San Francisco has long been known as a center for culture and the performing arts. Showcased by its War Memorial Opera House, considered the last Beaux Arts building constructed in the United States, this legacy continued with construction of the adjoining Louise M. Davies Symphony Hall. Opened in 1980 and renovated in 1992, its modern design was a collaboration of architects and acoustical engineers working in concert to create an intimate environment to enhance the music of the San Francisco Symphony and the beauty of the structure itself.
Recently, the San Francisco Public Utilities Commission (SFPUC) determined that installing a photovoltaic (PV) solar system on Davies Symphony Hall would benefit the people of San Francisco. The SFPUC retained engineering consultant AEPC of San Ramon, Calif., to design the PV solar system for the 25,000-sf roof.
In addition to AEPC, the project team for the roof revitalization and PV solar system installation included Technical Roof Services (TRS) of Concord, Calif., and Fidelity Roof Company of Oakland, a Duro-Last® Certified Elite Contractor.
Moisture Issues Necessitated New Game Plan
Initially, the installation of a rooftop solar energy system seemed to be straightforward. However, upon further inspection, significant moisture issues were discovered in the underlying roof insulation, contributing to deteriorating conditions in the 14-year-old tar and gravel roof.
Davies Symphony Hall. Photo: Duro-Last Roofing
To further assess the roof’s condition, AEPC brought in Technical Roof Services (TRS) to conduct a more thorough evaluation. According to Venk Mani of AEPC, “We knew the roof had some leaks and wanted to correct any problem areas before the solar panels were installed. Our goal was to ensure that the roof could last the life of the solar array, or a minimum of 25 years.”
Presenting the Options to Ready Roof for PV Solar
Dregger presented the two available options to the SFPUC: either tear off the current roof and install a new one, or overlay the existing roof with a new membrane. After careful consideration, the SFPUC opted to re-cover the existing roof since replacing the old roof with a new one would take longer and interfere with the symphony’s rehearsal and performance schedule. After evaluating the available membrane alternatives, Dregger recommended a white 60 mil thick thermoplastic PVC roof system from Duro-Last Roofing.
Material Prefabrication Expedited Installation
Prefabrication was another advantage of the Duro-Last Roofing System. The membrane was prefabricated into 22 foot wide rolls, reducing the application time and on-site welding. In addition the penetration flashings, parapet wall membrane, membrane curbs, solar hold down boots and other related roof materials were all custom fabricated at the factory. This not only assured installation accuracy at changes in plane on the roof, such as projections, curbs, drains, perimeters and abutting walls, but of equal importance was Fidelity Roof Company’s ability to expedite the installation process and meet critical deadlines.
Location: San Francisco
Client: San Francisco Public Utilities Commission
Contractor: Fidelity Roof Company
To read the entire article, visit www.duro-last.com/marketing.
For more information:
Phone number: 800-248-0280
Fax number: 800.432.9331
E-mail: jbruzews@duro-last.com
Website: www.duro-last.com
Related Stories
Sponsored | Roofing | Apr 15, 2015
Curved metal panels allow for community college expansion
A new campus was needed to support an Ohio community college's expanding population
Building Materials | Feb 19, 2015
Prices for construction materials fall in January, following plummet of oil prices
The decline in oil and petroleum prices finally showed up in the produce price index data, according to ABC Chief Economist Anirban Basu.
Sponsored | Energy Efficient Roofing | Feb 12, 2015
How does airflow under a metal roof further enhance energy savings?
Metal roof coatings with solar reflectance can help building owners save substantially in annual cooling costs. Research has confirmed that creating an air space under a metal roofing system will increase energy savings during both summer and winter months.
Sponsored | Roofing | Feb 11, 2015
New school blends with local architecture using Petersen metal roof
Perkins Eastman in Stamford, Conn., designed the school to emphasize and integrate the International Baccalaureate curriculum throughout.
| Nov 17, 2014
Resolving practical problems in roofing retrofits and renovations [AIA course]
This course, worth 1.0 AIA HSW learning unit, provides expert advice on how to make a roof last as long as possible, and how to properly retrofit or reroof when the roof has run its course.
Sponsored | | Sep 2, 2014
Metal roofs offer energy-efficiency, durability, and recyclability
Metal roofing material is known for its durability, but it also offers two other sustainable attributes that are sometimes overlooked: enhanced energy-efficiency and high recyclability.
| Mar 20, 2014
Fluor defines the future 7D deliverable without losing sight of real results today
A fascinating client story by Fluor SVP Robert Prieto reminds us that sometimes it’s the simplest details that can bring about real results today—and we shouldn’t overlook them, even as we push to change the future state of project facilitation.
| Dec 10, 2013
16 great solutions for architects, engineers, and contractors
From a crowd-funded smart shovel to a why-didn’t-someone-do-this-sooner scheme for managing traffic in public restrooms, these ideas are noteworthy for creative problem-solving. Here are some of the most intriguing innovations the BD+C community has brought to our attention this year.
| Nov 25, 2013
Manufacturers race to offer EPDs, HPDs in response to LEED v4
Under LEED v4, projects are awarded points for using at least 20 building products that have issued Environmental Product Declarations or Health Product Declarations. In response, manufacturers are racing to offer EPDs and HPDs for their product lines.
| Oct 30, 2013
Metal roof design tips: The devil is in the details
This AIA/CES-approved presentation provides information regarding proper design to prevent possible infiltration from the roof system into the building. It also works as a guide when designing a roof to allow for proper water runoff.
