SPRAYER SPECIFICATIONS AND
Suggested Spray Systems
For roof areas up to 3000 sq ft: Graco GMAX II 7900 or Titan Speeflow 6900 or similar.
For roof areas
over 3000 sq ft: Graco GH 833 or similar.
Minimum Gallons per Minute: 2 gallons for DURA 500
Minimum Working Pressure: 3,000 psi
Reversible Tip Sizes: .035, Fan Width: 12 to 14" (Graco #635)
Recommended Hose Length: 250' - 400' maximum (pump dependent)
Recommended Hose: ½” diameter for 200’ or less in length, ¾” diameter over 200’ in length
The use of an airless sprayer system with Dura 500 coating saves time and labour.
It allows for easier application over uneven surfaces and provides uniform mil thickness. The airless sprayer system also enables the product to be applied at an average of two to six gallons per minute, depending on equipment specification.
DURA 500 coating, it is
important to do a complete site assessment, checking proximity of any
such as vehicles, other buildings, etc., that may come in contact with
during the spray process. Extinguish all ignition sources. Do not allow
smoking on or near the jobsite.
If possible, try to leave spray equipment on the ground. This will reduce the risk of roof overload. The sprayer should be set up on a level surface with good access to roof and coating supply.
To allow for maximum safety and efficiency, use three persons for the spray process (one for spraying, one for guiding the hose, and one on the ground to feed the spray equipment).
When spraying DURA 500 coating, hold gun perpendicular to roof surface, approximately 12"-14" away. Move gun at a correct, even speed, overlapping each stroke approximately 50% to obtain a smooth, uniform product thickness (“wet on wet” spraying). When spraying built up roofing surfaces with gravel embedded in the asphalt, make sure all sides of the gravel receive coating. Gravel will have a shadowing effect if sprayed from one angle only, and voids will result in the membrane.
All terminations of DURA 500 such as on ductwork, air conditioning units, etc., must be squared-off and neat to maintain good aesthetic value.