Roofs don’t last forever. Waterproofing layers age, crack, and slowly fail. If nobody has touched the roof for 10–15 years, the chances of leaks, seepage, and expensive repairs go up.
By asking, “Pichli baar full waterproofing kab hua tha?” you get a sense of where you are in that cycle. If it was done recently and properly, you’re probably safe for a while. If no one remembers, or it’s been very long, you can mentally prepare for either leaks or a future cost-sharing situation.
It’s the building’s “top umbrella.” Knowing its condition is just as important as knowing the condition of the flat itself.
