One Star isn’t even warranted but that’s the least I could list. We hired Mark to do a coating job over a year ago. The job leaked from day one. He has attempted to patch but has failed on every attempt. The building is still leaking, items inside are damaged and they refuse to correct the issue. We have invested over $ 15,000.00 with Werner General Contracting and the job leaks as much as it did before they started. We were told that we will NOT receive a refund. Do NOT trust this company!!!