Flex Ductwork In Attic

The attic is a hot dirty nasty place.

Flex ductwork in attic. Here are some advantages for each. How to hang flex duct in an attic 1. The straps that hold up the flex duct need to be no less than 1 5 wide. The really bad news is that with old metal duct systems the only option is replacement of the ducts to stop the rain in the attic.

The attic ductwork is flex duct work. Blown in insulation is cheap. The higher in the attic the hotter it is. They just tear through them smash them climb on.

Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water. Flexible duct is a plastic tube that is reinforced with wire and then insulated on the outside. Ducts are to be part of what is inside the house not part of. Ducts up high get tore up.

Not part of what is in the attic. Just blow the attic to r 38 and over the top of ducts if needed. They both have advantages and disadvantages. The official recommendation from the adc is that flex ducts should sag no more than 1 2 per foot of length between supports.

The right choice in ductwork for you likely depends on the specifics of the attic above your in law suite. The next most typical type of duct systems is made of flexible duct. This type of duct means a smoother interior with better air flow insulation applied on the outside to cut down on fibers getting into the system and a durable shell not easily punctured by rodents or uv light. Secure the webbing to the joist by hammering a 2 inch roofing nail through the webbing and into the side of the joist.

Hold the loose end of a roll of duct support webbing against the side of a roof joist sitting directly above the flex. The lower the cooler it is. Flex ducts themselves do not sweat however if the connection points are not sealed correctly and duct leakage is occurring then you can get sweating at those points. Flex ducts on the other hand are smaller and tube shaped like giant shiny worms.