I contacted Kwik2fix having read good reviews, and noticing that one of their specializations was replacing 'blown' sealed unit double glazing. My five failed sealed units were all on the first floor and had been installed some 20 years ago by Coldshield, who are no longer trading. Within a couple of days of me contacting Kwik2fix, Darren visited my property and measured up for the replacement units. Communications were excellent throughout, all calls were taken by Claire, and she kept me well informed about the initial visit and the installation date and time. A two man team removed the old units and replaced with new units very quickly and efficiently, very tidy work. The price paid was as quoted, and Darren even fixed my entrance door which had dropped on it's hinges over time and was binding; It now open and shuts perfectly. As a bonus Darren did the door fixing as a gesture of good will, without charge, what a fine and knowledgeable man! Ace company, highly recommended!