ROCKWOOL ROCKCLOSE® fire resistant Cavity Closers If left uninsulated, as much as 20% heat loss can occur around door and window reveals. This results in both expensive heat loss and damaging exposure to moisture. ROCKWOOL ROCKCLOSE® fire resistant Cavity Closers work to effectively minimise thermal bridging at door and window reveals in cavity wall constructions. Buy yours with us today at www.insulationbee.co.uk or speak to one of our friendly staff on 02038839057
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