по крыше

on the roof; along the roof

→ по
phrase Rare #47,383
on the roof; along the roof With verbs of movement, it can describe moving along the roof; with verbs like «стучать» or «стрелять», it can mean acting on or at the roof.
RU: Дождь тихо стучал по крыше.
EN: The rain pattered softly on the roof.

Стреляй по крыше!

Shoot at the roof!

— Призрак в доспехах (1995)

Дождь стучал по крыше.

The rain pounded the roof.

Дождь стучит по крыше.

The rain is pounding on the roof.

Кошка идёт по крыше.

The cat is walking on the roof.