MIL-HDBK-1110
A paint roller consists of a cylindrical sleeve or
cover which slips onto a rotatable cage to which a handle is
attached. The covers vary in length from 1 to 18 inches and the
diameter from 1.5 to 2.25 inches. A 9-inch length, 1.5-inch
diameter roller, is common. The covers are usually made of
lamb's wool, mohair, or synthetic fibers. The nap (length of
fiber) can vary from 0.25 to 1.25 inches. Longer fibers hold
more paint but do not give as smooth a finish. Thus, they are
used on rougher surfaces and chain link fence, while the shorter
fibers are used on smooth surfaces. Use of extension handles
makes the application of paint to higher surfaces easier.
However, use of a long extension handle usually results in a less
uniform film. Use a natural fiber roller (for example, wool-
mohair) for solvent base paints and a synthetic fiber roller for
latex paints.
7.5.3.1
Procedures for Roller Application. Rollers are used
with a tray which holds the coating or a grid placed in a 5-
gallon can (Figure 9). Application procedure is described below.
Figure 9
Equipment Used in Applying Paint by Roller
a) If a tray is being used, fill it half full with
premixed paint. If a grid or screen is being used, place it at
an angle in the can containing premixed paint.
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