Recent Review: They had to level out the surface under the liner, then apply more combination surface. Installed liner. Filled pool, balanced it with chemicals and checked all pipes, motor, filter, etc. Excellent company, wrote contract with detailed step-by-step explanation of what the company would do. Excellent company, came 1 day after I called, wrote up contract, 4 or 5 days until workers came to put in liner. Finished in one day and came back next day to check all parts of pool and equipment. Would use them again and do use them for buying equipment and chemicals for the pool on an ongoing basis.