The Municipal Center building at 5211 Maryland Way was opened in 1987 and serves as the home to City Hall, Fire Station 1, and the Brentwood Police Department headquarters. The building's roof was last replaced 17 years ago and has been experiencing an increasing number of leaks. The attached proposal from Garland/DBS, Inc. would provide a major rehabilitation of the roof that includes replacement of compromised portions of the roof membrane and insulation, re-taping of all seams, application of a 45 mil. urethane restoration coat on the entire roof, as well as installation of moisture relief vents, drain inserts, walk pads, and overflow scuppers. The restoration system comes with a 10 year warranty and 5-year extension option at the end of 10 years.
Staff evaluated the options available for rehabilitation or replacement of the existing Municipal Center roof and settled on the Garland restoration solution available via U.S. Communities Government Purchasing Alliance Master Agreement #14-5903. The provider, Garland/DBS, Inc. is a full-service roofing system manufacturer that provides turn-key project delivery including roof evaluation, thermal imaging scan, specification development, bidding, inspections, and oversight - all provided by the manufacturer of the product. In contrast to typical roof replacements, this method allows the City to contract directly with the manufacturer, as opposed to a local contractor. It also avoids the cost of hiring design professionals to prepare plans and specifications. The principal product being applied is Garland's White Knight Plus, an energy efficient (bright white in color) liquid waterproofing membrane made from an aliphatic polyurethane. Similar projects have been completed by Garland for Williamson County, City of Franklin, Metro Nashville Public Schools, and Wilson County. Reference checks indicate a high degree of satisfaction with Garland and the White Knight product.
As part of the initial evaluation, a thermal imaging scan was conducted to determine the extent of moisture intrusion into the insulation. That scan determined that the entire roof does not need to be replaced. There are isolated areas where the membrane and insulation need to be replaced, and many areas where membrane and flashing require repairs, but moisture intrusion is not pervasive. Avoiding a complete tear-out of the existing roof saves the expense of upgrading insulation and raising nearly all of the 18 roof-top HVAC units that are currently too close to the roof surface. It also saves the disruption caused by removal of the old roof.
The U.S. Communities contract provides for projects to be priced-out using unit pricing established in the contract. For the Municipal Center's 37,000 sq.ft. roof, that cost comes to $275,384. The contract also provides for pricing using Garland-approved local market contractors to determine which is most cost effective. Garland bid the project to three local roofing companies (Water Control Roofing Company, Tim Leeper Roofing, and Southern Roofing Company). The pricing from Water Control Roofing Company of Gallatin, TN proved the most favorable at $249,129. Additive alternates were also proposed (for drain inserts at all existing drains and installation of overflow scuppers per the building code) at a cost of $18,579, bringing the total for the project to $266,708.
A total of $280,000 was budgeted in the Municipal Center Fund for this purpose. In addition to the $266,708 contract, staff recommends approval of an owner's contingency of $13,292 (approximately 5%) so that hidden conditions do not cause delays in the project. The project total, including contingency, would be $280,000. If awarded, work will be completed by the middle of June.
Please contact Assistant City Manager Jay Evans with any questions. |