Thirteen hundred years ago, the capital of the Shilla Kingdom was Gyeongju, and it was admired because all the houses and temples had tile rooves and not a bit of thatch was in sight. You can still see many tiled rooves in Gyeongju thanks to government grants and money from tourism.
These houses are next to the council office in my Sokcho neighbourhood. The tiles look good if you squint, but they are made of plastic or some similar material and come in sheets rather than individual pieces. Real clay tiles are too expensive for the average Joe/Kim to afford, but I'm not sure plastic tiles are more attractive than thatch or asphalt shingles. On the other hand, at least it looks traditional.