Some paints are two-in-one paint and primer products, or so-called "self-priming paints." These paints are designed to seal and cover surfaces in one coat. But, here's the secret: though it's called a paint-and-primer-in-one product, there's actually no primer in the mix—what you're really working with is just a thicker paint that often doesn't perform as well as using separate primer and paint. Thornton House Painters
Each type of siding will need to be treated differently when it comes to primer and paint at different price points. Exterior paint costs between $35–$80 per gallon depending on the quality you choose. It’s not always true that the more you pay for your paint, the longer-lasting your paint job will be, but you do need to be careful when researching exterior paints to make sure it can weather the local elements well. Thornton House Painters
As you remove the loose paint from your home by sanding and scraping, you'll likely notice individual areas that have become damaged. The damage might be from weather wear and tear, or possibly from animal or insect activity. Regardless of the cause, this is the perfect time to make repairs. This Family Handyman article on exterior paint prep reviews a number of the possible types of damage and how to address them. Once the repairs are done, you can clean off the surface. Sanding dust and debris will come off with a quick wipe down or air spray. But if part of the home is especially dirty — especially from road dirt kicked up by traffic — you may need to scrub the siding, either by hand or with a power washer. If you do opt for power washing, be careful not to spray upward. Always direct the sprayer so that the force of the washer moves in the same direction as rainfall. Your siding was designed to shed rainfall, not protect from water coming at it from below. See How to Pressure Wash a House for more details. Thornton House Painters
In addition, paint features such as mold and mildew resistance are important cost factors. Many mold-inhibiting bathroom paints, for instance, cost substantially more than ordinary latex-acrylic paint—sometimes close to twice the cost. Also, paints that come with warranties from the manufacturer may be more expensive depending on the length of the warranty. (A two-year warranty is standard.)
Satin paints require a bit more care during application in order to avoid lap marks. As with interior painting, it is important to keep a wet edge during application. It is important that satin paints be thoroughly mixed before application to keep the resins and pigments in uniform ratio throughout the can. Satin paints should be mixed just before every painting session. Thornton House Painters
Paint sheen is determined by the ratio of resins and binders to pigment levels in the paint. Paints with a high level of resins/binders create a high-sheen, shiny surface, while those where the pigment levels are high, create a less reflective surface. Generally speaking, glossier paints are more durable, while flatter paints are less resilient but cover better.  Thornton Home Painting
The average cost to paint the interior of a house falls between $1.50 and $3.50 per square foot. If you’re doing the ceilings, walls and trim, the cost per square foot will likely fall between $3 and $4. If there is damage to the walls that needs to be repaired before painting can proceed, you’ll pay extra. These are the average costs if you pay a service provider to paint your home for you. You may also choose to do the paint job yourself. Thornton Home Painting

Glossy finish paints also may be a logical choice where an exterior will need to be washed frequently, such as in a climate where wind-blown dust is a problem, or in a home where active kids may soil the siding. But the reflective shininess will also spotlight every bump and imperfection, so for most people, they are not a good choice for large areas of the siding.  Thornton House Painters

Exterior paint averages $25-$40 a gallon, and a 3,000-square-foot home takes 15 or more gallons of paint, or $375-$600 just for the paint. However, really premium paint can cost $50-$100 a gallon, or $750-$1,500 for that large home. Doing it yourself also requires renting a pressure washer or sprayer for $50-$100 a day; extra-long ladders or scaffolding at $20-$75 daily; and a power sprayer for $50-$100 daily, plus masking tape, drop cloths and other supplies. However, it's possible to paint a large, two-story house for materials-only costs of $400-$600. Thornton Home Painting


The real bulk of the work in exterior paint prep is surface prep. And make sure to avoid these missteps. The most difficult part of that prep is sanding and scraping. If you're working on an unpainted surface, you can give it a quick prep and move on. But most previously painted surfaces will need to have loose and flaking paint scraped off and the edges sanded flush. This is a tedious and tiring process, but it's an incredibly important part of the process. Painting over flaking paint will only result in new paint that flakes off, and skipping the sanding process will leave large, unsightly "divot" areas on your home. Power sanders can help speed the work, but be sure to use proper respiration and dust control. See this article on painting preparation for more tips on the critical steps of sanding and scraping. Thornton House Painters
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