The number of coats you should apply depends on the type of
paint, the colour, the nature of the colour you are applying, method of
application and the nature of the surface.
Steps Required
i.
Get a measuring tape and Measure out the
perimeter of the room. e.g. you measure out the entire length of the four sides
of the room or as the case may be (The horizontal measurement).
ii.
Then measure out the height of the room, the
length from floor to the Ceiling. These could be in meters or in feet as
desired (The vertical measurement)
iii.
Now calculate the surface area of the room which
is simply by multiplying the total length of the room (The horizontal
measurement) by the ceiling height (The vertical measurement) but deducting the
dimensions of windows and doors opening or as the case may be .standard Nigerian
room, is usually 3.6m x3.6m or 12ft x12ft, 3.6m x3.0m or 12ft x 10ft depending on
the design plan of the house.
iv.
After this measure out the openings in the room,
most often the windows and doors. For windows it may be 1.2m x 1.2m (4ft x 4ft)
or 1.8m x 1.2m (6ft x 4ft).
The height of windows is mostly 1.2m or 4ft
while the length is what usually varies. Multiply the height by the length of
all the windows and then do same for doors. For doors the height is usually
2.1m or 7ft and the length is 0.9m or 900mm or 3ft do multiply the height by
the length and sum the total areas of openings in the room then subtract from
the total surface area of the room.
v.
After determining your area (square feet or m2)
then choose your paint check the label of the paint bucket for the spread rate
for the paint. Spread rate is just the number of square feet (m2)of surface
each coat of paint will cover .After finding out, divide the total surface area
you measured earlier by this number to determine the number of paint bucket/liter
you will need for each coat. The number of coats you should apply depends on
the type of paint, the colour, the nature of the colour you are applying,
method of application and the nature of the surface.
vi.
Lastly you will likely need a second coat of
paint when covering a dark color with a lighter one. Also, certain surfaces,
like exterior masonry, are very porous and absorb a great deal of paint. In
such cases, a second coat is often needed to give the paint a uniform
appearance. Using a brush will put on a heavier, better-hiding coat than roller
application.
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