Secure the fiberglass insulation in place around the boot with foil faced duct tape.
Attic duct boot pictures.
Either duct wrap the boots or foam them.
Cut a piece of foil tape to length.
Here s bob s trick for taping a seam on a pipe that s installed close to the subfloor.
I will use a combination of doors and windows great stuff and the normal expanding great stuff.
Today i bring you a few photos that are signs of a bad duct installation.
The next most typical type of duct systems is made of flexible duct.
Last month while i was in austin homebuilder extraordinaire matt risinger gave me a tour of some of his projects.
Air sealing all the ducts and air handler connections and seams and air sealing all the duct boots to the ceiling gypsum and any other penetrations is a critical first step prior to adding any insulation.
Also they are detail oriented the clean up and rodent proofing work were completed with care.
They helped us replace air ducts and boots on the attic install a new furnace flue pipe bubble wrap the furnace plenum box seal all joints well.
The point about testing expansion is a good point to consider.
If the ducts are going to be concealed all seams need to be taped or caulked.
Pictures of the roof vents turbine vents.
Finally pull down on the backing which will pull the tape along.
Btw they offer 5 year warranty on their work.
The foam does have an advantage in that while the boots are being foamed one can also seal the joint between the boot and where the boot is mounted ceiling wall floor.
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.
There are two main ways to solve this problem.
A homeowner in atlanta was getting a home energy upgrade and one part of it was getting a.
Jump ducts which do not directly deliver conditioned air from the hvac unit may be located in attics if all joints including boot to drywall are fully air sealed with mastic or foam and the jump duct is fully buried under the attic insulation.
They did a good job and the charge was reasonable.
It was new when the ac was put in 7 years ago.
I ve searched the forum and it looks like i do not have insulated boots and when i went up to the attic today i noticed the boot was cold to the touch and had a small draft coming from where the boot meets the sheetrock of the ceiling.
4 if your round air ducts run below the joists lay one insulation batt on top of the duct.
Peel off part of the backing.
When the hot humid attic air contacts the cold duct or the cold duct boot the moisture in the air condenses on the cold surface just like the condensation that happens on a cold can of beer.
The air in your vented attic is hot and humid just like all outdoor air in florida.
Slide the backing up and over the pipe.
I was thinking of using great stuff and sealing around the boot.
Flex ducts themselves do not sweat however if the.
This way there is no infiltration at this point.
