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Exterior
painting Optimal
weather conditions
Paint in fair, dry weather with temperatures between 50 and 90
degrees Fahrenheit. Wait until the morning dew has evaporated
and stop painting before evening dampness sets in. Don't paint
when it’s windy or dusty, particularly if you're using a
slow-drying, solvent-based paint.
Preparing the surface
Prepare the surface properly before you paint. Wood surfaces
must be clean, dry and in good condition. Repair any damaged
boards, trim or shingles and fix any structural damage.
Next:
- remove dirt and all loose, peeling or blistering paint
with a stiff wire brush or paint scraper.
- remove severely damaged paint down to the bare wood.
- wash greasy or very dirty wood with a mild detergent, hose
it off and let the wood dry before painting.
- apply a water repellent if moisture is causing paint
damage, prime with an oil-based prime coat and cover with
two coats of high-quality paint.
- apply a clear waterproofing sealer to the ends of all wood
boards to prevent water penetration and brush a prime coat
on bare or new wood. Where heat and humidity cause wood to
deteriorate quickly, treat boards with a wood preservative
before sealing.
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