I contacted John Duffy of JD Glazing about my conservatory. It was leaking badly and there seemed to be no way of tracing the leak. John quickly identified the source of the leak, which at first seemed quite serious and costly to have put right. But – in n time, John came up with an innovative solution and hey presto! No more leaks. I cannot praise John highly enough for his know-how, diligence, courtesy and cost-effective solution. Thank you John!