My bedroom's ceiling has been leaking (more like dripping) when it's raining or snow melting, and I highly doubt that the old TV satellite dish caused the roof leaking. (Pic 1)
What troubles me more is that I noticed there is another spot with thin horizontal lines on the ceiling and it’s right above where I usually sit and work. (Pic 2)
I have an inclined roof and the leaking spot is located slightly higher than pic 2's spot.
Can anyone tell me what might be the cause of this kind of line?
the dark spot is caused by my phone's camera