8. In article 19—
(a)in paragraph (1), after sub-paragraph (c), insert—
“(ca)is not the installation of a first time heating system at uninsulated premises;”;
(b)at the end of paragraph (2), insert—
““room-in-roof” means, in relation to insulation, insulation of the ceiling and walls of a room in the roof space of a building;
“uninsulated premises” means premises other than a mobile home—
which include the top floor of the building in which they are located and which—
do not have flat roof, loft, rafter or room-in-roof insulation; and
are premises at which flat roof, loft, rafter or room-in-roof insulation can be installed; or
which have exterior facing cavity walls which—
can be insulated; and
are not insulated.”.