The Building Regulations (Amendment) Regulations 1999
These Regulations further amend the Building Regulations 1991 (S.I. 1991/2768) to substitute a revised Regulation 7, which is set out in Regulation 4 of these Regulations. The revised Regulation 7 retains the obligation to carry out building work using materials which are appropriate to the particular circumstances which apply, and for those materials to be used in a workmanlike manner. In addition, it provides that materials used in building work must be adequately mixed or prepared, and that they must be used so as adequately to perform the functions for which they are designed. The revised Regulation 7 no longer refers to forms of product approval: guidance on materials and workmanship is given in the approved document referred to below.