Many homeowners are planning spring improvement projects and
often at the top of the list is exterior painting. Debbie Zimmer
with the Rohm and Haas Paint Quality Institute states, �To achieve
picture perfect results from your exterior paint job, follow these
four simple and economical steps.�
1. Prepare the Surface.
Before you begin painting, make sure the surface is clean and
sound. Even the best quality paints will fail if they are applied
to a poorly prepared surface. First, remove any mildew with a
solution of one part bleach to three parts water then rinse with
clean water. Wear eye and skin protection, and protect nearby
plantings.
Next, make sure the surface is free of any loose, flaking or
peeling paint. This may require scraping and sanding. Also, sand
any glossy areas to dull them. Power wash the entire surface to
remove dirt and chalk, rinse with clean water.
Finally, prime any bare areas with a top quality exterior
primer.
2. Use the Right Tools and Brushes.
Good quality rollers and brushes last longer and help a job move
along more quickly. They also apply the paint more heavily and
smoothly, which helps with long-term durability. Choose brushes
that are well balanced, and have tightly packed bristles that are
tapered up to the center of the brush.
3. Paint in the Right Weather Conditions.
Ideally, you should paint when the temperature is between 60-85
degrees F, and when there is little or no wind. Avoid painting in
direct sunshine, as this can cause the paint to dry too quickly and
even to blister. In addition, if the temperature is predicted to
drop below the paint manufacturer�s recommendation for minimum
application temperature in the next day or two, you might want to
consider postponing your project.
4. Use the Right Paint for the Job.
Choose a paint that is designed for the job you�re doing. In
most cases, a 100% acrylic latex paint will be the best choice.
These paints adhere better, are more flexible, and last longer than
ordinary paints. Using a lower quality paint just to save a few
dollars will end up costing you more in the long run, as you will
have to repaint much sooner than if you used a top quality
product.
One very important thing to remember is never to use an interior
paint for an exterior job. Manufacturers formulate paints for use
either inside or out. Paints contain specific ingredients that all
play a role in the durability and final appearance. These
ingredients include pigments, binders, additives and the carrier or
liquid portion.
The pigments provide the whiteness, darkness and color to
the paint or other coating. In addition, they impart the opacity
and hiding power required. Pigments are dry powders (not dyes);
liquid colorants used in the stores contain pigment powders
dispersed in a liquid.
The binder is the component that �binds�, or ties
together the particles of pigment, hopefully in a tough, durable
film. The binder also provides the adhesion of the film, and
influences almost all paint properties. Generally, the binder alone
dries to a clear, glossy usually colorless film.
Additives are low-level ingredients included in the paint
formulation, and put in the product in the factory, not point of
sale additives that are purchased in the paint store, home center
or other outlets. These affect certain properties such as thickness
of the paint, mildew resistance and bubble breaking.
The liquid proportion is water and affects how heavily
the paint will tend to apply, and how thick the paint film will be
when it dries. This is an important aspect of the overall quality
of the product.
How thick the dry film is will affect many of the paints
durability and appearance properties including:
- crack resistance
- hiding
- sheen uniformity
- ease of touch-up
- mildew resistance
Finally, it is important to apply the paint at its recommended
spread rate; and not to thin the paint with additional liquid
because this reduces the solids content and can compromise quality
and performance.
So, when tackling your next exterior paint project, follow these
steps and you�ll achieve that long-lasting and attractive paint job
you planned.
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About the Rohm and Haas Paint Quality Institute
The Paint Quality Institute (SM) was formed by Rohm and Haas
Company in 1989 to educate people on the advantages of using
quality interior and exterior paints and coatings. The Paint
Quality Institute's goal is to provide information on the virtues
of quality paint as well as color trends and decorating with paint
through a variety of vehicles, including television appearances,
newspaper and magazine articles, and instructional literature. Be
sure to visit the Paint Quality Institute at
www.paintquality.com.
About Rohm and Haas Company
Leading the way since 1909, Rohm and Haas is a global pioneer in
the creation and development of innovative technologies and
solutions for the specialty materials industry. The company�s
technologies are found in a wide range of industries including:
Building and Construction, Electronics and Electronic Devices,
Household Goods and Personal Care, Packaging and Paper,
Transportation, Pharmaceutical and Medical, Water, Food and Food
Related, and Industrial Process. Innovative Rohm and Haas
technologies and solutions help to improve life every day, around
the world. Based in Philadelphia, PA, the company generated annual
sales of approximately $8.9 billion in 2007. Visit www.rohmhaas.com
for more information. imagine the possibilities�
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