David is an extremely experienced Architectural Technician. His breadth and range of construction knowledge underpins our entire technical team. He is extremely passionate about detailing and is always ready to pass on his technical knowledge to the emerging architects within the Practice. His particular specialism relates to building envelopes and facade engineering and he has successfully developed methods by which existing steel windows on listed buildings may be replaced with newly-designed extrusions of aluminium whilst complying with strict profile and visual requirements. His technical competence with the National Building Specification has led to direct input to that organisation for inclusion in a number of standard specification sections.