Richduct brand - sprial solo cardboard type duct work


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Old 03-29-07, 07:15 PM
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Richduct brand - sprial solo cardboard type duct work

Came across this today in a 45 year old house in Oklahoma City. Cold air return in the attic was cardboard (I think) round 14" solo type piping/ductwork. Had no insulation on it and seemed to have a black tarish look to the outside of it. Then on top of that coating was printed all over it Richduct, Richkraft Co., Chicago, IL.

It looked like those round yellow concrete pour forms that are sprialed (like a spring sprial) cardboard tubes. The tubs are 14- 16 feet long. It seems to be only 1/4 inch or slightly less thick walled.

This houe is 45 years old and was back then a upper high class home and area.

I have never seen anything like this for ductwork.

Does anyone know anything about this type. Is it cardboard or maybe asbestos material. I need to find that out before I remove any of it.
 
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Old 03-29-07, 08:16 PM
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Wink

I dont know why that was up in your attic. That was made for a time to go down in or under a slab. You had to look out some guys would cut it and later on if you didnt seal the end of it . After a year or so it would like start to unwrap in side the pipe and block the air. We now have the same thing for under the slab . But its all plastic now works real good. Its cardboard
 
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Old 03-29-07, 09:08 PM
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The house is on slab with the ducts in the ground. Maybe they just used some of it to do the attic cold air return too.

Any other thought on it being used for cold air return in the attic?

Is it just cardboard?
 
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Old 03-29-07, 09:17 PM
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I think they just had it left over from the slab and used it up there.
its just cardboard?
 
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Old 03-30-07, 04:33 AM
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The black mastic is most likely A asbestos the tube should be cardboard.
 
 

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