SPI is an award-winning MWBE | SBE | DBE company started in 1991. Headquartered in Denver, Colorado as a subcontractor, Shamrock has a long history in the painting industry. SPI serves a wide array of high-profile clientele in most every construction & maintenance sector of painting & wall covering. We have extensive experience in: Cost Estimating, forecasting & Budgeting, Project Management, scheduling & certification for USGBC LEED projects. We streamline critical schedule constraints & challenges using iPads in the field for real-time and Job site safety program meetings. Our experience, industry knowledge, quality work, performance, safety program and owner/client satisfaction qualify us to become a valuable subcontractor of your construction team. Check us out to learn more and see a gallery of completed projects.