Pinholes in the coating appear as small blisters or bubbles. After the blisters pop, they leave a round crater and the pinhole can be seen through the transparent film.
Outgassing: Air escapes from the porous substrate and becomes trapped in the coating.
Temperature/Humidity: If too hot or humid, it can result in rapid drying that cause’s air entrapment in the coating.
Mixing: Mixing at too high of a speed entraps air, resulting in bubbles.
Surface Prep: Extreme/aggressive shot blasting opens the pores in the concrete causing air to be trapped when the coating is applied resulting in bubbles
Roller covers: Not using the proper nap recommended. Woven, Shed-Resistant, rollers are recommended.
• Sand the problem areas dull. Vacuum dust and debris.
• Fill large craters with epoxy patching material.
• Sand patched areas and vacuum.
• Reapply coating at recommended rate and follow directions.
Outgassing: Use a primer on all porous concrete. Follow directions for mixing and using primer. Spike rollers can be used if bubbles appear but may not completely remove them.
Air Movement: Eliminate any source of direct air blowing onto the surface.
Temperature and Humidity: Follow all direction to insure you are within the products recommended ranges.
Sunlight: Avoid direct sunlight when applying.
Mixing: Always use a jiffy mixer and medium to slow speeds. If air bubbles are present in coating, allow to sit briefly before pouring on the floor.
Roller Covers: Always follow recommended nap and type of cover. Woven, Shed-Resistant, rollers are recommended.
Surface Prep: Avoid aggressive shot blasting.