A family-owned business, FENSA registered and HUP! Approved installer, installing modular extensions, warm roofs, windows and doors across Kent & Essex. The same people, from first survey to final sign-off - Rex Glass and Glazing is a family-owned business, with our team bringing over 25 years of combined experience to every project we take on, from a single replacement window to a full modular extension. We invest the effort to get the survey right, so the quote does not change once work starts, and we send the same installer back to sort and snag rather than passing you between different teams.