T.L. Roof & Associates Construction is located in Tucson, Ariz. The company provides construction management, general contracting, design and preconstruction services to clients in private and public sectors. It offers various commercial, industrial and institutional construction services. The construction firm serves clients in the field of hotel, retail, telecommunications, aerospace and several other industries. The company s preconstruction group is responsible for estimating and budgeting conceptual estimates and hard bid quotations. The group combines computer modeling and digitized estimating systems with a project database. T.L. Roof & Associates Construction is a part of the O Neil Industries, which owns and operates a family of construction companies.