A class action lawsuit is alleging a major building product manufacturer never tested its product before selling it - and once they knew it was defective, continued selling it.
More than a thousand people are involved in the suit taking the James Hardie group of companies to court, collectively seeking more than $200 million.
It's a mammoth case - six years since the first legal claim, to in part determine one of the country's longest running legal dramas - leaky homes. And it is finally in court.
Jordan Bond was there.
