heater exhaust lagging - wrap or sleeve

[dunkelly]

Any suggestions as to how how best to use heater exhaust insulation . should i wrap it overlap style or put it on as a sleeve? . is there any heat resistant tape that anybody knows of the hold it in place ?

 

[pvb]

A neat solution is to use the tubular lagging, then enclose it in a length of suitably-sized hot air ducting.

 

[dunkelly]

sorry should have said it is the tubular lagging i have, so can do either , just felt the wrap method although uses much more lagging might be better than tubular with a cover but this would need to be held in place with tape or something like ss seizing wire.

 

[pvb]

sorry should have said it is the tubular lagging i have, so can do either , just felt the wrap method although uses much more lagging might be better than tubular with a cover but this would need to be held in place with tape or something like ss seizing wire.

Use the tubular lagging, threaded over the exhaust pipe, secure both ends with wire, stick the whole lot in a length of smallish-diameter heater ducting. It will look neat, be well insulated, stay clean.

 

[Kelpie]

I used a continuous length of lagging wrap, spiralled around the exhaust hose. Monel seizing wire used to tie it at suitable intervals.
A tubular sleeve would have been easier but maybe have looked a bit less neat?

There is an argument that enclosing the whole thing in another layer of ducting prevents you from spotting any problems (a leaking exhaust should be visible by staining on the lagging) but tbh that's probably a bit paranoid.

 

[jiris]

Any suggestions as to how how best to use heater exhaust insulation . should i wrap it overlap style or put it on as a sleeve? . is there any heat resistant tape that anybody knows of the hold it in place ?

A silicone (or Teflon?) tape known as "Rescue Tape" would do the job. Used it for this purpose myself.

 

[nicappotamus 2]

A neat solution is to use the tubular lagging, then enclose it in a length of suitably-sized hot air ducting.

that's what I did

still feels hot on the outside but not likely to melt too many things. I will eventually get around to boxing it in so I don't have to be so careful putting things into the locker

 

[dunkelly]

never used rescue tape is it really ok for wrapping an exhaust ?

 

[Hot Property]

I used this wrap to insulate my new diesel heater exhaust and silencer. It came with half a dozen stainless steel tie wraps making it easy to start the wrapping and then fixing it once all wrapped around.

I then put intermediate tie wraps along the pipe to add more security. Works really well but wear gloves when handling it!!!!

https://www.ebay.co.uk/itm/RTG-HEAV...STEEL-CLIPS-/221663430745?hash=item339c2b8859

 

[jiris]

never used rescue tape is it really ok for wrapping an exhaust ?

I don't think I would try it on engine exhaust. Heater is a different story. Th exhaust temperature is quite low - I measured it on mine (infrared thermometer) and it fluctuated with power from 100 to 150 dg C. Teflon starts to deteriorate after 260 dg. A generous margin there. Not sure about silicon products, but probably similar.