8Windows and glass doors

8 Windows and glass doors

8 Windows and glass doors

(1) A new window or glass door in climate zone 8 must be—

(a) double-glazed, or

(b) timber-framed and made of pyrolytic low-e glass.

(2) A new window or glass door in climate zone 2, 4, 5, 6 or 7 must—

(a) during winter—

(i) reduce heat loss from the building, and

(ii) increase heat gain from the radiant energy of the sun, and

(b) during summer—reduce heat gain from the radiant energy of the sun.

(3) Subsection (2) does not apply to the smallest new window or glass door with an area of less than 1m2.