§ Mr. Spriggsasked the Secretary of State for the Environment in which European Economic Community countries the installation of double glazing in either new or existing dwellings is mandatory.
§ Sir George YoungDouble glazing is effectively mandatory for all windows in new dwellings in Denmark and the Federal Republic of Germany. In all other member States of the European Community, except for Belgium, Ireland and Luxembourg, regulations may require windows to be double glazed—or in the United Kingdom, triple glazed—in certain circumstances—for example, when the area of glazing exceeds a stated proportion of the external walls.
In no member State is the installation of double glazing mandatory in existing dwellings.