Denver, Colorado (4/3/2002) --- When the Arizona School Facilities Board received $1 billion bond funding to bring all Arizona schools up to current standards, the challenge was how to roof a large number of schools while they were in session. The answer for the 50,000 square foot Sahuarita School in Sahuarita Arizona was to cold-apply a Johns Manville SBS modified bitumen roofing system.
"The roofs on the campus near the Sahuarita School were all modified bitumen and they looked good," said Brian Oliver, Project Manager for Durrant, the architects for the project. "The roof had to be applied when the kids were in school and we didn't want hot kettles in the area so we decided on cold-applied modified bitumen roofing system."
According to Michael Barfield, a roofing consultant under contract to the Arizona School Facilities Board, up to 30 percent of the roofs are likely to be cold-applied. He believes that multi-ply systems applied with cold adhesive that carry a 20-year guarantee are the best choice in this particular situation.

The Sahuarita School project included re-roofing the cafeteria and auditorium. The cafeteria was frame construction with a plywood deck and the auditorium had a metal deck. Anthony Romero, the superintendent for Custom Roofing oversaw the project and started by stripping the old roof down to the deck. The existing auditorium roof had no pitch for drainage, so Custom Roof added JM Tapered Fesco® insulation over a layer of JM E'NRG'Y 2™ polyisocyanurate insulation. A JM DynaBase® SBS modified bitumen sheet was then set in cold adhesive. A DynaWeld™ Cap FR fire resistant modified bitumen cap sheet was then torched to complete the roofing system. DynaClad™ aluminum foil surfaced modified bitumen membrane was used for the flashings.
Custom Roofing specializes in re-roofing projects and the company does a lot of government work. Bob Hill, corporate secretary, Custom Roofing thinks that modified bitumen and built-up roofing are particularly suitable in the Phoenix area for lower sloped roofs. It is not surprising with the company's nearly 50 year's experience in the roofing industry that they faced few challenges on the job.
"The auditorium was horseshoe shaped so adding insulation was a challenge since we had to run it around a curve. We actually cut the insulation to fit the building," Hill said.
According to Barfield, the school district is very pleased with the workmanship. "This is a good quality job. Everyone worked well together. I was particularly pleased with the support provided by Brian Dembowski of Johns Manville. Brian has shown a great deal of interest in the project and has provided all of the information we needed," Barfield said.
Barfield's greatest concern, however, is finding enough contractors to bid on the many jobs still to be developed. "We are evaluating roofing contractors from out of state to bid on these jobs because there may be more work than the Arizona contractors can handle in the summer/fall cycle," he said.
Johns Manville, a Berkshire Hathaway company, is a leading manufacturer and marketer of premium-quality building and specialty products. In business since 1858, the Denver-based company has sales in excess of $2 billion and holds leadership positions in all of the key markets that it serves. Johns Manville employs approximately 9,500 people and operates 52 manufacturing facilities in North America, Europe and China. Additional information can be found at
www.jm.com.
Custom Roofing specializes in re-roofing projects and the company does a lot of government work. Bob Hill, corporate secretary, Custom Roofing thinks that modified bitumen and built-up roofing are particularly suitable in the Phoenix area for lower sloped roofs. It is not surprising with the company's nearly 50 year's experience in the roofing industry that they faced few challenges on the job.
"The auditorium was horseshoe shaped so adding insulation was a challenge since we had to run it around a curve. We actually cut the insulation to fit the building," Hill said.
According to Barfield, the school district is very pleased with the workmanship. "This is a good quality job. Everyone worked well together. I was particularly pleased with the support provided by Brian Dembowski of Johns Manville. Brian has shown a great deal of interest in the project and has provided all of the information we needed," Barfield said.
Barfield's greatest concern, however, is finding enough contractors to bid on the many jobs still to be developed. "We are evaluating roofing contractors from out of state to bid on these jobs because there may be more work than the Arizona contractors can handle in the summer/fall cycle," he said.
Johns Manville, a Berkshire Hathaway company, is a leading manufacturer and marketer of premium-quality building and specialty products. In business since 1858, the Denver-based company has sales in excess of $2 billion and holds leadership positions in all of the key markets that it serves. Johns Manville employs approximately 9,500 people and operates 52 manufacturing facilities in North America, Europe and China. Additional information can be found at
www.jm.com.