CITY COUNCIL AGENDA ITEM
ACTION REQUESTED:
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Approve the award of Cooperative Procurement 22-064, Public Works Service Center Roof Restoration, to Garland/DBS Inc. for an amount not to exceed $2,293,110 and a 3% contingency and for a three-year term
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DEPARTMENT: Department of Public Works
SUBMITTED BY: Richard Dublinski, Director
BOARD/COMMISSION REVIEW:
N/A
BACKGROUND:
In 2020, Garland/DBA Inc. performed a roof assessment at the Public Works Service Center (PWSC) prior to reinforcing a 7,500 square foot section of roof necessary for the installation of the solar panels. The PWSC was constructed in 2009 using a Thermoplastic Polyolefin (TPO) roof. The roof is a 45 mil, single ply roofing membrane and covers 213,000 square feet. This roof type has a 10 to12 year life expectancy.
At that time of the 2020 assessment, it was noted the roof was nearing life expectancy. Additionally, ponding was discovered which is consistent with the leak responses requested over the past several years. As part of MB176, Municipal Facilities Roof Replacement, the Department of Public Works - Public Building Operation (PBO) will reinforce the roof over a period of three years between 2022 and 2024. Without reinforcement, the roof is at risk of developing additional leaks and water ponds which can lead to structural failures.
DISCUSSION:
PBO met with Garland/DBS Inc. and determined that the roof can be fortified with the application of Unibond fabric reinforcement, waterproof membrane and two coats of White Knight fluid membrane. The application of these materials will give the roof an additional 60 mil of thickness. After the coating is cured, the roof membrane will measure 100 mil which will extend the life of the roof an additional 20 years.
The first phase consists of reinforcing approximately 30,000 square feet of roof over the office spaces. The initial phase of the work will begin on or about April 1, 2022 and be completed by August 31, 2022. The second a...
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