How to Spray Paint Latex

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					How to Spray Paint Latex
Latex paint is a water-based paint. The water has been mixed with various
acrylics, polymers that are used as binders. Latex paints are valued for
their washability, resistance, and adhesion. Latex paints dry very
quickly, apply in one coat, and clean up with soap and water. Latex
paints are easily applied to most surfaces with paintbrush and/or roller.
However, spray painting may be a better choice when speed, surface area,
and texture are an issue. Because it reaches crevices and corners,
applies a uniform and even coat, and applies a wetter coat that assures
better adhesion, spray painting can be the best choice. Small containers
of latex paint are readily available in aerosol spray cans, and these
work well for small items and surface areas. To tackle the bigger jobs,
you need to know the costs and challenges in how to spray paint latex.

<Steps

Use a hand-held spray-paint gun.
1Use a spray-paint gun sprayer (sometimes called a "cup gun") for small
jobs, such as furniture.<The spray-gun is a virtually self-contained
sprayer, electrical with a screw- on container for the paint.

2Prepare the surface to be sprayed by roughing the surface lightly with
sandpaper and cleaning it thoroughly after.
3Cover all furniture, carpeting, and adjacent items because spray will
drift.
4Test run the spray on a piece of wood to determine the most suitable tip
for the sprayer and the most effective stoke motion.
5Spray paint surface with lightly sweeping motions.
6Clean spray-gun by spraying a container full of lightly soaped water.

Use an airless spray gun.
1Use an airless spray gun for larger surfaces, such as indoor and outdoor
walls.
2Prime the gun, hose, and siphon tube according to sprayer instructions.
3Fill a bucket with approximately 2 gallons (7.57 L) of paint.
4Adjust the pressure, after dry-run test spray on piece of cardboard or
wood, according manufacturer's directions.Pressure is too high if the
coverage is thin or there is a lot of scatter.

5Hold sprayer tip 14 inches (35.56 cm) from the surface and sweep sprayer
in easy movements that overlap each sweep by 50%.
6Flush spray system with lightly soaped water.

Use an HVLP (High Volume Low Pressure) paint sprayer.
1Use an HVLP sprayer for surfaces where it is important to avoid
streaks.The HVLP, like the Airless Spray Gun, consists of a paint
reservoir, a hose, compressor, and gun with a variety of tips..
The high volume (HV) in the sprayer applies more paint, and it does so at
low pressure (LP), thereby, reducing overspray.

2Test sprayer on piece of wood or cardboard to practice sweeping motion
and determine most effective tip.
3Paint surface with sweeping motions that overlap last sweep by 50%.
4Clean sprayer by flushing with lightly soaped water.<
Tips
Thin latex paint according to the directions and specifications on spray
device because each type of sprayer has different requirements regarding
viscosity so as not to hamper flow.
Latex paint is water-based, so the most available thinner is water;
however, try to use distilled water because tap water has chemicals that
may adversely affect the paint.
Mix your own latex paint thinner with 50% distilled water and 50%
propylene glycol; the water will thin the paint, and the propylene glycol
will promote slow drying.
Locate paint reservoir and machinery away from spraying location, as much
as 20 feet (6.096 m) away indoors and 50 feet (15.24 m) away outdoors.
Wash all tools with lightly soaped water.
Clean up spatter and drips with lightly soaped water.
Tightly cap latex paint cans when not in use.

<Warnings
Latex is water-based, so it is not recommended for painting ferrous
metals, over wall-paper, or un-primed wood.
Wear safety equipment, including work gloves, goggles, and respirator.
Seek medical attention immediately if you accidentally inject paint into
your skin.

Things You'll Need
Safety goggles, work gloves, and respirator
Paper towels
Plastic sheeting and/or drop cloths
Paint-spray gun
Airless spray gun
HVLP spray gun
Lightly soaped water = 1 ounce (0.12 metric sup) of liquid dish soap per
gallon of water


Related wikiHows
How to Thin Latex Paint

Sources and Citations
http://homesteadfinishingproducts.com/pdf/paintspraying_ver3.pdf
http://www.easy-house-painting-tips.com/spray-painting.html
http://www.dundean.com/tips_what_is_latex_paint.shtml

				
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posted:3/6/2013
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