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Duron Paints & Wallcoverings: Washing and Maintenance Procedures of Duron
Washing and Maintenance Procedures of Duron Paints
Interior Conventional Paints
In general, as the coating increases in gloss, that is, from a flat to a semi-gloss, the washability of the
paint increases. Further, oil based paints are typically more washable and durable than their latex
counterparts. Hence, an oil base semi-gloss is more washable than a latex semi-gloss. Learn more...
When washing a latex flat paint, lukewarm water with a mild detergent should be used in conjunction
with a sponge. Latex flats should be gently washed as too much pressure will actually polish the paint
and unsightly glossy spots will result. This phenomenon is referred to as "burnishing" and is
especially apparent in darker color latex flats. The washing procedures for the semi-gloss latex paints
is essentially similar to the latex flats except the semi-gloss latex paints can be washed with a greater
degree of pressure before burnishing. Hot water and strong or abrasive detergents should be avoided
in washing latex coatings. When washing oil base semi-gloss coatings, abrasives and strong
detergents should be avoided, although one can successfully use hot water and mild detergents that
do not contain ammonia. The oil base semi-gloss coatings have yet an even higher degree of
resistance to pressure when washing.
Finally, all latex coatings should be allowed to cure for at least thirty days, and oil base coatings
allowed to cure for a minimum of seven days, before any type of washing is attempted.
Exterior Paints and Stains
The service life of exterior paint or stain depends on proper application per the product’s label instructions, the total number of coats applied, and the type and condition of the substrate it is applied to. As an example, according to the *U.S. Forest Products Society,
one coat of a latex paint primer and one coat of an acrylic latex paint applied over uncoated smooth plywood can be expected to last 3 to 4 years. Applying a second top-coat (making a three-coat job) will approximately double the (service)
life. Learn more...
Other than occasionally cleaning properly applied paint or stain on vertical
(non-floor) surfaces, other maintenance is usually not required. Mildew, pollen and dusts can be removed by using **a solution of one cup of a detergent that does not contain ammonia, 1 quart of household bleach, and 3 quarts of warm water. Pre-wet the surface with clear water, apply the solution, allow it to stay on the surface for approximately 10 minutes, then rinse thoroughly with clean water. Deck (horizontal) surfaces coated with paint, sealers with colorant (known as toners), or with semi-transparent or opaque stain, can be cleaned with the same detergent/bleach solution to remove mildew, other surface contaminants, and (as well as) chalk, that is, a powder residue that occurs as the paint or stain film weathers. **Wear protective glasses or goggles and waterproof gloves when using this solution. Quickly wash off this solution if it touches your skin.
IMPORTANT!! Before using the bleach solution above, apply it only to a very small inconspicuous area (less than a square foot) to determine if, after cleaning, the color will remain stable. With some colors of paint or stain, a solution containing bleach can cause a severe and irreversible color change.
If and when there is significant fading, discoloration of the paint or stain film from chalking, erosion of the coating film where the bare substrate beneath it can be seen or is exposed, or chalk staining occurs on brick, glass, trim, or other surfaces below the painted surface, then the painted surface should be cleaned and recoated.
*Reference: Finishes for Exterior Wood, Forest Products Society, authors R. Sam Williams, Mark T. Knaebe and William C. Feist, 1996, page 46.
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