What type of insulation is best for ducts?


Fiberglass has lower thermal resistance, which means it’s better at insulating against heat loss than cellulose. Cellulose also reflects more sound from space than fiberglass does because of its higher density (though both are considered good for noise reduction).

How do you insulate ventilation ducts?

Quote from the video:
Quote from Youtube video: Wrap. All ducks with foil Faced fiberglass insulation having an R 6 value or greater and sealed the joints with foil face duct tape prefer a hands-off approach to your ductwork.

How can I make my air ducts more efficient?

Duct insulation will further reduce the loss of heat (or cold, for A/C) through your ducts, improving the overall efficiency of your HVAC system. Choose your insulation. Foil-backed fiberglass bats are a cost-effective option. As long as the insulation is heat-resistant, and rated at least R-6, you’re good to go.
Apr 6, 2018

Can you insulate around ducts?

Ducts that leak heated air into unheated spaces can add hundreds of dollars a year to your heating and cooling bills, but you can reduce that loss by sealing and insulating your ducts. Insulating ducts in unconditioned spaces is usually very cost-effective.

Can fiberglass insulation touch ductwork?

Fiberglass insulation can touch HVAC ductwork provided the ducts are not leaking or forming too much condensation. The insulation should be snug enough to prevent significant gaps throughout the ductwork.

Should you insulate return ducts?

Supply ducts in an unconditioned attic must have insulation equal to or greater than R-8. Supply ducts in an unconditioned attic must have insulation equal to or greater than R-6. All other supply ducts and all return ducts in unconditioned spaces must have insulation equal to or greater than R-6.

How do you install duct insulation sleeves?

Quote from the video:
Quote from Youtube video: Slide it over the bag. And then once the insulation is on you can pull it out and you won't get any snags otherwise it tore up in the air. After I did my before measurements I cleaned up the pipe.

How do you insulate around furnace ducts?

When insulating HVAC ductwork, use a foil, faced fiberglass insulation with an R-6 or higher R-value. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. Make sure the foil surface of the insulation is free of dust before applying the tape.

Should you insulate ductwork in attic?

When HVAC ducts are installed in a vented attic in a dry climate, bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space. Install ductwork so that it is in direct contact with (i.e., laying on) the ceiling and/or truss lower cords.
Apr 5, 2018

What is foil faced insulation used for?

Foil faced insulation is the best type of insulation for retaining heat in the winter and keeping heat out in the summer. This insulation product is designed to slow heat transfer and enhance acoustical performance. It also works as a barrier for methane, radon, vapor, termites and other vermin.

Should I get faced or unfaced insulation?

Faced insulation is easier to install.

This is because the insulation is held together by the paper vapor barrier, allowing the faced insulation to be rolled, moved, and stapled without falling apart. Unfaced insulation does not have the same cohesive strength, so it’s more susceptible to tearing during installation.
Dec 15, 2021

Where do you put foil backed insulation?

Foil-faced insulation can use in a wide range for commercial and residential applications:

  1. Exterior wall,
  2. Roof,
  3. Ceiling applications (like in cathedral ceilings – frequently required for use in ceilings without attics)

Jul 18, 2018

Is foil insulation any good?

Reflective foil insulation, as the name states, reflects the radiant heat, which is very important if you know that over 70% of heat loss and gain within the building envelope comes from radiant heat transfer. This makes this type of insulation very useful both winter and summertime.

Does foil backed insulation need an air gap?

Do you need a 25mm air gap under the membrane? Although this is often considered standard practice, it is not a requirement; the important thing is that the drape in the breather membrane (which allows any water getting through the tiles to channel down to the gutter) should not be pushed out.
May 8, 2017

What is the best foil insulation?

Multifoil Insulation is More Sustainable Than Other Options

Multifoil insulation has even more efficient benefits than other insulation options on the market. SuperFOIL insulation is also better for the environment because it’s made with 40% recycled materials and fully recyclable at the end of its life!