On a renovation we recently completed, the metal(tin) roof had a stamp on the back, the installer gave a 25 year guarantee.  The roof was a little worse for wear, but was not leaking.  The guarantee expired in 1905.

For most of us, the expected life of a metal roof is beyond our expiration date.  That is not true of most modern cedar shingle roofs which I have seen fail in less than 10 years(due to acid rain and fast […]