BU680 Insulating glass units (IGUs) (2022)

H1/AS1 and H1/VM1 5th edition amendment 1 are likely to result in a larger number and greater range of IGUs being installed in housing, and buildings up to 300 m². This bulletin gives an overview of the types of IGUs available and what should be considered in specifying them, with a particular focus on housing. The bulletin replaces Bulletin 598 of the same name.