Extending Ceiling Ducts - Drop Ceiling - HVAC - Contractor Talk

Extending Ceiling Ducts - Drop Ceiling

 
Thread Tools Search this Thread Display Modes
Old 02-13-2020, 04:20 PM   #1
Pro
 
artinall's Avatar
 
Trade: Repairs & Finishing
Join Date: Aug 2007
Location: Ohio
Posts: 1,301
Rewards Points: 478

Extending Ceiling Ducts - Drop Ceiling


A suspended t-bar is going in, means the ducts and covers need to go lower.

Do they make extenders? I've heard they do but can't seem to locate.

Prefer not to drop the assembly on the upper tile for support (insulation between joist, copper running below one, etc).
Attached Thumbnails
Extending Ceiling Ducts - Drop Ceiling-ceiling-vent-2.13.20.jpg  

Last edited by artinall; 02-13-2020 at 04:33 PM.
artinall is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   

Advertisement

 

Old 02-13-2020, 04:26 PM   #2
Fire up the BBQ
 
griz's Avatar
 
Trade: GC
Join Date: Nov 2009
Location: ex-calif
Posts: 22,596
Rewards Points: 606

Re: Extending Ceiling Ducts - Drop Ceiling


The "extenders" you refer to are lengths of duct you cut to length.

Remove the boots, cut duct to length and re-install.

Support the extended boot w/guy wire to the framing.

Advertisement

__________________
SOME JOBS JUST AREN'T WORTH DOING:
griz is offline  
The Following User Says Thank You to griz For This Useful Post:
artinall (02-13-2020)
Old 02-13-2020, 04:35 PM   #3
Pro
 
artinall's Avatar
 
Trade: Repairs & Finishing
Join Date: Aug 2007
Location: Ohio
Posts: 1,301
Rewards Points: 478

Re: Extending Ceiling Ducts - Drop Ceiling


Quote:
Originally Posted by griz View Post
The "extenders" you refer to are lengths of duct you cut to length.

Remove the boots, cut duct to length and re-install.

Support the extended boot w/guy wire to the framing.
I thought the boot outlet is same as standard duct size?

Last edited by artinall; 02-13-2020 at 05:43 PM.
artinall is offline  
Sponsored Links
Advertisement
 
Old 02-13-2020, 04:38 PM   #4
Pro
 
Fishindude's Avatar
 
Trade: Industrial
Join Date: Aug 2017
Location: Indiana
Posts: 517
Rewards Points: 1,108

Re: Extending Ceiling Ducts - Drop Ceiling


It's not uncommon for the final couple feet of duct to the diffuser to be flex duct.
Fishindude is offline  
The Following User Says Thank You to Fishindude For This Useful Post:
artinall (02-13-2020)
Old 02-13-2020, 08:50 PM   #5
Pro
 
beenthere's Avatar
 
Trade: HVAC
Join Date: Mar 2009
Posts: 2,451
Rewards Points: 1,212

Re: Extending Ceiling Ducts - Drop Ceiling


Buy a straight boot/boots, 90 el/els and buy flex duxt/flexible duct connector. Remove boot. Put on 90 El. Run flex from El to New boot.
beenthere is online now  
The Following User Says Thank You to beenthere For This Useful Post:
artinall (02-13-2020)
Old 02-13-2020, 08:51 PM   #6
Pro
 
Big Johnson's Avatar
 
Trade: Contractor Grunt
Join Date: Jun 2017
Location: Michigan
Posts: 4,548
Rewards Points: 864

Re: Extending Ceiling Ducts - Drop Ceiling


Take the 90 boot off, install an elbow and a straight boot.
Big Johnson is online now  
Old 02-13-2020, 08:56 PM   #7
Pro
 
Big Johnson's Avatar
 
Trade: Contractor Grunt
Join Date: Jun 2017
Location: Michigan
Posts: 4,548
Rewards Points: 864

Re: Extending Ceiling Ducts - Drop Ceiling


Looks like bt beat me.

https://www.menards.com/main/heating...72-c-14260.htm


https://www.menards.com/main/heating...17-c-14260.htm
Big Johnson is online now  
Old 02-13-2020, 09:13 PM   #8
Pro
 
artinall's Avatar
 
Trade: Repairs & Finishing
Join Date: Aug 2007
Location: Ohio
Posts: 1,301
Rewards Points: 478

Re: Extending Ceiling Ducts - Drop Ceiling


With the flex duct, what keeps the boot from falling?

Seems like I need a pair of metal rails on tile topside.
artinall is offline  
Old 02-13-2020, 10:58 PM   #9
Pro
 
TheConstruct's Avatar
 
Trade: Carpentry
Join Date: Dec 2017
Location: BC
Posts: 677
Rewards Points: 1,410

Re: Extending Ceiling Ducts - Drop Ceiling


I'd put a rigid elbow on it and then rigid ducting to just above the ceiling tile level. Look for a 5 inch round diffuser which will just spring into the rigid ducting. Trying to keep a grill in the ceiling tile is a losing battle.
TheConstruct is offline  
The Following User Says Thank You to TheConstruct For This Useful Post:
artinall (Yesterday)
Old Yesterday, 06:47 AM   #10
Pro
 
Big Johnson's Avatar
 
Trade: Contractor Grunt
Join Date: Jun 2017
Location: Michigan
Posts: 4,548
Rewards Points: 864

Re: Extending Ceiling Ducts - Drop Ceiling


That would work too but you want 6” and one that closes for the summer.
Big Johnson is online now  
The Following User Says Thank You to Big Johnson For This Useful Post:
artinall (Yesterday)
Old Today, 07:56 AM   #11
Pro
 
beenthere's Avatar
 
Trade: HVAC
Join Date: Mar 2009
Posts: 2,451
Rewards Points: 1,212

Re: Extending Ceiling Ducts - Drop Ceiling


Quote:
Originally Posted by artinall View Post
With the flex duct, what keeps the boot from falling?

Seems like I need a pair of metal rails on tile topside.
Duct ties keep the flex on the El, and the boot on the flex.

You can also make up rails for it if you prefer. Commonl done.

Advertisement

beenthere is online now  


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?