28Implied warranty of habitability

Sarah has rented a house from Frank.The house is only two years old, but the roof leaks every time it rains.The water that has accumulated in the attic has caused plaster to fall off in the upstairs bedrooms, and one ceiling has started to sag.Sarah has complained to Frank and asked him to have the roof repaired.Frank says he has caulked the roof, but the roof still leaks.Frank claims that because Sarah has sole control of the leased premises, she has the duty to repair the roof.Sarah insists that repairing the roof is Frank's responsibility.Discuss fully who is responsible for repairing the roof and, if th responsibility belongs to Frank, what remedies are available to Sarah.