Roof leaks can be a museum’s worst enemy, threatening water damage to artifacts and disturbing delicately controlled indoor environments. That’s why an $8.3 million renovation to the core exhibits at the George H.W. Bush Presidential Library and Museum in 2007 was done in parallel with fixing approximately 75,000-sf of the flat, spray-applied polyurethane foam (SPF) roof that had provided almost 10 years of service.
“We were redoing the core exhibit so I thought it was a good time to check the roof,” explains Robert Spacek, Facility Operations Specialist for the George H.W. Bush Presidential Library and Museum.
The original roof was a foam and silicone-coated system. Although SPF roofs can often last 20 years or more, and are renewable indefinitely with simple recoats every 10-15 years, this one was showing some wear and tear. As part of the renovation, there was talk of tearing off the existing roof and replacing it with another solution. This option, however, would be extremely expensive and time-consuming. Plus, the artifacts and records would have had to be moved and the building closed to the public during renovations.
“This particular roof was still in excellent shape and performing well. There was nothing wrong with the base foam roofing insulation,” explains John Austin, Vice President of Spray Polyurethane Foam and Coatings for F.W. Walton Inc., the contractor on the project. “But there were some leaks related to the rotunda and control joints in the windows, and membrane repairs were ineffective to prevent those roof leaks.”
Spacek made a request to the National Archives and Records Administration (NARA) for funding for the roofing project. The NARA architects were subsequently asked to research the cost of replacing the entire roof. After consulting with BASF technical experts, it was discovered that only certain parts needed minor repairs, so a tear-off and replacement could be avoided.
Once the project was approved, the bid went to Houston-based F.W. Walton, Inc. Having found the root of the problem, Austin used ELASTOSPRAY SPF from BASF to perform minor repairs on various parts of the existing roof, followed by a recoat of the entire roof to provide a consistent and fresh aesthetic appeal. This renewal would continue to deliver on the energy savings inherent in SPF roofing systems, prolong the life expectancy of the original roof and provide a quick installation with minimal disruption. All at a far reduced cost compared with a tear off and replacement. Plus, it would divert a lot of waste from landfills.
For more information, contact:
BASF Corporation
100 Park Avenue
Florham Park, NJ 07932
info@basfconstruction.us
construction.basf.us
And thanks to the decision to repair and recoat the original roof, the work didn’t inconvenience the public or expose artifacts to the elements.
“We didn’t have to change anything,” says Spacek, who adds that it was his first big job with this type of roofing system. “Things went really well. The contractor was very easy to get along with. In all honesty, I didn’t understand a lot about this stuff until I started this job. I am very pleased with the results. It has been a very satisfactory experience for me.” +
Related Stories
| Jan 19, 2011
Architecture Billings Index jumped more than 2 points in December
On the heels of its highest mark since 2007, the Architecture Billings Index jumped more than two points in December. The American Institute of Architects reported the December ABI score was 54.2, up from a reading of 52.0 the previous month.
| Jan 19, 2011
Large-Scale Concrete Reconstruction Solid Thinking
Driven by both current economic conditions and sustainable building trends, Building Teams are looking more and more to retrofits and reconstruction as the most viable alternative to new construction. In that context, large-scale concrete restoration projects are playing an important role within this growing specialty.
| Jan 10, 2011
Architect Jean Nouvel designs an island near Paris
Abandoned by carmaker Renault almost 20 years ago, Seguin Island in Boulogne-Billancourt, France, is being renewed by architect Jean Nouvel. Plans for the 300,000-square-meter project includes a mix of culture, commerce, urban parks, and gardens, which officials hope will attract both Parisians and tourists.
| Jan 10, 2011
Michael J. Alter, president of The Alter Group: ‘There’s a significant pent-up demand for projects’
Michael J. Alter, president of The Alter Group, a national corporate real estate development firm headquartered in Skokie, Ill., on the growth of urban centers, project financing, and what clients are saying about sustainability.
| Jan 7, 2011
BIM on Target
By using BIM for the design of its new San Clemente, Calif., store, big-box retailer Target has been able to model the entire structural steel package, including joists, in 3D, chopping the timeline for shop drawings from as much as 10 weeks down to an ‘unheard of’ three-and-a-half weeks.
| Jan 7, 2011
How Building Teams Choose Roofing Systems
A roofing survey emailed to a representative sample of BD+C’s subscriber list revealed such key findings as: Respondents named metal (56%) and EPDM (50%) as the roofing systems they (or their firms) employed most in projects. Also, new construction and retrofits were fairly evenly split among respondents’ roofing-related projects over the last couple of years.
| Jan 7, 2011
Total construction to rise 5.1% in 2011
Total U.S. construction spending will increase 5.1% in 2011. The gain from the end of 2010 to the end of 2011 will be 10%. The biggest annual gain in 2011 will be 10% for new residential construction, far above the 2-3% gains in all other construction sectors.
| Jan 7, 2011
Mixed-Use on Steroids
Mixed-use development has been one of the few bright spots in real estate in the last few years. Successful mixed-use projects are almost always located in dense urban or suburban areas, usually close to public transportation. It’s a sign of the times that the residential component tends to be rental rather than for-sale.
