We work with national and regional house builders, building contractors, offsite manufacturers, builders' merchants and self builders, to provide a product and service that is of the highest quality and saves you time and money too. We offer more than just timber components - we are continually striving to improve our processes and products, to give you the best, in the safest and most sustainable way. Donaldson Timber Engineering Ltd (DTE) is the UK's largest and longest established manufacturer of structural timber components, with eight branches across the UK and over 30 years of experience. DTE supplies a full range of engineered timber products, including: roof trusses, open web joists, and site-ready I-joists. All of our products are made using legal and sustainably sourced timber, one of the most environmentally-sound standard building materials. As a family owned and run business, DTE has strong traditional and family values. We are market leaders in Health and Safety systems; we distribute nationally, providing a local service; and we pride ourselves on providing only the best quality and service.