Polyaspartic clear coat on pebble epoxy patio problem

[trsjules]

Hello, this is a bit off topic but I'm hoping someone can give me some advice please. I have a large patio covered in a pebble epoxy surface (think Rice Krispy treat texture) . It is/was beautiful, but requires a clear coat every couple of years to keep it colorful and shiny. This year, I hired a local guy who does garage floors to come out and put a polyaspartic top coat on my patio, in the hopes it will last for several years. Unfortunately, he did not back roll it sufficiently, and left several milky, bubbly puddles. Even a perfectly round five gallon bucket puddle! He refuses to rectify the situation. I'll deal with him later, but in the mean time, it looks TERRIBLE in those areas. The puddles are completely level with the pebbles, leaving none of the nooks and cranny texture the rest of the patio has, and it's whitish, not clear. Way too thick.

So, short story long, I need to remove the extra coating and get it back to the pebble texture, then recoat. I've tried: Wire brush, and sand blasting with aluminum oxide and sand. Not much improvement at all. Does anyone know of a solvent that will soften the polyaspartic coating so I can remove it and recoat the puddle spots? Or a better idea? I can't really sand it or grind it because of the texture.... please help if you can. Thanks!! ~Julie

 

[LegacyIndustrial]

That looks like bubbling from moisture. Adding a tight molecular-lock sealer to an outdoor patio without a proper moisture barrier in place will more than likely cause you further issues. These types of outdoor applications should be sealed with a breathable acrylic that naturally wears away over time. Once the sealer has worn away you simply recoat and repeat as time goes by.

When that sealer you have finally bites the dust, it will take a stick of dynamite to remove it.
In regards to your question... pap can only be removed by mechanical means (diamond-grinding).