Oil Based Paint for Trim Vs. Latex
Latex paints are usually the preferred coating for most every type of trim. However, not all latex paints are the same, and specific types of latex paint are more appropriate than others depending on the location of the trim. If trim is in an area where it is subject to a large amount of duress, such as along baseboards, it may require an oil-based enamel paint. You should know the appropriate coating for your trim, or you may end up with eventual paint failure.
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Preparation
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Neither latex nor oil-based paint will stick to trim unless the trim is properly prepared. You should sand vinyl, plastic, fiberglass and previously painted trim to promote adhesion. Also, prime bare wood, vinyl, plastic and fiberglass trim. Pair oil-based primers with oil-based paints, and water-based latex primers with latex paints. Coat metallic trim with a galvanized metal etching primer.
Interior Trim
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Trim on the inside of a building is best suited for latex paint. Gloss or semi-gloss latex paint is usually preferred because it provides an attractive sheen that makes the trim stand out from the rest of the wall. In addition, gloss latex paints offer more durability than paints with satin and flat sheens. Stained trim will not accept water-based latex paint and requires an oil-based paint.
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Exterior Trim
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Trim on the outside of a building requires an acrylic latex paint. Acrylic latex paints provide more elasticity than ordinary latex paints, and allow the paint to expand and contract according to varying temperatures.
Rusted Trim
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Because rusted metal trim requires an oil-based iron oxide primer to seal the rust and prevent recurrence, it must be painted with an oil-based paint. Latex paints are not compatible with oil-based primers and will peel if applied directly over them.
High-Traffic Areas
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Baseboard trim is subject to a large amount of duress: scuffs and pet damage, for example. If you need to paint trim that will be exposed to nicks and other damage, choose an oil-based enamel. This will provide excellent durability and prevent you from having to refinish the trim repeatedly.
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Resources
- Photo Credit sandpapier image by Thomas Aumann from Fotolia.com
