Yes...the surface of whatever you're painting needs to be thoroughly cleaned prior to painting. This is especially true for exterior painting. Dirt and salt deposits can accumulate on a house. With darker colors it's more difficult to see, but the dirt is still there.
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Usually teams are comprised of 3-4 people. The crew foreman/supervisor usually has 5+ years of experience. The next 2-3 guys will typically have 3+ years of experience. If we interview someone who doesn't have a background in painting but seems motivated, reliable and willing to learn, then we'll give that person a shot as a painter. They start at the bottom by running ladders, setting up parts of the job, prepping and cleaning up. They usually don't start painting right away and are gradually brought along.
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Essentially they are the same with some minor differences. The biggest difference is thickness. Paints have more filler pigments while solid stains have less.
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While it's human nature to blame whoever last worked on something, it's not always warranted. When a painter does a job improperly, thereby causing the paint to fail, it's usually for one of three reasons. 1) He didn't adequetely prep (scraping, cleaning, priming etc) the surface prior to painting. 2) He painted over a wet surface which prevented the paint from bonding properly. 3) He painted in direct sunlight on a hot day. This causes the paint to skin over and traps the solvent. As the solvent tries to evaporate, it creates peel blisters. If your painter followed standard painting protocol, more than likely the cause of the problem lies with the structure being painted.
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Depends what you're painting. If it's a surface that's never been painted, then you have to look at what the surface is first. If it's wood, then you need an oil primer. If it's metal, you need a direct to metal primer. If it's vinyl shutters, you need a specialty primer that can bond to a silicanized surface. If you're looking to hide a color or will be painting a dark color, use a hiding primer and tint it as close to the final coat color as possible.
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Generally, you will want to repaint due to fading, trends or just a color change. The life of the paint significantly depends on the quality of products you use and the abuse it receives from the elements. Being proactive and having your biggest investment repainted before major paint failures occur will save you great amounts of money in the long run. Peeling and blistering paint is extremely labor intensive because it requires our crews to scrap, sand, and prime. Deciding to paint your house before these problems occur will eliminate these unnecessary costs.
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