ACRYLIC COATING APPLICATION
AND EQUIPMENT GUIDELINES
The following guidelines are baselines for choosing the proper equipment and settings for the application of
PERMAX 108, 110, 120, and 115 SERIES acrylic protective coating systems. (Some of the above referenced
coating systems are formulated in “fast-set and “instant-set” versions; contact RTC for specific application
requirements.) Acrylic coatings will freeze; protect from freezing and do not apply if nighttime temperatures are
expected to go below 32°F.
It is a requirement to dispense these coatings with enough pressure to provide an adequate supply of material
and a consistent spray pattern. Hose length of 300’ can be used with ½-inch H.P. hose. During the winter
months coating stored out doors (do not freeze) will require more pressure to atomize.
5-35 to 7-37
5-43 to 7-45
King Duraflo 56:1
5-45 to 7-50
* Coating pumps may be air-driven or gas operated hydraulic
** Reverse-A-Clean tip holders are recommended such as Graco Rac IV
It is recommended to pressure feed the coating pump with a 5:1 feeder pump as siphon tubes can cause
cavitations with cold material.
• CAUTION: DO NOT EXCEED THE PRESSURE RATINGS OF THE HOSE AND/OR GUN
APPLICATION RATES and CURE TIME
Cure time is dependent upon application rate, substrate temperature, humidity, wind chill, and due point.
Generally with acrylic coatings thinner applications with successive coats are preferred. Application rates for
base coats and intermediate coats range from 1.0 to 1.5 gallons per 100 sq. ft. Topcoat applications with granule
surfacing require a minimum of 1.5 to 2.0 gallons per 100 sq. ft. Cool temperatures and wind chill will prolong the
cure times. Acrylic coatings can wash off if they do not skin before heavy dew or rain. Excessive thickness can
cause “mud-cracking” and