Duct jointing coumpound

[Perfectionist]

I will be removing ducting on a warm air system. and then replacing it. Can someone tell me the type of duct jointing compound used? Is it high temperature silicon? Is it a special compound? Is is available from the likes of Screwfix?

Thanks in advance.

 

[PRS1]

post in combustion chamber for answer!
Cant belive anyone whos competant would ask that!

 

[Perfectionist]

post in combustion chamber for answer!
Cant belive anyone whos competant would ask that!

I am removing ducting and replacing it back where it came from. It is nothing related to combustion. It is simply jointing the ducting. The air system has no combustion near it. It is heated via a copper coil.

I am more than competent to fit ducting. I need to know the compound used. Someone incompetent would use cheap silicon. I find out the proper stuff, that is why I asked.

 

[Terrywookfit]

Duct tape might work.

 

[Perfectionist]

Duct tape might work.

I am removing the copper coil unit to do work behind. It sits on a duct plenum chamber and this would need a bead of compound between the unit and the duct plenum chamber.

On normal ducting, duct tape is the normal way of doing it as long as it is well secured. Not in this case. I just looked at BES. They have high temperature silicon. I am not sure If these are suitable for an air system.

http://www.bes.co.uk/products/215.asp

 

[simond]

We use a high temp silicon for some makes of condensing boilers made by GE.

I don't see any reason why this shouldn't be OK for warm air, as previously said, most just use the appropriately named duct tape and a handful of rivets.

We now get all our ductwork made up and installed by a specialist, they do use a sealant sometimes but I don't now what it is.

 

[Perfectionist]

What do you seal on the the condensing boilers made by GE? Who are GE?

As ducting has air that people breath I do not want sealant that off-gases. So it is best I find out first.

 

[Biggles..]

why not try grey duct seal sealant by dow corning or galvamate, both are applicable and normally used for spiral wound ducting etc plus tek screws.

 

[Perfectionist]

Thanks.