heat insulation

Hello all, I'm renovating a bedroom and taken the opportunity to put a few more power sockets in the adjoining room (see pic). This is an internal stud wall - I've put Rockwool acoustic slabs in to dampen sound but now I'm thinking should I remove the 2 pieces of Rockwool I put either side of...

Hey everyone, we have a combi boiler which heats our radiators. Lovely. The only thing is we have big vents around the house which are just gaps in the brick, with an air brick on the outside and a sheet of metal on the inside. You can really feel how much colder it is where the vents are. So...