Symmetrical Metal Panels Create Watertight Seam

Morin, a Kingspan Group company, has introduced the SymmeTry Roof Series, a mechanically seamed structural roof system that is symmetrical and hydrostatic by design.

Morin, a Kingspan Group company, has introduced the SymmeTry Roof Series, a mechanically seamed structural roof system that is symmetrical and hydrostatic by design.

Morin, a Kingspan Group company, has introduced the SymmeTry Roof Series, a mechanically seamed structural roof system that is symmetrical and hydrostatic by design. A symmetrical metal roof system does not “lap” over an adjacent panel like standard asymmetrical panels. Symmetrical panels install side by side and have a mechanically seamed “cap” that has two beads of continuous butyl sealant, creating a watertight seam. MORIN’s SymmeTry Roof Series vertical panel legs range from 1 1/2 to 3 inches in height. Because they are bidirectional, the panels can be installed going left to right, right to left, and start from any point of the roof. Symmetrical panels are specified and installed to allow for unlimited thermal expansion and contraction, providing the advantage of installing panels up to 300 feet in length.

Translucent Roofing Material Mechanically Locks Together

Plazit-Polygal has launched Topgal, a modular range of translucent roofing material that is suitable for any building requiring natural light.

Plazit-Polygal has launched Topgal, a modular range of translucent roofing material that is suitable for any building requiring natural light.

Plazit-Polygal has launched Topgal, a modular range of translucent roofing material that is suitable for any building requiring natural light. Produced in five colors—clear, bronze, ice, blue and polyshade silver—delivering different levels of light transmission, the Topgal sheets come in a variety of sizes and thicknesses. The weather-resistant panels are linked together with easy-to-fit connectors that create a mechanical lock between the sheets, ensuring strength and making the panels watertight. Fixture points are hidden and the sheets can be flexed to suit any type of structure. In addition to the standard colors, Plazit-Polygal can tailor special colors and solar-radiation levels.

Metal Roofing Underlayments Protect Structures in Hawaii

The newly constructed Safeway Shopping Center, Honolulu, happens to be the largest Safeway on the Hawaiian Islands. It contains a parking garage below—in part, because of its location in a densely populated neighborhood.

The underlayment manufacturer worked on and approved a design in which the underlayment could be installed directly on the metal deck.

The underlayment manufacturer worked on and approved a design in which the underlayment could be installed directly on the metal deck.

ITS METAL ROOF WAS INSTALLED by Kapolei, Hawaii-based Beachside Roofing, which has been doing business in Hawaii for more than 25 years. The company, which installs all kinds of roofing and waterproofing systems, specializes in high-rise buildings, resorts and complex projects.

The 20,000-square-foot metal roof on the Safeway store had to meet strict color requirements in keeping with the Safeway brand. The color of the roof is Gargoyle, which is a greenish-brown.

The metal roofing was designed to be installed over corrugated 20-gauge steel decks. The underlayment manufacturer worked on and approved a design in which the underlayment could be installed directly on the metal deck.

The metal deck (HSB-36SS type) was installed with the wider corrugations facing up and parallel to the eaves (horizontally). The self-adhering underlayment also was installed horizontally, and the metal panels were then attached to the horizontal corrugations of the deck using panel clips and self-drilling fasteners penetrating through the underlayment into the flattop of the corrugations of the steel deck.

The self-adhering underlayment also was installed horizontally, and the metal panels were then attached to the horizontal corrugations of the deck using panel clips and self-drilling fasteners penetrating through the underlayment into the flattop of the corrugations of the steel deck.

The self-adhering underlayment also was installed horizontally, and the metal panels were then attached to the horizontal corrugations of the deck using panel clips and self-drilling fasteners penetrating through the underlayment into the flattop of the corrugations of the steel deck.

The walkability of the underlayment was an important factor, considering that the roof slope was 4 inches per 12 feet in some places. Also, the 120-day exposure allowance for the underlayment was reassuring, though not necessary for this project.

The metal roofing system included many architectural elements, such as canopies, penthouses and mansards. It covers not just the Safeway supermarket, but also other shops in the Safeway Shopping Center. The way the metal was used architecturally really dressed up the exterior of the project.

Secondary Water Barrier

A self-adhering metal roofing underlayment, like the one on the Safeway Shopping Center, perfectly complements metal roofing panels. The underlayment provides a watertight secondary membrane while the metal panels serve as the primary roof to protect against wind-blown objects and UV radiation. If the primary roof is damaged, the secondary roof acts as the water barrier.

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Thermal Spacers Create Continuous Insulation for Metal Buildings

SNS Thermal Spacers from Sealed “N” Safe are a cost-effective and easy-to-implement thermal bridge system between the outer shell and the inner frames of a metal building.

SNS Thermal Spacers from Sealed “N” Safe are a cost-effective and easy-to-implement thermal bridge system between the outer shell and the inner frames of a metal building.

SNS Thermal Spacers from Sealed “N” Safe are a cost-effective and easy-to-implement thermal bridge system between the outer shell and the inner frames of a metal building. Because the SNS Thermal Spacers reduce HVAC operating costs by as much as half or more, the return on investment is between 12 and 18 months. SNS Thermal Spacers are proven safe and effective, tested per AISI, ASTM, ICC and U.S. Energy Codes and structurally sound and watertight. The company provides solutions for architectural panels, standing seam panels, through-fastened panels, wall panels and complete building envelope systems.