As a general rule of thumb, an exterior paint job should last 6-8 years without much problem if the surfaces have been
properly prepared before painting. There are many variables to consider
such as weather, location etc.and some work may in fact last longer, but
it has been my experience that a good paint job should be revisited
during this time frame. I drive past a home that I painted in 2001 that
still looks good, but I have also seen a couple from that time frame
that need a paint job immediately! It is most important that the
surfaces be properly prepared--cleaned,caulked,dry surfaces give the
best adhesion. If the paint closest to the substrate is chalky or dirty
the new paint will not bond correctly. If the underneath is no
good----the most expensive topcoat in the world will have a short life
span. The best products last longer. You
should insist always on 100% acrylic or elastomeric paints for exterior. These paints have an elastic quality that allows movement over a wide range of temperature changes. It
is also worth noting that the temp should not exceed 90 in the sun
drenched areas or fall under 35 for 12 hrs after application. All paints
have to cure and this can take hours beyond the dry to the touch time.
Paint that cures incorrectly will have a shorter life span. It is
true that darker colors fade or begin to fail before lighter colors.
They absorb more of the u.v from the sun. The sun is always the chief
enemy to paint. When choosing a darker color exterior paint I would suggest a satin sheen as opposed to a flat. This seems to hold
up better and stay cleaner. I would also suggest using the top of the
line paints for this application. You will notice fading much sooner
than the lighter colors, but mostly in the sun drenched areas. I would
suggest inspecting these
areas each year and repainting when faded. Maybe every 3-5 yrs.
depending on color. Probably the best way to keep your exterior
weather resistant is to walk around it every spring and look
specifically for these common problems and address them as they appear:
When
paint has failed, it will appear faded and feel chalky to the touch.
Failed paint allows moisture in and will eventually deteriorate the
substrate and possibly let water inside the structure if not addressed. Have other questions or concerns? We'd love to help. |
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