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I have decided to deck my attic. In my attic, there are about 7 T's made with 2x2's a perpendicular 2x4. The 2x2 is connected to the ceiling joist. The 2x4's are about 15" long. The T's are about 6' apart and lift the AC duct above the ceiling joist 6 inches above the ceiling joist. What purpose do these serve? What is the downside of removing them? They are a pain to work around and are a tripping hazzard. My home is in Jacksonville, FL.

Submitted: 57 days and 10 hours ago.

Category: Home Improvement

Value: $9

Status: CLOSED

Make : Ruud
Model : 3 ton

Posted by Rick 57 days and 10 hours ago.

Answer

Hi XXXXXXXXX
If I understand you correctly these T's are only supporting the duct work. If this is the case you could remove them but you will need to support the duct. You could support the duct by hanging it from the rafters with metal straps.

57 days and 10 hours ago.

Reply

The ducts are now laying on the new decking and looks fine. Is it necessary to raise the ducts 6 inches off of the attic deck? If yes, why? Some of the duct was raised off the deck and some was not. What is the downside to the duct laying on the deck?

Accepted Answer

There is no downside to laying the ductwork on the deck provided dropping it 6" doesn't put any strain on the joints in the duct and so long as the ducts are completely wrapped with insulation.

Accepts:
Expert:	Rick
Pos. Feedback:	100.0 %
Answered:	9/28/2009

General C&ontractor

Licensed Construction Supervisor & Remodeling Contractor 35+ years experience

57 days and 10 hours ago.

Reply

They are insulated R-6. So the supports are simply to ensure no strain on the joints?

Joints look fine and air blows fine. I was concerned that the height variation may cause air flow or condensation issue, but I should not be concerned about this if I see no evidence of same, correct? Simply use support to prevent joint stress, correct?

Posted by Rick 57 days and 10 hours ago.

Answer

Yes you need to support the duct to alleviate stress on the joints. If the duct is laid directly on the decking it will compress the insulation but condensation shouldn't be an issue since no ambient air can come in contact with the bottom of the duct and if there is no stress on the joints air flow should not be an issue.

57 days and 10 hours ago.

Reply

Thanks. Closed.

Posted by Rick 57 days and 10 hours ago.

Answer

Thanks for using Just Answer

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Optional Information

Make : Ruud
Model : 3 ton

Answer

Hi XXXXXXXXX
If I understand you correctly these T's are only supporting the duct work. If this is the case you could remove them but you will need to support the duct. You could support the duct by hanging it from the rafters with metal straps.

Reply

The ducts are now laying on the new decking and looks fine. Is it necessary to raise the ducts 6 inches off of the attic deck? If yes, why? Some of the duct was raised off the deck and some was not. What is the downside to the duct laying on the deck?

Accepted Answer

There is no downside to laying the ductwork on the deck provided dropping it 6" doesn't put any strain on the joints in the duct and so long as the ducts are completely wrapped with insulation.

Reply

Answer

Reply

Thanks. Closed.

Answer

Thanks for using Just Answer

Home Improvement

Have your own Home Improvement question?

Related Home-garden Topics:

Question

Optional Information

Make : RuudModel : 3 ton

Answer

Hi XXXXXXXXXIf I understand you correctly these T's are only supporting the duct work. If this is the case you could remove them but you will need to support the duct. You could support the duct by hanging it from the rafters with metal straps.

Reply

The ducts are now laying on the new decking and looks fine. Is it necessary to raise the ducts 6 inches off of the attic deck? If yes, why? Some of the duct was raised off the deck and some was not. What is the downside to the duct laying on the deck?

Accepted Answer

There is no downside to laying the ductwork on the deck provided dropping it 6" doesn't put any strain on the joints in the duct and so long as the ducts are completely wrapped with insulation.

Reply

Answer

Reply

Thanks. Closed.

Answer

Thanks for using Just Answer

Related Home Improvement Questions

Make : Ruud
Model : 3 ton

Hi XXXXXXXXX
If I understand you correctly these T's are only supporting the duct work. If this is the case you could remove them but you will need to support the duct. You could support the duct by hanging it from the rafters with metal straps.