Built in 1913, this listed building had window refurbishment work carried out which went from standard single glazing to our Slim-Glaze double glazing product which offers low sight-line and low U-values while being able to glaze in the traditional look of the original style windows. Starting at 11mm thick these double- glazed units can optimise the insulation provided within the home with a 77% reduction of heat loss compared to the original single glazing which was first used.