So I have a bit of a dilemma. We moved into our home 3 years ago. It has an in-ground indoor concrete/plaster pool . The previous owner had painted the pool with a product called Envirolon which is a synthetic rubber paint made by Kelley Technical Coatings out of Kentucky. They did a poor job of painting it as you could see all the roller marks. So I decided to re-coat the pool. I followed all the prep instructions and everything was great until the paint started to blister. I spoke with Kelley Tech and they advised me that I most likely applied the paint to to hot of conditions since it was the entire pool that blistered. So I removed all the loose paint,,,,prepped the surface and re-coated again. Again I have blisters everywhere. This time I sent a chip into Kelley Tech and they advised me to remove as much of the paint as possible cause there appears to be a chemical issue in one of the coats of paint. That each time I apply a coat of the Envirolon product it melts with the other coats and is pulling the problem into the new paint. They have been a great company to work with and are offering to send me product for free. My dilemma is I'm concerned that this is going to happen again and it is a ton of work and a lot of mess trying to get that old paint off. So I'm thinking about using their water based acrylic enamel instead of the synthetic rubber. It wont "blend" with the existing coating,,,it's alot less fussy when it comes to application conditions i.e. , temp, moisture, etc and it is a lot easier to clean up. My biggest concern is durability. Does anybody here have experience with the durability of water based acrylic pool paints?