Do you stretch your flex duct before you install it, I never used to but I was recently informed of the correct way to do it.... The more you know huh!
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I Know I'm going to get the flex duct taters, but when you install it properly, it should work just perfect. Right out of curiosity. Have you ever heard or read the instructions on flex duct that you're supposed to stretch it tight for a certain you know, couple minutes before you actually take it into the building? And it's not the jacket, it's the actual liner. the plastic liner inside.
We're stretching it out to get the memory out of it. So I'm curious you ever heard that before?.
That’s how I was taught as well!
well dang ive installed a lot of flex the past couple years lol
Every residential crew ive seen will stretch it out and mach up the way it will run in the home and prep joints and do everything leaving it on the ground a while before pulling it into the attic like a crab molting its shell.
Difficult to do when you by your self. Get a home depot volunteer. Definitely roll back like long sleeves and pull the inner black tube. Grip at least 2 – 3 metal coils when stretching. Don't use duct tape to hold outer insulation material. Always have decent panduit gun or k band zip tye gun if you are googling where to buy. Good luck it's a fun field if you can travel to work and don't have kids. Service area Ottawa??
Is there a pinned comment containing a link to the full video?
No never heard that ?? 🤔 wow
My company stretches it by having 2 guys pull it at the ends. We gain a few feet every time Are you in Orleans ?
It’s called scrim rookie Service area Orleans??
If you don't stretch it it will collapse and reduce airflow.
Does it look like I care, I’m taking it up in the bag and cutting it open upstairs 🤡
❤Makes seance ❤
Flex is mainly what we use here in Australia haha
aw man i hate doing ductwork. but yes thats exactly what we do. work for a commercial company and its pretty rare for us to do ductwork though.
Pull the piece of tape off the end too at the beginning.
If I've learned anything, it's that the installers don't read the install instructions on anything.
And yes, flex duct works just fine, you just have to size it and install it properly.
It’s written right on the side of the box that it comes in. Problem is that most of the guys in our industry can’t read or don’t bother reading installation instructions that are provided with the product. FJB Are you in Nepean ?
As far as my own home is concerned, i remove all flex duct and blown in garbage insulation, replaced with sheet metal duct.
Every non-HVAC worker that goes into my attic steps on the flex and crushes it down and air flow to the vent in my bedroom is gone. I call the HVAC guys and they climb in there and open it back up. Then the plumbers, roofers, electricians, crawl around in there and crush it back down again. It's maddening. I am considering replacing with rigid sheet metal ducts.
Yup
Do it every day, on multi family homes/ apartments. As someone who does this all day, you get your partner to grab the opposite end and grab the outside liner, insulation and inner liner and tug it good, then your all good, unless the trusses are fucked.
Stretching duct reduces friction, the lining inside the duct loses air flow if it’s crinkly
Still doesn't stop the itching afterwards though…
60 lbs for 60 seconds I think. I always attach it to the boot/elbow and pull tight for a second then attach.
Yes, but I bet you that not many other do Are you in Barrhaven ?
Flex duct is garbage
Now that we've gone to an R8 you have to stretch them out and let them grow…
I never knew they say to do that I’ve always just done it cause it’s easier than in some shitty as attic or crawl space
Dont forget to have the new guy grab the duct stretcher 😂😂
I have the same conversation all the time. And I always tell them if it's installed properly like it's supposed to it will work just as good
Installing it properly is only using 3 feet. Not cutting 8 take offs from a plenum and running an entire box of flex to every single register… Service area Barrhaven??
You've got to stretch it out. The inner liner can bunch up and restrict it.
Anybody else start itching as soon as u seen this 😂😂
But do what yall do
It's also the friction for air flow because ribs inside
Flex duct everywhere in fl
Yes I have read the instructions lol but when you think about it of course you want them pulled taught or it's going to kink and your airflow gonna be garbage
I’ve been taught to have one person on each side pulling on the inner liner part
Yep! Flex does work, perfect? Debatable. I hate the stuff
As long as you know what you doing it works
Nothing wrong with flex when used properly, unfortunately it usually isn’t installed correctly.
Stretch it out I’m im zip tieing it and hanging it bam Service area Nepean??
For my own system I use rigid pipe taped joints and 2 layers of insulation. For everyone else break out the flex duct! Lol. Actually I just like the look of the rigid pipe as the space is used better.
I’ve been doing that for decades 😂
i learned to stretch the flex prior to installation when we converted our house to central hvac, at first i thought it was strange that it called for that, but it made it soo much easier to install after getting the memory out of the inner ducting
Thats a good idea but i usually strech the liner (bladder as me and a buddy call it) after making the first connection and slipping the insulation/jacket over what ever fitting im attching to. The extra bladder kinda helps slip the insulation/jacket around fittings like 90's, boots, wyes, etc
It looks like your are using R-6? Why not just go with R-8? Are you in Ottawa ?
If you don’t stretch it you will not get proper air flow
I never knew that! Learn something new every day…
if you stretch your flex for more than 4 hours, call a physician.
when I install I stretch flex and always use cable ties not just tape Service area Kanata??
Yes of course
Yep every time
RTFM
You know what your doing 👍
Fire hazard? Are you in Kanata ?
Stretched tight black strap every three foot.
Ive run duct for years in residential and never stretched it before instal. I always pull the outer liner when I run it, then pull the inner liner before connecting.