Decayed framing and toxic moulds
This is directly under the Italian clay tile job. Untreated timber decayed, severe stachybotrys and other toxic moulds. Carpets were ruined, linings had to be destroyed, a sorry state.
This is a spare guest room and no one had really taken any notice of the smell. Visually it held together but underneath no.
What is wrong here is a multitude of failures.
- External timber framing behind absorbent stucco is meant to be H3 (ref NZS 3602:1995 Table 1B) it was untreated so decayed
- No cavity was provided to manage condensation (NZS 3602:1995 BRANZ reference Cunningham 1983 rp031) so water entering through the failed underlay accumulated and provided conditions for moulds to grow
- Winstones GIB linings were changed on or about 1994 to remove boron so have no mouldicides to prevent mould growth
- NZ Fibreglass started adding starches to dampen down carcinogenic glass fibres getting into installers lungs and blood.
- No testing of any of the roofing systems to determine the need for underlays and if so how will the be supported and remain durable for the life of the building eg wire netting, ponding boards, glass reinforced - or whatever
- No monitoring of moisture - note Prendos emails 1999 requested monitoring to find out if details were weathertight
And when I did invent monitoring in 2004 none of the regulators and only a handful of decent experts and builders supported them. I was the only manufacture to use them. They didn't want them - why - of course - allowing home owners tools to test moisture properly would discover their negligence. Claims they don't want.
Now its your problem. Its never too late to find out before your home gets into this sort of state.