Emergency services were called to Barrowford after large stones fell from the roof of a terraced house onto parked cars.
Two vehicles in Harry Street were damaged, one severely, after the loose stones became dislodged at 12.30pm on Saturday.
A spokesperson from the fire service said: “We had to get the aerial ladder platform to remove the rest of the loose stones from the roof of the property to ensure this did not happen again.
“One of the cars was left in a bad state.”
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