Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings·Page 53·3.28
Requirements for Non-Exempt Conservatories and Highly Glazed Spaces
Extensions with non-exempt conservatories, sun-rooms or other highly glazed spaces must include thermal separation, compliant controlled fittings, no limit on glazing area, compliant new thermal elements, compliant retained thermal elements, and independent temperature controls where heated or cooled.
Where a building is extended by a non-exempt conservatory or a sun-room or other highly glazed space, the extension should have – (a) thermal separation; (b) new controlled fittings that comply with the guidance in paragraphs 3.57 to 3.64; (c) no limit on the area of glazing (i.e. paragraph 3.20 does not apply); (d) new thermal elements that comply with the guidance in paragraph 3.66 to 3.70. (e) retained thermal elements that comply with the guidance in paragraphs 3.75 and 3.76; 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.
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