The sandwich duct panel is a unique building material consisting of rigid polyurethane and aluminum, as well as triple layers of precision-stamped steel for enhanced support. The interior also consists of two metal layers carefully welded together along the rim encapsulating fiberglass section, this helps in better insulation. When used correctly, this product can give your building a nice, attractive exterior without having to compromise on looks, sound insulation, energy consumption or fire safety.
The panel is typically used as foam material or rigid thermal insulator as highlighted above. Its conductivity ratio is valued at 0.023 W/( m K)), of course depending on the perimeter/area ratio. They can as well be used for heating, ventilation and air-conditioning depending on the person’s needs. Likewise, prefabricated models are usually fitted with corrosion-protected, ridged steel facings carefully bonded into the core and used extensively as roofing insulation or vertical walls for both residential and office buildings.
It’s a fact that the effectiveness of insulation found in a building can severely be compromised by small gaps resulting from shrinking of individual panels. Even though manufacturing criteria requires that this shrinkage should be limited to less than a 1%, the resultant gaps around the perimeter of each panel can significantly reduce your building’s insulation effectiveness, particularly in cases where the boards are supposed to provide some form of vapor/infiltration barrier. Only a sandwich duct panel with multiple layered staggered joints, ship lap or tongue & groove joints can help prevent these problems.
In any normal situation, these layers are designed to contribute towards a greater form of stiffness than what’s found in other competing products. The enhanced bond strength also means they are more difficult to break, hence chemically and thermally more stable to ensure the product lasts longer. Break-down of the isocyanurate bonds found in these ducts will start at around 200 Degrees Celsius, which is an impossible temperature level to reach.
Depending on the product’s specific application, greater stiffness and chemical/ thermal stability may be necessary or not. As such, manufacturers may sometimes provide multiple product variations with similar densities but varying indices. This is typically done to achieve optimal end-use performance.
Other benefits of this product include:
a) Advanced pressure vessel design
b) No frames are required before installation
c) It’s streamlined shape provides a practical access area
Most sandwich duct panel brands are fire-resistant meaning that they won’t burst into flames even when exposed to such conditions. Before purchasing this product from the stores, always ensure that it has sufficient warranty from the manufacturers.