These videos are phenomenal. While I'm only really interested in replacing the insulation on my duct work, these videos are so well done and so detailed I keep watching them.
@xxxtcify
11 ай бұрын
Andrew, you really got an interesting profession - and you explained very well! Thank you so much for this great video!
@M16Scow
8 ай бұрын
Great video. I appreciate your attention to detail.
@williammarik6159
Жыл бұрын
Andrew. Another great video. My local supplier sells rolled armaflex and i have been tempted to use it for plenums and plenum take-offs but i have always stuct to what i know best and that is the tried and true R-8/silver-foil duct wrap. With the time and effort involved with your example of the 12" pipe, that would easily be a $3-400 dollar section. I get WHY you are using this since ductwrap is easily damaged during the install process but it can be easily repaired at the same time. Just my thoughts. Love your work. My guy,s are all into what you do. Thx !
@aglmechanicaltips
Жыл бұрын
After getting good at this we can produce a 5' section about every 5 minutes so it actually becomes a very fast process. When installing in trusses the labor is significantly less because you no longer have to fight insulating seams in between trusses and takeoff installation is also quicker. This labor offset still doesnt cover the additional cost of the material but definitely closes the gap some. This is our normal application for the main trunkline in a truss only and in most other applications I agree duct wrap is the way to go.
@williammarik6159
Жыл бұрын
@@aglmechanicaltips Thx for the reply.
@hairlesscactus
Жыл бұрын
I'm going to have new exposed spiral duct put into my small home (living room) that transitions into rectangular duct (in the closet). The contractor is pushing uninsulated duct, due to it all being inside the living area (no attic space). I wonder if the push is more due to the difficulty of insulating the prefab spiral round. I'm worried about noise and condensation. I'm not sure which way to go.
@aglmechanicaltips
Жыл бұрын
If you are not leaving doors open the spiral duct will exist in conditioned space. As long as the system was designed right the temp and humidity should be such that the duct cannot reach dew point (will not sweat). If you do plan on leaving the doors open at times you can get double wall spiral duct that is insulated internally with fiberglass. It will look the same as the uninsulated spiral. The internally lined spiral duct is expensive though and weighs a lot. It is also a bit difficult to make the connections too. I normally use clevis hangers to hang spiral duct because it is cosmetically appealing but quite a bit over kill.. Hope this helps.
@hairlesscactus
Жыл бұрын
@@aglmechanicaltips Thanks for the reply.
@SkyCandyVisuals
5 ай бұрын
Great video Sir! If I have 20" spiral duct on a packaged unit outside would you recommend wrapping externally with this Arma flex or traditional r8 fiber glass insulation? Also what methods are used to weather proof it after its wrapped around the spiral? Does externally wrapped Arma flex get mastic like fiberglass insulation or just wrap it with some silver lined foam weather wrap? Thanks so much for all the knowledge. (HTX)
@aglmechanicaltips
5 ай бұрын
I would use fiberglass due to the higher R value. I would solid mastic but that is not going to water proof it. You need to make sure that the duct is protected with a sheet metal rain hood or something similar.
@SkyCandyVisuals
5 ай бұрын
@aglmechanicaltips what if a sheet metal rain hood isn't an option for the return and supply spiral wrapped in external r8 insulation and masticed? Can I wrap it a 2nd time in some sort weatherization reflective wrap?
@andrewlingle8985
5 ай бұрын
I'm not sure, this is nothing I have done. I would assume some sort of roofing sealant would be the way to go like sealoflex or something. There are some materials used for waterproofing duct work on roofs but I'm not in the commercial realm and wouldnt know these products without doing some research.
@carlyleworkman1928
4 ай бұрын
👍🏿
@ChristopBaker
Жыл бұрын
Does this not cause a air flow Restriction?
@aglmechanicaltips
Жыл бұрын
You build your duct slightly larger to cover the insulation thickness so in the end there is the same area for air flow.
@bxx7666
Жыл бұрын
Any chance you could make a video showing how to connect boots to supply vents in a ceiling application? Do I cut a hole in the drywall and frame around it with 2x4s? Can I just screw them together without the framing? I saw your "Insulating ductwork fittings" video but I don't know what to do after insulating all the boots! thanks
@MAGAMAN
Жыл бұрын
He briefly talks about what to use for ceilings in another video.
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