Several months ago I did a Toolbox Tuesday on the proper tape to use when sealing up your ducts. In spite of its name, duct tape is not the tape of choice, go figure. But since that post, I've used one other method for sealing up our ducts that I've not used previously, and I want to share that with you today.
As you may have noticed, we've been spending a significant amount of time in the attic working on our duct work. After my discovery of the giant hole in the side of our air conditioner's main duct trunk, I've been on a mission to seal this puppy up and make our air conditioner run as efficiently as possible.
Until recently I've been relying almost entirely on the foil tape to sure up all of the leaky and horrible joints. When I run across things like this, I'm glad I'm finally hunting down and fixing all of these problem areas.
Yep, that's a patch with a patch on top of it, just screwed into place with no sealant, tape, or ways to secure it beyond the screws. Do you want to place a wager on whether or not I could feel cold air blowing out almost completely unrestricted near this spot? Who were these guys that installed this air handler? Oh right, I know just who they were. I won't be calling them anytime soon. That's some clown ductwork, bro, that's for sure.
Beyond these glaring holes and giant problems, every seam in the duct work is leaky and loose. While tape has worked wonders, it's a little slow and tedious, especially in tight areas. Recently I started to use something different, and I learned about it while watching This Old House (TOH).

My HVAC and Plumbing Hero, Rich Trethewey
Our favorite TOH plumber, Richard Trethewey, was raving about the efficiency of the newly installed forced air unit on the most recent season of TOH and touched on the use of the sealant rather than tape. This sparked my interest enough that it got me to pick up a bucket the next time I found myself aimlessly wandering the aisles of Lowes (okay, it happens more frequently than I care to admit). Who says product placement is ineffective?
Continue Reading Full Post