Metal roofing is a life time roof. We use quadra-loc plus, class 4 ul 2218 -impact resistance. We have 18 vibrant colors 29 and 26 gauge.Valspar'WeatherX Galvalume Finish.40 yr. warranty. We stand behind our workmanship. We take no short cuts. We take out sags and humps to make your roof new and straight. Check us out on BBB.