General Performance Windows Certificate

BS 644 specifies the requirements of factory assembled timber windows. Covering timber preservation, profile design, workmanship, glazing, construction, safety, security, weather tightness, performance and operation and strength it is often referred to as the benchmark for manufacturers of timber windows. As our commitment to ensuring these standards are not only met but exceeded our products undergo auditing in accordance with BS644 to receive certification for the standard and to provide the first step on the ladder in achieving certification in the enhanced security and paint application schemes.