Article content provided by Johns Manville.
Spiral ducts are very common in today’s commercial settings. They offer a myriad of benefits ranging from longer duct runs to reduced leakage because they have fewer joints. Additionally, many architects and designers prefer the aesthetic appearance of a spiral duct over that of a rectangular duct.
Spiracoustic Plus® is a single-wall spiral duct liner designed to offer excellent thermal and acoustical properties for spiral duct systems. As an alternative to double-wall insulation systems, Spiracoustic Plus is a pre-kerfed fiberglass insulation designed to line the inside of spiral ducts. It removes the need for the interior duct and reduces the weight of the overall system.
Beyond offering a snug, custom fit for a complete range of duct sizes, Spiracoustic Plus comes with an airstream surface that is factory-coated with Permacote®. This coating is designed to help protect the fiberglass substrate from damage and helps ensure a smooth, robust airstream surface. Lining single-wall systems on straight runs is also a relatively simple process.
Watch detailed video instructions for insulating straight runs and fittings with Spiracoustic Plus.
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Johns Manville supports contractors with productivity- and performance-enhancing mechanical products, including duct, pipe, and building insulations.