duct board

[keeplearnin]

To duct board or not to duct board that is the question
I personally hate the stuff what are your opinions.

[GroundSquirrel]

To duct board or not to duct board that is the question
I personally hate the stuff what are your opinions.

Itchy stuff

[ADillon]

HAHA! Hate it. Only high velocity systems should ever use the stuff.

[keeplearnin]

HAHA! Hate it. Only high velocity systems should ever use the stuff.

or low velocity either. I would rather fabricate sheetmetal or just use plenums for return and supply air if possible.

[Kevin Weaver]

its got its places.

As a sales guy I hate to see equipment changed out and the transition is duct board to metal.

[genduct]

HAHA! Hate it. Only high velocity systems should ever use the stuff.

Where others think it erodes with age, you and the High Velocity manufacturers use it in the most demanding application.

For those who haven't seen it done right, we have provided millions of sq ft of board for 2x millions of sq ft of commercial space and connect to as large as 110 ton rooftop with several 52x30 ducts with a full 2" of static.

I know there are some who can't seem to get an 18x18 plenum to stay together on a 2 ton split. WIsh the manufacturers were more proactive on the training

[dlove]

Where others think it erodes with age, you and the High Velocity manufacturers use it in the most demanding application.

For those who haven't seen it done right, we have provided millions of sq ft of board for 2x millions of sq ft of commercial space and connect to as large as 110 ton rooftop with several 52x30 ducts with a full 2" of static.

I know there are some who can't seem to get an 18x18 plenum to stay together on a 2 ton split. WIsh the manufacturers were more proactive on the training

I worked on a commercial office building where they use duct board for high velocity and it seems to be fine in most cases. What i found there was split seams or vertical shaft ducts not supported correctly which split the duct. So i feel its all in the installation process. when you have a poor install we will curse the day duct board was ever made

[Kevin Weaver]

Take a section of galvanized duct, say 20x10, and put on floor.

jump on it, what was the result?

Do same with duct board....

Ahh, it sprung back into place!!

[catmanacman]

Some parts of the country thats all they use ,properly sized and installed it will flow just as much air as sheet metal duct

[ga-hvac-tech]

Personally I do not like it... however as noted it has its places. IMO here are a few places one could use it: When the system is inside the conditioned envelope (like the basement)... and only before the air filter.

[hvacvegas]

I'd rather ductboard in an attic, than wrap duct. But it's only because I HATE WRAPPING DUCT. I don't know what it is. I just hate it.


On a side note:
If you state has adopted the energy conservation code (which kentucky is enforcing in june), your standard 1 1/2" board is no longer code in attics. 3" would be the requirement, due to all duct located in attics needing to be r-8.

I've worked with 3" before. I'd rather wrap duct....

[tlb]

We use ductboard alot.If it is installed correctly it is fine.Staple and tape seams good, strap every 4'.You wont have any problems.Yes,in crawl spaces it can be damaged by rodents etc.Overall imho it makes good duct.

[farbeondriven]

I'd rather ductboard in an attic, than wrap duct. But it's only because I HATE WRAPPING DUCT. I don't know what it is. I just hate it.


On a side note:
If you state has adopted the energy conservation code (which kentucky is enforcing in june), your standard 1 1/2" board is no longer code in attics. 3" would be the requirement, due to all duct located in attics needing to be r-8.

I've worked with 3" before. I'd rather wrap duct....

Do they make 3 inch? I've only used up to 2 inch which is r8.......

Ductboard is all we use around here.....yea I'd like to do sheet metal but we would always get beat out on pricing.......I've found if your gonna use duct board you need to use mastic on any exposed internal edges.......the new lined ductboard is great compare to the unlined.....