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EXTERIOR PAINTING: PAINT QUALITY
Consumer magazines and television
programs regularly test exterior paints.
While these tests conducted can be informative and useful,
the procedures for testing paints and other coatings cannot
be accepted as the definitive statement on paint quality. Many
factors must be considered when judging the quality of a
particular paint.
For example,
exterior surfaces in Houston are subjected to considerably
different conditions than those experienced in northern
climates. High temperatures and humidity, and mildew growth,
are two factors more prevalent in southern climates. An alkyd
paint may perform well in a northern climate, but will develop
cracks and foster mildew growth in Houston.
A number of
paint manufacturers have developed a reputation for
producing superior products, and the cost of their products
reflects this reputation. At times, this reputation has been aided
by articles and reports.
The durability of a
paint is primarily determined by the type and amount of resin
it contains. For most exterior applications, a 100% acrylic
resin is recommended. An examination of the product data
sheets of the highest quality paints made by leading
manufacturers reveals that each contains approximately the
same quantity of acrylic resin.
By this standard, there
is little difference between these paints. Our experience
confirms that these products perform equally well.
Proper surface
preparation and application of the product according to the
manufacturer's specifications are as important as the quality
of the paint.
The adage
'you get what you pay for' is not always true. Sometimes,
savvy marketing can create an image of quality which doesn't
actually exist. In the case of paint, the contents of the can
are more important than the quality of the label.
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Stains
While paint can be applied to virtually any surface, paint is not
always the most appropriate or durable coating. This is particularly
true of walking surfaces, such as patios, sidewalks, and decks.
Paint is a film-forming coating, that is, it forms a continuous film
that lies on top of the surface. On a horizontal surface, standing
water can soften the paint film and leave it prone to marring and
abrasions from foot traffic. Moisture can then enter the substrate,
leading to further peeling.
Because stains penetrate the surface they are not prone to such damage.
Generally, stains are the product of choice for walking surfaces.
Unfortunately
stains are usually not as durable as paints. Ultraviolet light breaks
down the pigment in stains, which results in more frequent
reapplication. In addition, embedded dirt and debris can
discolor the surface. While pressure washing will remove
much of this dirt and debris, it can also remove some of the
stain, resulting in an uneven appearance.
Both stains and paints can enhance a surface. Understanding the
benefits and limitations of each will help you select the most
appropriate coating for your home.
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Philpaint provides professional interior and exterior painting services throughout Southwest Houston, including the following communities: Bellaire, West University, Rice Village, Southampton, Montrose, The Heights, Braeswood, Meyerland, Tanglewood, River Oaks, Sharpstown, and surrounding areas.
© Philpaint
Incorporated 2006 All rights reserved. |
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