Dean, 41, paid £375,000 for his home which was built in 2015.
Each morning he wakes up and worries about the roof, he says.
Two roofing companies have told him there are too few rows of tiles, meaning the overlap isn’t sufficient to prevent water ingress.
But Bellway and its insurers, the National House Building Council (NHBC), have rejected Dean’s claims, saying repair work of a poor standard by an independent builder, didn’t comply with regulations and invalidated his warranty.
It said the NHBC inspections had “not identified a defect within the original construction of Mr Carpenter’s property” or any evidence of a leak or water ingress.
Since then, Bellway has blocked Dean’s emails and threatened legal action if he continues posting critical remarks on Facebook.
“I feel totally fobbed off by Bellway,” he says.
“The roof needs replacing, it needs re-battening, re-tiling and re-relaying correctly.”
