By bizn_fun 
Building surveyor Mr Walter, says poor design and poor workmanship has caused the render to disintegrate. He says rainwater will very likely get under the cracked render and behind the insulation and will likely cause dampness inside.
”It’s like a timebomb. It’s going to get worse and worse, affecting the inside of the property,” he says.
Mr Walter says all of the render and insulation will have to come off and will cost tens of thousands of pounds to put right.
Right now the family is stuck with the repair bill because the installer, SPMS Wales, is being liquidated and Mr Proudman says they weren’t given the required guarantee for the work. Trustmark, the organisation responsible for overseeing quality, says it can’t help because the company lost its accreditation soon after the work was completed.
Mr Proudman says he chose the company ”because it was on a government website and was Trustmark registered. I can’t believe how few rights consumers have.”
Brett Langdon, a director at SPMS Wales says he is ”very sorry the Proudmans have ended up in this situation” and says all works ”were done to the manufactures specification.” He says he gave a guarantee to the Proudmans but has told the BBC he can’t remember who the guarantee is with. He says the delamination of the render was “due to a failure of the system”.
In a statement TrustMark said it was ”very sorry to hear about what’s happened to Mr and Mrs Proudman and Mr and Mrs Wadley and the conditions both families’ homes have been left in. It is totally unacceptable and we are in discussions with the relevant Scheme Providers and guarantee providers to help resolve these situations.”
And it said it underlined ”the need for reform to the current system”.