Fort Belvoir Military Base, located in Northern Virginia, is now home to a Polyglass multi-ply modified bitumen roof system. NV Roofing proposed the Polyglass system to replace a 60,000 square foot aged TPO roof. The new roof system features mechanically attached Polyglass G2 Base sheet, heat-welded Polyflex® smooth interply sheet and heat-welded Polyflex® G granulated cap sheet in white. The redundancy of a multi-ply roof system results in a longer roof service life and return on investment for the building owner.
Project Type: Commercial
Joseph Caleb Daycare Center
Overview
Joseph Caleb Daycare, an early childhood education center in Miami, Fla., gets a new self-adhered, modified bitumen roof system. Roofing contractor Florida Building & Supply removed the existing failing roof and installed Polyglass’ roof system featuring CURE Technology® and ADESO® Technology. The daycare center, which caters to over 160 children, remained open during the roofing project.
Challenges
The project required an energy efficient roofing solution that also complied with the South Florida wind resistance requirements for high velocity hurricane zones. Furthermore, the building owner preferred a roofing solution that did not release fumes and odors during installation, narrowing the options available. Polyglass’ self-adhered modified bitumen roof system was a perfect fit for this project because of its high reflectivity, durability and ease of installation. In addition, waterproofing the existing skylights presented a challenge because they were irregular shaped. Polyglass’ PolyFlash 2C, an odor free, liquid flashing system was applied to the skylights to form full closure.
Roof System Components
The 20,000 sq. ft. roof features Polyglass’ three-ply, self-adhered modified bitumen roof system with a 20 year roof systems warranty. System components include:
- Elastoflex SA V, a self-adhered SBS modified bitumen membrane. This membrane was used for the base and interply sheets.
- Polyfreskco G SA, a white, self-adhered APP modified bitumen membrane was used for the surface layer of the roof system. Polyfresko G SA cap sheet is manufactured with CURE Technology, a thin-film technology that improves the membrane’s durability, UV and stain resistance, and granule adhesion.
- Polyflash 2C, an odor free, UV-stable fluid-applied flashing system was used to waterproof the skylights.
Sarasota High School, Fla.
Project Overview:
Founded in 1913, Sarasota High School in Sarasota, Florida has undergone several renovations to accommodate its expanding student body. As part of a $42 million campus redevelopment project, the Sarasota County School Board renovated several buildings on the campus. Springer-Peterson Roofing and Sheet Metal based in Lakeland, Florida was selected for the work. The roofing contractor recovered the buildings using Polyglass’ Polyfresko® G cap sheet. Polyfresko G is a highly reflective white APP granulated cap sheet membrane. It is manufactured with Polyglass’ patented CURE Technology®, a thin film technology that improves the membranes longevity. Membranes with CURE Technology are highly reflective, energy efficient, UV and stain resistant and retain granules longer.
Challenges:
The Springer-Peterson crew worked with a tight timeline to complete the 52,000 sq. ft. job. The roof was made up of 11 different roof areas with parapet walls a minimum of 4’ high separating them. Access was minimal on one side of the facility. The expansion joints were located at the walls making them challenging to install. The crew also had to protect the grass and sidewalks as they worked on the roof. The project was completed before school reopened in fall 2016.
The Roofing System Selected:
Springer-Peterson installed the Polyfresko G cap sheet to an existing substrate. The system was installed after perimeter fastening enhancements were in place to meet uplift requirements. Polyglass’ PolyFlash 2C liquid flashing system was used for the details. PolyFlash 2C is a fluid-applied urethane material using a fleece reinforcement which forms watertight flashings at joints, parapets, walls, and other penetrations.
Fort Worth Warehouse Facility
Project Overview:
In Spring 2016, commercial roofing contractor Empire Roofing installed Polyglass’ modified bitumen roof system on a warehouse building in Fort Worth, TX. The new 64,000 sq. ft. roof system was installed over an existing built-up roof (BUR). Empire Roofing, known for roofing expertise since opening its doors in 1942, selected Polyglass’ multi-ply modified bitumen roof system for the storage facility.
Challenges:
During the Polyglass roof system installation, a severe hailstorm hit Northern Texas slowing the roof work. More than 25 percent of the new roof was completed when the hail storm arrived. The golf ball-sized hail stones caused minor blemishes to the surface of the Polyglass Polyfresko® G cap sheet; however, the BUR portion of the roof had extensive damage. The damage to the BUR caused a delay in the project, but also provided a side-by-side comparison on roof performance during a severe hailstorm.
The Roofing System Selected:
Empire Roofing chose Polyglass’ high performing Polyfresko G cap sheet and Elastoflex SA V base ply. Polyfresko G is a highly reflective, white granulated modified bitumen membrane. It is manufactured with Polyglass’ patented CURE Technology®, a thin film technology that greatly improves granular retention. Membranes with CURE Technology are also highly reflective, and UV and stain resistant. The Elastoflex SA V membrane is a premium, self-adhered base ply roofing product, manufactured using patented ADESO® Dual-Compound Self-Adhered Technology, whereby a “true” Styrene-Butadiene-Styrene (SBS) modified asphalt compound is applied on the top layer and an aggressive self-adhesive compound is applied on the bottom layer.
Garland Distribution Center
Project Overview
An internationally recognized manufacturer of flooring solutions expanded its distribution center in Garland, Texas. The company added an additional 60,000 square-foot space to its existing 180,000 square-foot warehouse facility, increasing capacity for finished goods. Centimark Corporation, a nationwide roofing contractor in business since 1968, was selected to install the new roof system.
Challenges
The Northern Texas region experiences severe weather throughout the year. In the spring, the region is prone to supercell thunderstorms that can produce large hailstones. Temperatures can reach over 100 degrees Fahrenheit in the summer. Centimark’s customer required an energy efficient and durable roof system to provide premium coverage for its second largest distribution center.
The Roof System Selected
Centimark selected a multi-ply modified bitumen (mod bit) roof system. The two-ply mod bit system consists of Polyglass’ Elastoflex SA V self-adhered SBS base sheet and Polyfresko® G SA, a highly-reflective white granulated self-adhered APP cap sheet. For insulation, 4″ Polyisocyanurate was mechanically attached to the roof’s steel deck.
Polyfresko G SA provides the reflectivity required to consistently reduce the interior temperature of the building. In addition, Polyfresko G SA is listed with the Cool Roof Rating Council (CRRC®) and has an initial SRI of 96. Polyfresko G SA also features patented CURE Technology®, a thin film technology that ensures the membrane will maintain its bright white surface.
The Polyglass self-adhered system was appealing for this project because of the quick installation time and the ability to address the details around the many roof penetrations. Another contributing factor to the decision is the long-term performance of a Polyglass multi-ply system. Read more about this project in Western Roofing Magazine (Nov./Dec. 2016 issue)
LaGorce Palace Condos
About the Project
The La Gorce Palace Condos, with its distinct dark blue glass tower, is a high-end residential property located in Miami Beach, Fla. Designed by Schapiro Associates, the 34 story luxury condominiums were built in 1996 on prestigious Collins Avenue overlooking the Atlantic Ocean.
La Gorce Palace Condominium Association selected roofing contractor Building Unlimited, Inc. (since acquired by Miami, FL-based Isaacs Roofing) to tear off and reroof the 12,000 square foot roof.
Challenges
Collins Avenue is an international tourist destination with its beautiful ocean front hotels, popular white sand beaches and world-renowned dining and shopping options. A busy location, the project was not conducive to utilizing construction equipment that could potentially interfere with traffic. As a result, materials were transported to and from the roof in freight elevators.
The Roofing System Selected
The previous roofing system was removed down to the structural concrete deck. The new Polyglass self-adhered modified bitumen roofing system consisted of two layers of Elastoflex SA V SBS membrane and Polyflex® SA P granulated cap sheet. The three-ply roofing system featuring Polyglass’ patented ADESO® Self-Adhered Technology was installed over tapered polyisocyanurate insulation.
The Polyglass roofing system was selected based on project conditions and the building owner requirements. Critical project specifications included the following:
• Wind design pressure requirements for a high-rise building in a hurricane zone
• Minimal equipment for installation
• Speed of installation
• Reduced waste
• Durable multi-ply system backed by Polyglass’ 20-year roofing system warranty