How often does ductwork need to be supported?

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Ducts shall be installed using the minimum required length to make the connection. Horizontal duct runs shall be supported at not more than 4 feet (1219 mm) intervals. Vertical risers shall be supported at not more than 6 feet (1829 mm) intervals.

How can you support flexible ductwork?

Support flex duct using straps or saddle supports or as specified by the manufacturer.
Space supports at 4-foot intervals or closer to ensure that the flexible duct does not sag more than 1/2 inch per lineal foot between the supports.
Place supports at each connection between flex duct and rigid metal duct.

How do you support a rectangular ductwork?

Support angles and hangers are the common products for suspension of rectangular or spiral ducts. They are usually attached to the ductwork by screws or rivets. Hangers are a cost-effective and easy-to-use solution for the suspension of ventilation ducts.

What do you use to hold ductwork up?

There are three choices of metal ductwork hangers that are commonly used: a polypropylene strap, a metal strap that’s perforated and therefor adjustable, and wire.

Why duct work needs to be secured and supported properly?

If your ductwork isn’t properly sized and installed, problems will occur. Poor ductwork results in a traffic jam of air within your ductwork, causing your equipment to work harder and potentially a lower life span, as well as a reduction in your overall comfort.

How is ductwork hung?

There are three choices of metal ductwork hangers that are commonly used: a polypropylene strap, a metal strap that’s perforated and therefor adjustable, and wire. The polypropylene strap is best in that it can be cut to any length and will not bend or deform the metal ductwork in any way.

How do you make a duct board plenum?

Slit the foil vapor barrier extending beyond the edges of the duct board with a duct board knife. Fold the ends of the foil onto the outside of the duct board. Staple the foil to the duct board. Tape the flaps down with foil tape to complete the duct board plenum.

What are the characteristics of a good ducting support?

The shape, height, and width of your ducting will depend on airflow rate, the total effective length of the duct system, the friction rate, and other essential details. Ducting supports should be designed around these specifications to hamper noise, prevent erosion, protect ductwork from environmental risks, and evenly distribute weight.

What are your ducting supports made of?

Our ducting supports are constructed with hot-dipped, galvanized carbon steel framing and high-density/high-impact polypropylene, UV-protected bases that won’t crack, corrode, or weaken over time––even in the most extreme environmental conditions. Due to their high-quality construction, our ducting supports will:

Can I install a duct support system on my roof?

Duct support systems can be installed on any type of roof from flat up to sloped up to 2 in 12 slope without penetrating the rooftop surface. Each duct support system is designed and engineered to adhere to your specifications and can accommodate ducting at any height or width.

How do you attach duct support to support legs?

This should be done before any weight is supported. *Attach horizontal bracing to legs of duct supports, (approximately 3/4” of the way up the height of the support), with 3” bolt and1/2” nut. NOTE: If double or triple bracing is required, designated locations will be marked on support legs.

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