| Before
painting, remove any surface oxidation with power brush, steel
wool or fine sandpaper. If
bare aluminum is exposed, the area should be spot-primed with
a top quality exterior metal primer before painting.
Glossier
surfaces tend to highlight surface imperfections. So, if dents
are present on the siding surface, use flat paints rather
than sheen or semigloss paints.
The
Paint Quality Institute recommends using top quality 100 percent
acrylic latex paint for its excellent adhesion and outstanding
resistance to chalking and fading. |
Do
not wire-brush or sand panels in preparation for painting, as
this could permanently mark and mar their surface.
Paint
with a color no darker than the original color of the siding.
Dark colors tend to absorb the sun's heat, which can cause
panels to warp and buckle irreversibly.
Paint
experts agree that quality acrylic latex paint is the best
kind to use because its greater flexibility allows it to expand
and contract with the siding when temperature changes occur.
|
Allow
fresh stucco to cure at least four weeks before painting to
allow for shrinkage and reduction in surface alkalinity.
Before
painting aged masonry, remove any efflorescence by power washing,
wire brushing, scraping or sandblasting. In extreme cases,
I scrub with a 6% to 10% muriatic acid solution; rinse thoroughly.
Coat
unpainted masonry with a quality latex- or solvent-based sealer
to fill in surface pores. This will provide a smooth, uniform
surface on which to begin painting, according to the Paint
Quality Institute. Rough surfaces, like cinder block, can
be smoothed by application of a block filler prior to painting.
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