(26 Total References)
Long familiar with DensDeck for these ...
Long familiar with DensDeck for these qualities and more, Rich Gagnon of Schreiber Corporation selected versatile DensDeck® Prime Roof Board as a component in the $229 Million Phase 3 renovation of the iconic Cobo Center in downtown Detroit, MI.
The massive 200,000-square-foot reroof project was completed using DensDeck Prime, and his foreman specifically complimented its stronger bond, smoother appearance, and more efficient use of adhesive.
Complexities of Ford Field Require Three JM Roofing Systems
Rich Gagnon, Schreiber's senior project manager/estimator, came up with the idea of using a pool liner as a temporary roof, which could later serve as an air barrier for the permanent roofing system.
"As the project manager, I acted as the liaison between the general contractors and our company," said Rich Gagnon, Schreiber Corporation.
Because of the amount of equipment on the rooftop, Gagnon
did not believe that the originally specified fully-adhered EPDM system would hold up to the amount of construction activity and maintenance traffic the roof would experience.
recommended changing the specification to a phased application JM SBS modified bitumen system.
The warehouse roof was installed in a phased approach.
According to Gagnon
built a vertical or knee wall just below the Kalwall system.
"Considering all of the other challenges with this job, the expansion joints created a special challenge," Gagnon
Features Item : Running the Option: Schreiber Corp. Stays on Top of Changes for New Stadium Job
According to Rich Gagnon, Schreiber Corp.'s senior project manager/estimator, the company's success is due to its honest professionalism.And when asked what makes Schreiber Corp. stand out from the crowd, Gagnon replies, "First and foremost it would have to be our employees.We have an experienced staff and a dedicated, conscientious work force.I don't think there is a project we can't do.Many of our workers stay with the company because of its exemplary history and high-profile client base."These high-profile clients include General Motors, DaimlerChrysler Corp., Ford Motor Co., and Detroit Institute of Arts, as well as large Detroit-area general contractors and architects such as SmithGroup, Hunt Construction and Walbridge Aldinger.
"We were part of a short list but we had to be there on price," Gagnon
explains."The post-bid interviews were extensive and comprehensive.We had recently successfully completed another stadium right next door (Comerica Park) for the same contractor."
The specification for the job called for an adhered thermoplastic system and allowed for either Sarnafil or Johns Manville products.
We really wanted to deal with only a single manufacturer," adds Gagnon
."We also relied on their technical staff which flew out from Colorado to meet with the project architect and help smooth out some of the wrinkles."
Huddle And there were a few wrinkles.
"Establishing our actual timeline and duration was difficult due the structural steel erection delays," says Gagnon
."At the same time, we had a concern about our work being damaged by other trades due to the scheduled sequencing."
These challenges led to changes in the designed system, which had called for an adhered thermoplastic membrane."We used multiple types of systems – PVC adhered, and SBS and APP modified - to create solutions to tricky details not laid out in the project documents," says Gagnon
."We had to pick and chose details to make it work.We knew we could incorporate the use of thermoplastic and modified bitumen and have it all work together seamlessly.Well, actually there were quite a few seams!"
The eventual installation was a combination of the designed system and an SBS modified bitumen coupled with sections having APP modified bitumen.According to Gagnon
, there were a few different reasons for this change."The structural steel delays landed the main application of the low roofs during winter months, which was an untenable situation due to the characteristics of the membrane and the performance of the adhesive."In addition, "There remained the issue of potential damages by follow-on trades, such as the mechanical supply lines that required much welding.There were also many areas where material staging by other trades was planned."
There were several different resulting roof systems.The main high-barrel vault has a fully adhered 60-mil, reinforced thermoplastic system.
"We then installed a 15-mil thermoplastic membrane to serve as an air barrier," explains Gagnon
."It just so happened the material was an actual pool liner acquired from HPG and also served as a temporary roof over the whole 350,000-square-foot section.The owner agreed to upgrade the originally specified reinforced poly film to the 15-mil PVC material.Over the pool liner, we loose laid two layers of isocyanurate insulation, the first layer being 1.2 inches thick followed by a 1.5-inch-thick layer.Over the insulation, a layer of .25-inch-thick DensDeck Prime was mechanically attached through all the underlying components."
The other lower-sloped roofs comprised granule-surfaced modified bitumen installed over insulation schemes varying from fully tapered isocyanurate with a .5-inch-thick wood-fiber overlay board to a double layer of isocyanurate covered with a 1-inch-thick wood-fiber board.
"The entire warehouse project was accomplished using a phased application," Gagnon
explains."If we didn't switch to phased construction and modified bitumen, we would have had to put a new roof on twice."
A double-reinforced base sheet was mopped to underlying isocyanurate covered with .5-inch-thick wood fiber."After the other trades requiring roof access were essentially complete, we returned to complete the cap sheet which was set in cold application adhesive," says Gagnon
."Before the cap sheet was applied, we contracted a firm to perform a thermal scan to identify areas of damage, which we patched prior to the final application of the cap sheet."
Play-by-Play Overall, Schreiber Corp.
was responsible for the roofing and sheet metal as well as expansion joint covers on the 540,000-square-foot stadium roof and the 110,000-square-foot warehouse roof.
According to Gagnon
, the most difficult aspect of the job was the schedule.In addition, "If you asked our foreman, he
would probably bring up the weather too.These guys had to work in very high winds and very cold temperatures followed by blazing heat.In the last few months, they were working seven days a week 10 hours a day.The key words were determination and perseverance.The foreman and crew were phenomenal and went above and beyond the call of duty."And in regard to safety measures, Gagnon explains, "Our safety director, field supervisors and foreman are second to none as far as understanding and applying technical and practical safety measures."
From an administrative perspective, "The challenge was all the changes that had to take place, and keeping good records," says Gagnon
.To remedy the situation, the management assigned the estimator as a full-time project manager.
In short, "We are very proud of all that was accomplished on this landmark project," says Gagnon
.Meanwhile, Detroit football fans wait patiently for the Lions to make the city proud.
RR March 2001
Rich Gagnon – Schreiber Corporation
Flexibility, On-Site Decisions Key to Meeting Tight Schedule on Roofing Project for New Home of Detroit Tigers
That's why it was important to Rich Gagnon, the senior project manager for the roofing contractor, Schreiber Corporation, to work with a team he could rely on to support the tight schedule under which he was operating.
Gagnon believes they were fully supported in that process by the Johns Manville team including Kathy McDonald from Phil Johnson Sales & Assoc. Inc. and Dean Kepler, the local JM field technical representative for the job.
"The Johns Manville representatives realized some of the unusual circumstances on this project and recommended solutions," said Gagnon
"Their technical advice and on-the-job support were outstanding," he