Wood
Siding
and Trim/Painted/Flaking or Peeling/To Be Painted
a. Surface
Preparation:
NOTE‚
If lead is suspected in the paint, do not attempt to scrape, sand, power wash,
use heat gun, etc., which might put lead into the environment, but rather contact
a contractor qualified for lead assessment and abatement
- remove all loose or poorly
adhering paint by scraping, or by careful hand wire brushing using a stiff
metal wire brush going with the grain of the wood; wear eye protection, work
gloves and a dust mask
- for wood shakes, use
hand wire brushing with vertical strokes; note that with a steel wire brush
on cedar, all bits of steel wire must be removed or discoloration can result
- feather sand rough edges
of remaining paint; refresh surface of exposed, weathered wood by sanding
with medium grit (#120) garnet paper; if gloss or semigloss paint will be
used, follow by sanding with fine grit (#220) garnet paper; wear eye protection,
work gloves and a dust mask
- dull any glossy paint
by sanding with fine (#220) grit garnet paper; wear eye protection, dust mask
and work gloves
- treat any mildew with
a 3:1 water:household bleach mixture, leaving it on for 20 minutes and adding
more as it dries; wear eye and skin protection; rinse thoroughly
- remove dirt, chalk, dust,
residual particles of paint, treated mildew, etc. by scrubbing with detergent
and water, rinse thoroughly
b. Priming:
- prime areas where old
paint has come off
- for best results, prime
entire job
- use quality exterior
stain blocking latex or oil-based wood primer
- do not leave a primer
unpainted
c. Painting:
- use top-of-the-line exterior
100% acrylic latex house paint in flat, satin, semigloss or gloss finish,
depending on appearance desired
- a flat finish will provide
a more uniform appearance; quality satin and semigloss finishes will resist
mildew more than a flat
- use quality oil-based
primer and paint if surface has build-up of old oil-based paint
- do not apply oil-based
paint over latex paint
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