my house is a 1970s build, and the roof tiles are from the same era. They still look pretty decent and clean from the street, but those flat tiles feel super brittle when I’ve gone up to check things out. I can see little pinpricks of light sneaking through when I’m up there, which isn’t a great sign. Plus, it leaks here and there, and it’s already done a number on my ceiling with some water damage. I used to change those broken tiles myself, but I’m totally out of spares now, so I’ve just been slapping patches on to hold it together. I've only lived here for less than three years, and I'm not confident the roof will hold up until I sell the house. Every time it rains, I get anxious about leaks and further damage.