
(2026 edition)

Techniques To Avoid Errors

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Regular interior paint cracks and peels fast outside. You need flexible acrylic latex or oil-based exterior formulas that move with the wood, block UV rays, and fight mildew. Skip this and you’ll be scraping again in a year or two.
Start with a good cleaning to kill mildew and remove chalky residue. Sand rough spots lightly, fill cracks, apply a quality exterior primer, then two thin coats of 100 percent acrylic latex. It can look almost new again and last seven to twelve years with basic care.
Scrape off everything loose, sand the edges smooth, wash with a mildew-killing cleaner, let it dry completely, prime bare wood, then apply flexible exterior paint in thin coats. Catching it early stops water from getting underneath and causing rot.
Yes for big areas like decks or long siding runs. A good airless or HVLP sprayer cuts time and gives even coverage. Back-brush siding right after spraying so paint works into the grain. Brush and roller still work fine for smaller jobs or tight spots.
100 percent acrylic latex in satin or semi-gloss. It flexes with the wood, cleans up with soap and water, resists fading, and fights mildew. Low-VOC versions keep the air cleaner. Flat paint chalks and shows dirt too quickly outside.
With solid prep and quality exterior paint, seven to twelve years is realistic in most climates. High-exposure spots or harsh weather may need touch-ups sooner. A soft wash and quick touch-up every couple of years stretches it further.