A well-designed project will be sustained by the systems that keep it running. Shiel Sexton has over 50 years of experience helping owners get the most out of their building systems for years of performance. Through the Plan, Build and Support phases, we apply the Shiel Sexton OS+ methodology to systems review and installation as a standard part of the construction process. At Shiel Sexton, building systems are integral and we employ a team of building systems experts who consult on design, installation and turnover of these critical building components. We believe a great experience means delivering systems as reliable as the building around them.