<P> As part of the project , in 2015 -- 2016 , the concrete structure received new windows and new aluminium composite rainscreen cladding , in part to improve the appearance of the building . Two types were used : Arconic 's Reynobond PE , which consists of two , coil - coated , aluminium sheets that are fusion bonded to both sides of a polyethylene core ; and Reynolux aluminium sheets . Beneath these , and fixed to the outside of the walls of the flats , was Celotex RS5000 PIR thermal insulation . The work was carried out by Harley Facades of Crowborough , East Sussex , at a cost of £ 2.6 million . </P>
<P> As part of the project , in 2015 -- 2016 , the concrete structure received new windows and new aluminium composite rainscreen cladding , in part to improve the appearance of the building . Two types were used : Arconic 's Reynobond PE , which consists of two , coil - coated , aluminium sheets that are fusion bonded to both sides of a polyethylene core ; and Reynolux aluminium sheets . Beneath these , and fixed to the outside of the walls of the flats , was Celotex RS5000 PIR thermal insulation . The work was carried out by Harley Facades of Crowborough , East Sussex , at a cost of £ 2.6 million . </P>
when was the cladding put on grenfell tower
when was the cladding put on grenfell tower
2015 -- 2016
2015 -- 2016