints. Available from specialists such as Farrow & Ball and The Real Paint & Varnish Company, lime wash and distemper paints can be useful for restoration projects, although some of the contents are potentially hazardous and can irritate eyes and skin. Use the modern equivalents where possible, as these are usually safer and more effective.
Satinwood or semi-gloss - These paints are commonly used on woodwork, such as skirting boards. This sheen level is between eggshell and gloss.