Composition Wallboard. Composition wallboard usually presents no particular painting difficulties if the ordinary precautions are observed, such as making certain that the surface is dry and free from grease and oil. The painting procedure for wallboard is the same as for plaster; it requires a priming and sealing coat followed by whatever finishes coats are desired, or may be given one-coat flat or resin-emulsion type paint.
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.)
Suppose it rains while you're working? Vinyl paint dries fast - as quickly as 10 to 30 minutes - and will withstand a shower after that time. It takes another 12 hours to "cure," by then forming an exceptionally tough, long-lasting film that stands up well against weather, sun, salt air and factory smoke.
So how does a paint company accomplish this color hypnosis of potential customers? Well, it starts with the sample card. Have you ever noticed how the brightest, most saturated color sample cards are always the first row you see in a paint display? Well you guessed it... paint companies are playing with a loaded deck (of sample cards, that is)!
Practically every manufacturer has a "color system," a fat book of color chips with instructions for duplicating each chip. This is accomplished by intermixing cans of colored paint, by adding a concentrated color to a can of white or colored paint, or by adding concentrated color or colors to a can of neutral "base" paint. And for those who don't want any guesswork there's the Color Carousel that mixes the paints right in the store. Whatever the method, the result is a range of colors such as no amateur painter has seen.
If you desire your interior to look like it was created by a professional, then you must understand the intricacies of color. If you are not sure how to juxtapose hues stick to a neutral palette, because clashing, gaudy combinations can look hideous. When you plan your room are you making sure to employ the application of color in the most beneficial way possible? Using bric-a-brac is a straightforward method of balance. If you desire your interior to look like it was created by a professional, then you must understand the intricacies of hues.
Some acrylics are also recommended for exteriors (over the same kinds of materials as vinyl paints). Here it has a big advantage - you don't have to pick your painting weather so carefully. It can be applied on humid days and in cold seasons, so long as the temperature is a few degrees above freezing.