Fitting insulated (double-glazed -  [[https://www.repairmywindowsanddoors.co.uk/hedgeend-windowrepair/ SO30]] two panes of  [[https://www.repairmywindowsanddoors.co.uk/ Repairmywindowsanddoors.Co.Uk]] glass instead of one) replacement windows will provide some   [[https://www.solostream.com/helpdesk/forums/users/mickiebeaulieu8/ [[https://www.repairmywindowsanddoors.co.uk/hedgeend-windowrepair/ SO30]]]] RH10 sound insulation.