Profile: BSRIA Ltd. specializes in construction and building services. We are an ISO 9001:2000 certified company. We offer air tightness testing, thermal imaging of air leakage paths, accredited training, and smoke testing services. Our blower door is a compact, lightweight, and simple to operate building air-tightness testing system. Our external roof system inspection will examine roof and roof-light construction, gutters & drainage, safety systems, roof protrusions & rainwater downpipes. We offer a wide range of facilities management(FM) engineering services, from maintenance strategy consultancy to hands-on condition monitoring, and site investigation services.