John Priestley is a UK registered Architect with over 25 years experience in the design and construction of a wide range of Commercial, Industrial and Residential projects. He has joined Navigant Consulting from the Architectural Practice Crocker Tooth Priestley, in which he was a Partner. Mr Priestley has extensive technical knowledge and experience in all aspects of the building envelope and construction technology, including roofing, external walling, curtain walling and glazing, cladding, penetrating damp, condensation, internal and external finishes, flooring, fire prevention and control, sound insulation and noise control, facade cleaning, together with design and workmanship defects. With significant and wide ranging professional and technical background in this field, John has been instructed to provide expert evidence in construction disputes for over 22 years. John gives expert opinion and testimony for Claims relating to construction defects, professional negligence, due diligence, standard of care and contractual compliance on matters relating to architectural construction and construction contracts. He also provides technical advice and opinion on matters relating to architectural construction and practice prior to issue of Proceedings, often reducing or at times eliminating the need for recourse to more protracted and costly methods of dispute resolution. John is a member of the Royal Institute of British Architects, the Academy of Experts and the Chartered Institute of Arbitrators.