7.1Flat roofs and balconies

This chapter gives guidance on meeting the Technical Requirements for flat roofs and balconies. Waterproofing using profile sheet is outside the scope of this chapter.

Definitions for this chapter

For the purposes of this chapter, the following definitions apply:

Flat roofA roof with a maximum slope of 10° from the horizontal. Systems may be used at a greater pitch where they meet the requirements of this chapter, and materials are adequately held in place.
DeckThe structural substrate of the flat roof.
DeckingThe upper trafficked surface of the balcony.
Warm roofInsulated above the deck.
Cold roofInsulated below the deck.
Inverted warm roofInsulated above the waterproofing.
Intensive green roofVegetation contained within soil.
Extensive green roofVegetation contained in the sedum.