PaintPRO , Vol. 7, No. 4
July/August 2005
PaintPRO , Vol. 7, No. 4

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Related Readings:
Ebonizing
Conversion Varnishes
Metallic Paints
Color Paint Coordination
Color for Kitchens & Baths
Glass Textile Wallcoverings
The Winning Ways of White Paint
Profile on Design: Metallic Paints
Refinishing Sinks & Tubs
Who Needs Paint: Colored Plaster
Other articles in this issue:
Success with Drywall
Color Additives
Painting Historic Houses
Masonry & Stucco Maintenance
Painter Profile: San Francisco Local Color
Manufacturer Profile: Royal Design Studio
Paint Industry News
Product News
Product Profiles
Toolbox: Hand Tools for Painters
Tools for Vaulted Ceilings
Painting Tips
 
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PaintPRO Current Issue

Color Additives

 

 

Paint Colors,
Color Additives

Pump Up Your Color Palette. Using color additives allows you to offer custom colors, match historic hues, and please the pickiest client.
by David Thompson

There was a time when every painter worth his pigment carried around a little wire rack of color additives and mixed his own colors on the job site. Color mixing was a necessary skill that was passed down from one generation of painter to the next.

Metallic Powders
Metallic powders can be added to coatings for gold, silver, bronze, aluminum and other effects. They can be added to oil-based or water-based paints, as well as glazes, varnishes, lacquers, and other clear coatings.Metallic Powders
Gold Leaf & Metallic Powders, in California, makes 80 colors, including metallics, for professional faux finishers, architectural restorers, sign makers and others.

t offers both an indoor and an outdoor line of metallics. Metallic powders can oxidize if exposed to weather, which is why the company offers a special nontarnishing outdoor line of metallic powders. If a tarnished or patinated look is desired indoors, there’s an aging additive available.

“If you use an indoor powder outdoors, you have a serious problem, because it will oxidize and change,” Neuberg says.

Conversely, for the interior, metallics can be patinated or further oxidized by putting a patina aging solution over them.”

As the technology that suppliers used to mix colors in the store improved, the need for painters to master mixing their own colors diminished. By the 1980s this once commonplace practice was in sharp decline, and today it is largely a lost skill from a bygone era.

It hasn’t completely vanished, though. High-end specialty painters, such as those doing historic restoration or faux work, have kept on-the-job-site use of color additives alive.

For some of these artisans, using color additives to gain total control over their color palettes is indispensable. Imagine the frustration a historic restorationist might feel if he attempted to recreate the rich, dark colors of a Queen Anne Victorian façade with store-mixed colors.

For other artisans, mixing their own colors just comes naturally. “The majority of people doing faux work come from art backgrounds,” says Janie Ellis, of Anything But Plain Studio and School of Decorative Finishes in Houston, Texas. “And for most artists, they’ve never seen a color in a jar that they like. They have to doctor it.”

Messing with color additives may be more trouble than most professional painters care to bring upon themselves. But for those who take the leap, there are significant benefits.

“Custom mixing colors is part of the service we offer our clientele, and it helps to set us apart,” Ellis says. “We can mix any color they want. If they want the walls to match their rug or their drapes, we can do it.”

One risk involved in mixing your own colors is that if you don’t get it just right the first time and have to keep adding color, you can quickly wind up with more paint than you need. “If you’re not careful, you can overshoot and mix too much,” says Rod O’Neal, corporate product manager for Kelly-Moore Paint Co., which has a line of universal colors. Furthermore, O’Neal warns, if you don’t have a good eye for color, mixing your own colors can be an exercise in frustration — “And believe me, a lot of people do not have a good eye for color,” he says.

Mixol PaintsIn addition to mixing colors from scratch, color additives can also be used to tweak store-mixed colors on the job site, saving you endless runs back and forth to the paint store when finicky clients or decorators want just a tad more yellow in their burnt umber or not quite so much cream in their raw sienna. This is the most common use for color additives.

With color additives you can also get deeper, richer color than you’ll typically find at the paint store. And you can get more complex colors: blues with touches of orange and red, perhaps, or golden yellow with a hint of raw sienna.

“When you make colors more complex, they can go along with any other color inside the room,” says Dean Sickler, owner of Dundean Studios, a decorative painting school in northern New Jersey. “It’s all about nuance. It’s pretty subtle, but it’s there.”

Types of color additives
Color additives come in both liquid and powdered forms. Among liquids, there are oil-based, water-based and universal colorants available. Universals, which have an ethylene-glycol base, work with either oil- or water-based paints, and typically with glazes, varnishes, lacquers, and other coatings. Popular universal brands include ProLine Universal Colorants, Sheffield Universal Tints, Colortrend Plus universal colorants and Mixol Universal Tints.

Mixol, a German brand, is one of the premium color additives in terms of quality and price. It’s the colorant of choice for the restorationists at the Getty Museum, who keep some of the world’s greatest masterpieces in tip-top condition. It’s the choice of the furniture restorationists who did touch-ups on the desks and chairs of the U.S. Senate.
“Mixol can achieve deep, dark colors not achievable with most tints,” says JoAnne Campisi, of Sepp Leaf Products, the New York-based, U.S. distributor for Mixol.

Mixol comes in 32 colors, 15 of which are made for fast-drying varnishes, silicate and silicone resin paints and coatings. They can even be used to color concrete and mortar.
One potential pitfall in using universal colorants is oversaturation. Put in too much colorant and it will overwhelm the binder, leading to rub-off or poor adhesion.

Mixol Paint ChartsCharts are available from the manufacturers showing how much colorant to use.

Another type of color additive is the do-it-yourself concentrate type, which includes artists’ oils, Japan colors, poster paints, gauche paints, watercolors and other oil- and water-based paints. Golden Artist Colors Inc. of New York makes artists’ acrylics that are used by many specialty painters as color additives for water-based coatings. Unlike universal colorants, you don’t need to worry about oversaturation when adding paint to paint. “That’s one advantage of using fluid acrylics over universal colorants — fluid acrylic is packaged paint,” says Lori Wilson, an application specialist with Golden Artist Colors.

Some companies sell color additives in their pure, powdered form. The powders are made of mineral or metal particles and offer a variety of colors and effects, such as metallic, iridescent, pearlescent and sparkle finishes. They can be mixed with oil- or water-based coatings. They work particularly well when mixed with clear coatings, such as a clear varnish or a clear glaze. One current trend is to mix these specialty-finish powders with a clear wax, which is applied atop Venetian plaster, “to give it sparkle and a little flavor,” says Larry Neuberg, president of Gold Leaf & Metallic Powders, in California.

One note on powders: They can be hard to mix if you don’t wet them down first.
But regardless of whether you’re using powders or liquids, oil-based, water-based, or universal tints, color additives can save you trips to the paint store, pump up your color palette and help you distinguish yourself from the pack.

 
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