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Paint coverage

Posted by Steve on June 22nd, 1998 12:51 PM
In reply to footage to gallon ratio by Saibh on June 22nd, 1998 09:34 AM [Go to top of thread]

This is off the site:

For any paint, interior or exterior, the
recommended spread rate on the label is
usually about 400 sq. ft. per gallon when
recoating. This is true whether you are
painting exterior (smooth) siding or interior
plaster or wallboard. Although it is often
possible to roll paint out with a roller,
covering perhaps as much as 600 sq. ft. per
gallon, it is important to note here that you
should try to apply the paint at the rate
recommended by the manufacturer. Meeting
the intended application or spread rate is
critical for proper coverage or "hide" over old
paint colors, and to get a paint film thickness that will stand up to future washing.
One can hardly blame the manufacturer if the paint doesn't cover old colors, or if it
scrubs off with the first washing, if you make the paint coat thinner than

Especially if you are having colors custom-mixed, it is important to have enough
paint to finish the entire job, or at least enough to finish one entire side of the
house (if painting the exterior) or to paint an entire room (if painting on the interior.)
The problem is that slight color variations may result in mixing. If you stop painting
in mid-wall, then begin with a new can of paint, you may get a color shift that will
be very noticeable. Try to estimate the job so that you buy enough paint before
starting the job.

If you are estimating the amount of area to be painted, measure the length by the
height of the walls. Next, measure and subtract out any doors or large windows. If
you will be painting the trim around the base, doors, and windows with the same
paint you are using for walls, do not subtract the footage of the room openings,
because it will take about the same amount of paint to paint the trim and/or
window frame and doors as it would take to paint solid walls with no openings.

Trim paint is less critical. Because it is applied over a smaller area, or a series of
areas such as multiple windows, you will not notice a color shift from one area to
the next. Try to estimate the paint needed as closely as possible, but you can
always return for another quart if needed.

An exciting development that is becoming increasingly available is a color
computer that will let you plug in a photo of your own house and use computer
colorization to see how it would look in any given color. It is difficult for many of us
to visualize a color sample on an entire house: color selection by computer lets
you actually see the house in the color you're considering before you actually
paint the house.

written by Gary Branson

Reprinted with permission. Copyright HouseNet, Inc.

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