Energy Efficient Windows That Won't Cost The Earth! Double Glazing Specialists in Cradley Heath and Surrounding Areas Here Black Country Glazing Ltd, we believe that professionalism and quality are the cornerstone of a reliable business and therefore customer satisfaction. Since being founded in 1987, we’ve been dedicated to offering the very best in the double glazing and window installation business in Cradley Heath and all surrounding areas, always providing top quality services on doors, windows and conservatories. We also manufacture our own products and provide 10 year guarantees. All of our replacement windows and doors come with FENSA certificates and are A rated as standard. Call us now for a free no obligation quotation