Around here (Norway) a lot of houses have shingles on the roof - typical lifespan ~20 years or so. On the upside, it is simple to replace.
Next step up being corrugated steel, though mostly it is shaped to look like tile. IIRC you can expect to get 30-40 years out of one.
Proper tile - lifespan depends greatly on the quality of the tile, but around here (west coast, lots of crap weather) the limiting factor tends to be the nails used to hold the tiles in place.
Anecdotally, my father in law and I redid a slate roof last laid in 1917 last year. The nails had all but rusted away, and only the sheer mass of the slates held them in place. We redid it using marine grade stainless screws, part of me is a little peeved that I won't ever know how long it lasts - but I fully expect it to last way more than 100 years. Was fun to etch a couple of small plaques for my far-off descendants to read, though. We put them under the first couple of slates you'd need to remove when redoing the roof. :-)
Around here (Norway) a lot of houses have shingles on the roof - typical lifespan ~20 years or so. On the upside, it is simple to replace.
Next step up being corrugated steel, though mostly it is shaped to look like tile. IIRC you can expect to get 30-40 years out of one.
Proper tile - lifespan depends greatly on the quality of the tile, but around here (west coast, lots of crap weather) the limiting factor tends to be the nails used to hold the tiles in place.
Anecdotally, my father in law and I redid a slate roof last laid in 1917 last year. The nails had all but rusted away, and only the sheer mass of the slates held them in place. We redid it using marine grade stainless screws, part of me is a little peeved that I won't ever know how long it lasts - but I fully expect it to last way more than 100 years. Was fun to etch a couple of small plaques for my far-off descendants to read, though. We put them under the first couple of slates you'd need to remove when redoing the roof. :-)