Paragraph 4 Items permitted to be included in insulation works
In addition to the items referred to in paragraph 2 of this Schedule the insulation works done under this Scheme may include only the following items:
where no inlet fan ventilator system or combined ventilator system is to be provided under paragraph 2 of this Schedule, either
the provision and installation in each room in which there are to be insulation works under this Scheme of one inlet fan ventilator unit of a type conforming to the standards of ventilation and acoustic performance specified in paragraph 7 of this Schedule including connecting the ventilator unit by wiring of not less than 5 amps capacity to the nearest convenient point in the existing electric supply circuit or to the electric mains switchboard, and
the provision of an air supply duct with external cowl or grill in accordance with the specification in paragraph 7 of this Schedule, in an external wall of each room in which there are to be insulation works under this Scheme for supplying fresh air to the ventilator unit and the blocking up of any existing airbrick, provided that flues and direct inlet ducts to combustion appliances in use shall not be blocked; or
the provision and installation of a combined ventilator system in accordance with the specification in paragraph 9 of this Schedule:
the provision of a second door behind or in front of any external door opening directly into an insulated room, the shortest horizontal distance between the two doors being not less than 150 millimetres, at least one of the doors being weather-stripped, and the ceiling and walls between the doors being lined with sound absorbent material;
blocking at fireplace level, by means of board of a minimum weight of 10 kilogrammes per square metre adequately sealed round the edges, of chimneys into rooms which have been insulated in accordance with paragraph 2 of this Schedule: provided that flues to existing combustion appliances shall not be blocked;
the provision of Venetian blinds between the double windows in a room insulated under this Scheme which faces in a 270° arc between north-east and north-west such blind being of a size and thermal specification prescribed in paragraph 6 of this Schedule.
making good the existing fabric and decoration (not including curtains) after the installation of double windows, ventilation equipment and second doors, including the adaptation of any existing pelmet and curtain track.