INSTRUCTIONS FOR ROOF COATING
- Thoroughly clean test area.
- Power-washing is preferred.
- Begin at the lowest point of the test area, power-wash toward the highest point of the test area (bottom to top).
- Once at the highest point, rinse with clean water to remove all residues from the test surface (top to bottom).
- If you are unable to power-wash the area, use a Scotch Brite pad to scrub the surface prior to the rinsing process.
- Allow the test area to dry thoroughly.
- Apply approximately 32 wet mils (2 gallons per 100 sq. ft.) of coating onto the clean, dry substrate.
- In three separate areas, embed three cloth strips (1 inch wide by 6 inches long) into the wet coating.
- Allow 2 inches of the fabric to overhang out of the wet coating.
- When the cloth strip placement is finished, apply enough coating to the topside to wet-out the topside of the cloth.
- Brush the coating lightly to ensure no air bubbles are entrapped.
- Leave the 2 inches protruding end of fabric uncoated.
- Allow the test areas to cure for 1- 2 weeks before checking adhesion.
- Adhesion and curing time frame depends on climate conditions (temperature, humidity, etc.).
- If an early test fails, wait the full two weeks to ensure coating has time to cure enough to give true adhesion results.
- When checking adhesion, pull the strip straight up.
- There must be a minimum of two pounds of "pull strength" for the coating adhesion to be considered acceptable.
- If little to no effort is needed when peeling the strip, it is doubtful that the chosen application is adhering properly.
- If lifting the fabric is difficult, or the fabric is separating from the new coating, odds are there is acceptable adhesion.
- Please consult American WeatherStar technical department with all test results.
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