Colts replaced the windows in my bungalow in early December 2014. I can safely say that the performance of the windows and patio doors has been excellent. The extra insulation over the original crittal windows is enormous. Much more than that, I recall with appreciation the considerate demeanour around the house that the team of three gave me. I had trepidation about losing some Parana Pine panels internally in favour of plastic but have adapted to the new look very quickly and favourably. Externally the windows are totally in keeping with the Colt finish and the replacement cladding was put on with great care and precision. All round I am very pleased, appreciative and impressed by the change.

Norman Pedgrift, Perthshire