There are many types of traditional, PRC and other non traditional constructions. However, only the following types are classed as defective under Part XVI Housing Act 1985.
ENGLAND AND WALES
Airey
Boot
Boswell
Cornish
Dorran
Dyke
Gregory
Hawksley SGS
Lilleshall
Myton
Newland
Orlit
Parkinson Frame
Reema Hollow Panel
Schindler
Smith
Stent
Stonecrete
Terran
Underdown
Unity & Butterley
Waller
wates
Wessex
Winget
Woolaway
SCOTLAND
Blackburn Orlit
Boot
Dorran
Lilleshall
Lindsay ( Ayrshire CC )
Myton-Clyde
Orlit
Tarran
Tarran-Clyde
Tee Beam
Unitroy
Whitson-Fairhurst
Winget
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