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my brothers has been on 15 years never a problem my nephew but a metal roof on new construction but even that has a water biear underneath...... it's the best roof in the snow belt you can put on ...coo coo your in mexico all the time i'll take ya over and you can check them out .... I am 100% sure you will be putting one up
Hey Trap, I'm with you on this...I put the metal roof on over my old shingle roof over 10 years ago...no leaks, no problems at all.