It must be done properly to ensure that the building is structurally sound and weathertight.
Restricted building work involves or affects the:
- primary structure – the resistance of vertical loads (such as walls and columns) and horizontal loads (such as foundations, floors and roofs)
- outside of the building – anything that prevents the entry of outside moisture and helps to control moisture inside the building fabric.
Examples of restricted building work include:
- damp-proofing the floor area, on and underneath floors
- installing roof and wall cladding systems (windows, ventilators, openings and penetrations etc.)
- waterproofing anything that’s exposed to airborne moisture or can allow moisture to enter a building, such as a balcony
- designing systems to protect people and property from fire.
Get more information about restricted building work (PDF 518 kb)