Conservatories, sun-rooms and other highly glazed spaces

Where a dwelling is extended by a non-exempt conservatory or by a sun room or other highly glazed spaces, the extension should have – (a) thermal separation; (b) new controlled fittings that comply with the guidance in paragraphs 3.43 to 3.50; (c) no limit on the area of glazing (i.e. paragraph 3.11 does not apply); (d) new thermal elements that comply with the guidance in paragraphs 3.52 to 3.56; (e) retained thermal elements, if any, that comply with the guidance in paragraphs 3.61 and 3.62; and (f) where the extension is heated or cooled by a fixed building service either taken from the main system or provided solely for the extension, independent temperature and on/off controls.