Workers in the quake-hit city of Tsuruoka are using plastic sheets to cover roofs that were damaged by Tuesday's powerful temblor in northern Japan.
A number of homes in the city's Koiwagawa district lost roof tiles in the quake. They developed ceiling leaks when rains pounded the area on Wednesday.
On Thursday, workers used sandbags to hold sheets in place on the damaged roofs.
One worker said nearly 80 homes had lost roof tiles, so the work is expected to continue until nightfall.