Instead of tearing out the entire pool and starting over, A3P installed a Renolit PVC membrane — 80 mil thick and fully watertight. We replaced all the pool returns and penetrations with gasketed fittings designed for use with the membrane, making the pool look new again. The Renolit PVC membrane provides waterproofing, resists cracking and bubbling, handles freeze–thaw cycles, and delivers a durable, long-lasting finish when properly installed and maintained.