Troubleshooting Guide

TB35
The most important part of the system is the spray tip.
UNDERSTANDING AIRLESS TIPS
Airless spray tips are a key component to the successful
operation of an airless spray system. They define the spray
pattern, control the flow of the coating being sprayed and
ultimately tell the pump how hard it must work. A proper
understanding of airless tips is critical to the success or failure of
any airless application.
Airless Spray Tip Characteristics
It is important to remember that the orifice size, in conjunction
with the fan width size, determines the spray characteristics
of the tip.
Examples: As the orifice size increases, while maintaining the
same fan width size, the greater the volume of coating will be
applied to the same area.
FAN WIDTH -10" (25 cm)
Tip Size: 517 521 526
Conversely, the larger the fan width size, while maintaining the
same orifice size, will result in the same amount of material being
applied over a greater surface area.
ORIFICE SIZE -.017
Tip Size: 417 617 817
TIP WEAR
When beginning a project, choosing the right tip size and fan
width will determine how profitable you will be through both
coating consumption and production time. If the tip size being
used is wrong – by either choice or through wear – mil
thickness will be too heavy and the finish will be unprofessional.
The spray pattern chart below demonstrates what happens as a
tip wears. As wear occurs, the pattern size decreases and the
orifice size increases. You will find that you have to make more
passes to cover the same area. There is no standard rate of tip
wear due to the variation of the abrasiveness of all coatings.
Replace your tips after 30-50 gallons (113-189 liters), it's one of
the most profitable things you can do.
New Old
In the case of applying RedGard
®
, it is recommended to use a tip
sized at 425 to 431. The use of any smaller orifice will result in the
material being atomized too much, or the tip will clog as a result
of the material being heavy bodied and high solids.
REDGARD
®
WATERPROOFING AND CRACK PREVENTION
MEMBRANE SPRAY APPLICATION SPECIFICATIONS
Technical Services 800-282-8786
custombuildingproducts.com
Technical Bulletin