You normally don't replace a tile roof unless you get hit by a big hail storm. If these glass tiles hold up to hail better than tile then they would be good fit

You normally don't replace a tile roof unless you get hit by a big hail storm. If these glass tiles hold up to hail better than tile then they would be good fit here. Corrugated iron rusts out, but it has a pretty long lifespan. The bigger issue is in many areas you are restricted in what roof material you can use - lots of locations limit you to tiles only.