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. Note: How to use an airless paint sprayer. I'm sure the guy at the rental store showed you how to use the airless (typically with his limited experience of actually painting a house), so hopefully I can offer you a couple new ideas on how to paint your home using an airless paint sprayer. When you first get the airless home, set it in the middle of the area that you would like to start painting. Typically the length of the hose is around 50'. Stretch out the hose prior to painting so that you don't have to worry about unraveling it while you are painting on a ladder. It is a good idea to have a 100' extension cord so that you can bring the airless anywhere you wish to paint without any restrictions. Tip: before you plug in the airless into the extension cord, MAKE SURE THE AIRLESS IS OFF! You don't want the airless to start pumping without paint! Now, when you go to set up the airless, before you turn it on, it's a good rule of thumb to have a second empty bucket next to your bucket of paint. I'll explain why in a second. Place both buckets side by side and place the intake hose (with the wire mesh filter end) into your 5 gallon bucket of paint while the primer hose (usually a lot smaller, about the size of a pencil'ish) is placed in the empty bucket of paint. Before you turn on the machine make sure that the airless is set to prime the machine first. There is a primer valve that you can rotate between prime and paint. A good way to see if the valve is set to prime or paint is to try this little test prior to turning the machine on. While turning the valve clockwise a couple times you will notice that the valve handle will separate from the machine in one position (leaving a slight crack between the valve and machine) while the other position the valve is close to the machine. The position in which the valve is separated from the machine is considered the primer position. Do this multiple times to see what I'm talking about. Don't worry if you keep on spinning the valve, you can spin it a million times in one direction and it won't hurt it. Now that you have the airless paint sprayer and your extension ladders it's time to paint your home. I would highly recommend painting the siding of your home first before painting the trim. The reason being is so you can just spray the house as fast as you can without worrying about painting a section of trim that you already painted. So paint the siding and soffit first followed by painting the trim. Painting the siding using an airless paint sprayer should go pretty fast.
Also, when checking the paint, be realistic and don't ignore areas just for the sake of convenience. It will cost you more in time and money later. Typically if one area of the paint is cracked or peeling, then the paint on the entire car is suspect. Maybe the rest of the car just hasn't quite reached that point of decay, but it will shortly. So if you only fix areas that look bad, you'll likely find that you wasted a paint job when the other areas start to crack or peel in a year or two. Valspar Paint, for instance, also produces paint branded as Laura Ashley, Eddie Bauer, Waverly, and more. These separate lines, or collections, have their own color wheel displays and are usually available wherever the primary brand, Valspar in this case, are sold. Other examples are Disney Paints, currently produced by Behr, and Ralph Lauren and Martha Stewart, formerly produced by Sherwin Williams. Is some color dominating? In conclusion, this article has really just been a "Painting 101" exercise. I'll be adding more articles on the subject once you get more advanced. It's so rewarding to those who stick with it. My work now sells around the world online. So I'm glad I'm glad I stuck with it. It's been infinitely good to me, I've met the most interesting people....including Madonna! And I am so glad I get to do what I want And ultimately it's so gratifying to leave expressions of myself behind forever. And if the owners then turn around and sell my paintings for a fortune later, then that's the cherry on top for me. I feel lucky to have found my calling. And I hope you find it too. And I hope that every single time you view one of my paintings it brings you a little bit of the amazing joy it brought me when I was creating it.