The hvac supply ducts in my attic are insulated and have a black cover.
The ducts in the basement have a silver cover. Is this normal? Or
does it matter? I would have thought that the black covered insulation
in the attic would absorb attic heat and increase the temperature of
the air supply.

-Jim

Is it Flex duct?


"Jim" wrote in message
oups.com...
The hvac supply ducts in my attic are insulated and have a black cover.
The ducts in the basement have a silver cover. Is this normal? Or
does it matter? I would have thought that the black covered insulation
in the attic would absorb attic heat and increase the temperature of
the air supply.

-Jim

Yes.

"Jim" wrote in message
ups.com...
Yes.


Some flex has got a plastic vapor barrier and some has a metalized
barrier....

Would one be preferred in an attic over the other?

Thanks for replying.

-Jim

Jim wrote:

Would one be preferred in an attic over the other?

Thanks for replying.

Flex duct is not to be preferred period. But to answer your question:
It's the R value that matters, not the color.

hvacrmedic

"Jim" wrote in message
oups.com...
Would one be preferred in an attic over the other?

Thanks for replying.

-Jim


This is Turtle

if I was going to use Flex Duct. It would be the Black for it is made to be sun
resistant and not crack or fall a part like the silver will in sun light.

TURTLE

"Jim" wrote in message
oups.com...
Would one be preferred in an attic over the other?

Thanks for replying.

-Jim


Stretch and RP answered before I could and their answers were the same mine
would have been.

I don't really care for flex because of the way it's usually run. It also
has a higher resistance than the same size hard pipe.

"Jim" wrote in message

The hvac supply ducts in my attic are insulated and have a black
cover.
The ducts in the basement have a silver cover. Is this normal? Or
does it matter? I would have thought that the black covered
insulation
in the attic would absorb attic heat and increase the temperature of
the air supply.

Timely question. I wanted to insulate the ducts in my garage. Have
seen the black, but wondered it it's just garbage bags or sheet
plastic stapled over normal attic fiberglass R11 or similar.

Anyone have a suggestion on what to use? Mine are normal galvanized
ducts, some rectangular and some round.

Local Home Depot looks at me funny, when I ask about it.

Rich