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. Cheaper then doing it yourself. Some would argue that if you're going to all the trouble to fully prep the car yourself, then why not just shoot the paint as well? Why get a shop involved? The answer is simply that you'll get a better job and for less money. Some would argue with this, but the fact is that if you've never sprayed a car before then your first car will have a steep, and expensive learning curve. Laying down an even, consistent coat of paint takes considerable practice. Also, paint and equipment is not cheap. You'll need to buy primer, color coat, clear coat, reducers & catalysts. None of these are inexpensive and you can easily spend as much in paint materials alone as the cheapest paint job at Maaco or similar shop. EXTERIOR PAINTING. In buying paints that you are going to use for your exterior house, you have to pick a brand that has essential characteristics: hiding power, color retention, chalk-resistance, and blister resistance.
How Much Paint You Really Need. How much paint you will need to satisfactorily complete a paint project is determined by 2 factors. The first, paint coverage, is a familiar concept to most people. It simply concerns the square footage of surface area to be painted, and "paint coverage calculators" abound on the web. However, the second concept, paint color coverage, has a much more pronounced effect on how much paint will be needed and the cost of paint projects. Unfortunately, paint color coverage is a novel concept to many painters and, in fact, is poorly understood even by many professionals. Knowing the secrets of paint color coverage will allow you to reduce the number coats you have to apply and minimize how much paint you have to buy. Feel free to email me if you have questions at the email addresses below. But most important, you'll find that with each painting you'll get better and better. Carry forward everything you learn from each work and eventually you'll have real talent! But only if you keep at it. And don't worry about people telling you you're crazy. They told that to van Gogh too! Sweet justice Vincent, sweet justice. He's certainly getting the last laugh, isn't he? And the world will know who Vincent van Gogh was for the rest of time. Not a bad gig. Five categories are used to describe VOC content. For guidance, a minimal VOC content is up to 0.29 per cent, whereas a very high VOC content is above 50 per cent. All brands have, where necessary, reformulated their ranges to give minimal VOC content. Now is the time to paint the exterior of your home. It is best to start painting on the sunny side of your home first and the reason for that is because it's likely there is still dew on the shaded side of your home in the morning. Tip: Your house must be perfectly dry in order to start painting.