When it comes to adding duct insulation your monthly savings in utility bills will soon cover the costs especially if you install the insulation yourself.
Adding insulation to attic ductwork.
Test total duct leakage.
Affix rigid foam insulation to the attic side of the hatch or door.
The problem with uninsulated ducts.
If it is less than an equivalent of r 30 you could probably benefit by adding more.
Ted has more than a few cobwebs in his attic.
The duct insulation should include a vapor barrier cover.
You need insulation even around your ducts no matter where you live.
In this case the temperature gradient between supply air and the ceiling can be such that the duct surface could be cooler than the local dew point.
Attic hatch or door.
The cost and effort to add more insulation is minimal.
I have a single level home with big open attic it has blown insulation and very narrow crawl space but my furnace electric has the single return air duct running about 4 feet from furnace it is in lowered ceiling from bathroom to kitchen my question is can i use a flexible hvac pipe duct an d run a network to living room and two bedrooms.
The unconditioned space also houses his hvac system.
To find out if you have enough attic insulation measure the thickness of the insulation.
Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120.
Secure the insulation with short strips of foil tape.
Pull down stair or ladder.
Consider adding more insulation as ductwork is farther from the furnace.
Install loose fill insulation to cover the ducts and the attic floor to meet or exceed the code required r value for attic insulation.
In many homes the insulation layer in the attic is along the floor.
Apply a long strip of foil tape along the seam in the insulation.
Wrap the insulation around the duct and then pinch the seam closed.
One of the most effective ways to convert your attic space into a spare bedroom is to remove the insulation from the floor and add insulation to the attic ceiling.
If your rigid metal ductwork has any insulation it may already have enough.
Repeat to insulate the remaining ducts.
To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct.
If you want to cover metal ductwork.
This isolates the attic from the rest of the home which means the attic isn t part of the conditioned envelope.
In a vented attic this can happen when the duct is in close proximity to conditioned space i e the ceiling and also thermally isolated from the hot attic beneath the ceiling insulation.
Before insulating seal any air leaks and make roof and other necessary repairs.
Insulation isn t only about keeping heat in.
The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago.
Mechanically fasten and mastic seal all duct connections.
