Check which part of the roof the problem is actually on
A continuous roof slope can make the boundary between houses difficult to see from the street.
One gutter problem can affect more than one house
A blocked gutter or outlet may back water up beyond one property.
Older Blackpool terraces often have brick walls and slate roofs
Blackpool Council describes the Foxhall Conservation Area as dense terraced housing unified by brick and slate, while town-centre guidance records many original Welsh-slate roofs.