24hr Glass & Glazing Services are committed to offering all our valued customers a first class product and service at a fair price that will exceed their expectations. Quality and service do not happen by accident. 24hr Glass & Glazing Services are specialists in double glazed replacement windows and double glazing. Our double glazing is A+ rated and comes with the finest double glazing guarantees in London. Our replacement windows and double glazing are always custom-made and delivered to our own strict standards.