BRISTOL, Conn. – To meet the demands of stringent codes, Morin, A Kingspan Group Company, has introduced the SymmeTry Roof Series, a mechanically seamed structural roof system that is both symmetrical and hydrostatic by design.
The options and advantages of a symmetrical system over an asymmetrical system are many and during the next few years, symmetrical roof systems will revolutionize our industry.
Currently, there are only a handful of metal roofing manufacturers offering a symmetrical panel profile and fewer with the technical know-how to provide solutions to difficult roofing problems. MORIN’s SymmeTry Roof Series has four panel depths – more than other manufacturers – and three coverage widths, making it a versatile system offering for architects, specifiers, roofing consultants and installers.
A symmetrical metal roofing 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 (without interruption by panel clip) butyl sealant, creating the most water tight seam of all metal panel types. MORIN’s SymmeTry Roof Series vertical panel legs range from 1-1/2 inches to 3 inches in height.
The SymmeTry Roof Series panels, by design, are bidirectional, meaning they can be installed going left to right, right to left, or start from any point of the roof.
In the event a panel needs to be replaced because it’s damaged or large penetrations need to be added after the installation, panel replacement is easier and less expensive with a symmetrical panel. Building owners only have to replace the panel or panels affected by damage or new penetrations and install a new seam cap.
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. The clips are fixed and the panels move up and down the slope engaging on the clips rather than the clips sliding and running out of expansion capacity. These panels can be formed onsite. By eliminating end laps, and ensuring a proper installation by qualified installers, leaks are greatly reduced and/or eliminated completely.
Each manufacturer of symmetrical standing seam roof systems will have its panels tested. The SymmeTry Roof Series from MORIN has undergone or is undergoing a wide variety of tests that will allow for its installation anywhere, including where the strictest wind uplift codes and wind driven rain requirements are in place.
MORIN’s taller panels (2-1/2- and 3-inch legs) will meet requirements to be installed at very low slopes. It will meet ASTM E-1680 air infiltration, ASTM E-1646 water infiltration and ASTM E-2140 static water pressure requirements, which means the panel can be flooded and it won’t leak.