To seal these openings use caulk or spray foam.
How to seal air ducts in attic.
Possibly in an unfinished basement.
There is typically a gap between the framing of.
You all have duct work either in your attic or crawlspace or something like that.
Make sure the duct is secure in place and wait for it to dry.
It is also recommended that you have your pipes insulated in both areas.
If you do not have proper insulation in your attic and basement consider insulating both.
For larger holes filler material may be needed.
Well if they re not properly sealed.
After sealing air ducts in the basement and attic you will find that both areas will become colder.
Use zip ties to secure any loose ducts to the attic floor.
Air duct sealing video transcript.
Locate the source of the thermal leaks by inspecting the ductwork while the air conditioner is running.
Apply a generous amount of sealant mastic over the thermal leak.
I ll show you how to find leaks and seal them in the how to video.
It s easy to overlook electrical wires ducts pipes and vents in the attic but the openings around these are holes can compromise the air sealing of your attic.
Sealing your ductwork can shave 20 off your energy bills.
Duct sealing by michael church here and in this video we re going to show you how and why it s very important to air seal the run of the ductwork.
Additional air duct sealing tips.
Seal fireplace and furnace holes.
Most homeowners don t think about sealing the air ducts of their home but the process is crucial to keeping your house energy efficient.