Lagging for large pipes

TheGreenFrog

I have an old oil boiler.  The water pipes are large diameter, about 10cms, and the lagging has perished.  It looks like some sort of fibre lagging but I am not sure whether it is still available or whether there is something more modern/better?  Screwfix and Toolstation only seem to have some sort of bubblewrap.

molerat

100mm / 4" really ?

100mm sleeving is available from commercial suppliers, it is not something the DIY sheds stock.  Not cheap though so the wrapping type is probably your best option, maybe a couple of layers if necessary.  You can get fibreglass or bubblewrap types.  The Screwfix bubblewrap is supposed to be equivalent to 33mm of polystyrene

grumbler

10cm?! No chance. Sewage pipes are 11cm.

TheGreenFrog

I did not measure it - just guessed and I am evidently not a good judge of pipe size!  Just measured it with some calipers and it is 6cm

Rodders53

https://justthejobsupplies.co.uk/products/60mm-pipe-insulation-foam-climaflex-2m-lengths

https://www.pipelagging.com/pipe-insulation/armaflex-pipe-insulation-lagging-black-nitrile-foam-class-o-2m-60mm-19mm-wall

Odd as I can't find 60mm dia pipe to be a common/standard size.  Rather large - must be a mansion heating system.

Section62

TheGreenFrog said:

I have an old oil boiler.  The water pipes are large diameter, about 10cms, and the lagging has perished.  It looks like some sort of fibre lagging but I am not sure whether it is still available or whether there is something more modern/better?  Screwfix and Toolstation only seem to have some sort of bubblewrap.

Larger diameter pipes were frequently lagged with asbestos-containing materials, often with high asbestos content, and are one of the more common examples of where brown or blue asbestos can be found in buildings.

Don't go poking it around (or attempting to remove it) before you've been able to confirm what it is.

TheGreenFrog

Section62 said:

TheGreenFrog said:

I have an old oil boiler.  The water pipes are large diameter, about 10cms, and the lagging has perished.  It looks like some sort of fibre lagging but I am not sure whether it is still available or whether there is something more modern/better?  Screwfix and Toolstation only seem to have some sort of bubblewrap.

Larger diameter pipes were frequently lagged with asbestos-containing materials, often with high asbestos content, and are one of the more common examples of where brown or blue asbestos can be found in buildings.

Don't go poking it around (or attempting to remove it) before you've been able to confirm what it is.

Picture attached.  Don't know what it is but does not look like asbestos (or at least the stuff I have seen) 

FreeBear

Rodders53 said:

https://justthejobsupplies.co.uk/products/60mm-pipe-insulation-foam-climaflex-2m-lengths

https://www.pipelagging.com/pipe-insulation/armaflex-pipe-insulation-lagging-black-nitrile-foam-class-o-2m-60mm-19mm-wall

Odd as I can't find 60mm dia pipe to be a common/standard size.  Rather large - must be a mansion heating system.

A couple of others..

https://pipelaggingonline.com/shop/glasswool-pipe-insulation-foil-faced-1-2m-lengths/

https://pipelaggingonline.com/shop/rock-lap-foil-face-pipe-insulation-1m-lengths/

Both available in different wall thicknesses and diameters. Not cheap though.

stuart45

TheGreenFrog said:

Section62 said:

TheGreenFrog said:

I have an old oil boiler.  The water pipes are large diameter, about 10cms, and the lagging has perished.  It looks like some sort of fibre lagging but I am not sure whether it is still available or whether there is something more modern/better?  Screwfix and Toolstation only seem to have some sort of bubblewrap.

Larger diameter pipes were frequently lagged with asbestos-containing materials, often with high asbestos content, and are one of the more common examples of where brown or blue asbestos can be found in buildings.

Don't go poking it around (or attempting to remove it) before you've been able to confirm what it is.

Picture attached.  Don't know what it is but does not look like asbestos (or at least the stuff I have seen) 

You need to get it tested. 

grumbler

No, it's not asbestos. And there is no point in adding asbestos to this sort of insulation.

Section62

grumbler said:

No, it's not asbestos. And there is no point in adding asbestos to this sort of insulation.

You have no idea, you can't exclude the possibility of asbestos content just by looking at a picture.

Asbestos was added to all kinds of materials, and not necessarily because it made sense.

In this particular case it would be the paper-type material I'd have the greater concern over.