Sheet metal quality

Posted by Jack on October 3, 2009, 12:53 pm

Thanks to all re my trunk replacement questions. I can find everything I
need locally or on-line.

Is the gauge of the galvanized steel important? The ductwork is up in the
ceiling and will be wrapped with sheetrock. I saw 26 gauge online for about
$50.00 for a 4 foot 22"x8" section. Is heavier gauge quieter? Is 26gauge
standard?

Also, other than a special tool to cut the takeoffs (which I can rent), is
there anything else I am going to need other than sealant and snips??

Thanks again.

Posted by Tony Hwang on October 3, 2009, 1:40 pm

Jack wrote:

> Thanks to all re my trunk replacement questions. I can find everything
> I need locally or on-line.
>
> Is the gauge of the galvanized steel important? The ductwork is up in
> the ceiling and will be wrapped with sheetrock. I saw 26 gauge online
> for about $50.00 for a 4 foot 22"x8" section. Is heavier gauge quieter?
> Is 26gauge standard?
>
> Also, other than a special tool to cut the takeoffs (which I can rent),
> is there anything else I am going to need other than sealant and snips??
>
> Thanks again.

Hi,
Duct tape(aluminum one) works good.

Posted by John Grabowski on October 3, 2009, 6:23 pm

> Thanks to all re my trunk replacement questions. I can find everything I
> need locally or on-line.
> Is the gauge of the galvanized steel important? The ductwork is up in the
> ceiling and will be wrapped with sheetrock. I saw 26 gauge online for
> about $50.00 for a 4 foot 22"x8" section. Is heavier gauge quieter? Is
> 26gauge standard?
> Also, other than a special tool to cut the takeoffs (which I can rent), is
> there anything else I am going to need other than sealant and snips??

$50.00 sounds high for a short straight duct section. Try several air
conditioning shops and sheet metal places. You may be able to do better and
get longer sections. I think 26 gauge is normal for residential. If you
want quiet you can get duct liner or duct wrap.

In addition to tin snips and aviation snips you will probably also need a
duct crimper. I have also found BX cutting pliers useful for cutting sheet
metal.

Posted by Nate Nagel on October 3, 2009, 6:26 pm

John Grabowski wrote:

>> Thanks to all re my trunk replacement questions. I can find
>> everything I need locally or on-line.
>> Is the gauge of the galvanized steel important? The ductwork is up in
>> the ceiling and will be wrapped with sheetrock. I saw 26 gauge online
>> for about $50.00 for a 4 foot 22"x8" section. Is heavier gauge
>> quieter? Is 26gauge standard?
>> Also, other than a special tool to cut the takeoffs (which I can
>> rent), is there anything else I am going to need other than sealant
>> and snips??

>
>
> $50.00 sounds high for a short straight duct section. Try several air
> conditioning shops and sheet metal places. You may be able to do better
> and get longer sections. I think 26 gauge is normal for residential.
> If you want quiet you can get duct liner or duct wrap.
>
> In addition to tin snips and aviation snips you will probably also need
> a duct crimper. I have also found BX cutting pliers useful for cutting
> sheet metal.

If you can get insulated duct, it will be quieter than non-insulated, if
that is important to you.

nate

--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel

Posted by Jules on October 3, 2009, 10:21 pm

On Sat, 03 Oct 2009 18:23:51 -0400, John Grabowski wrote:

> In addition to tin snips and aviation snips you will probably also need a
> duct crimper. I have also found BX cutting pliers useful for cutting sheet
> metal.

Don't forget duct screws, and maybe some duct sealant, and probably
straps to secure everything in place.

When I re-did some of the stuff we had in the basement, I found that a
metal-cutting blade in a jigsaw did a really neat job - but I agree,
*good* aviation snips are handy to have (mine are stuck in storage
overseas and paying for a second set didn't agree with me :-)

cheers

Jules

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