Insulating 10mm pipe

[Kes]

I have about 50' of 10mm c/h naked copper pipework in the cellar which should be insulated. I can't see any 10mm foam stuff in B&Q (and the rolls of felt seem to be long gone). Does everyone use the 15mm foam insulation? I have seen 10mm insulation in long lengths advertised on ebay, as used on fridges, is this any good (can't remember the name at the mo, something like Armourflex)?

Rgds.

 

[WDIK]

you answered your own question

 

[Nige F]

Armaflex.....must have a website they do from 10mm to massive sheets of the stuff for calorifiers etc.

 

[htgeng]

(and the rolls of felt seem to be long gone).

The felt is about as good as the naked pipes, as you put it! Plus its a fire hazard. Set light to a few metres of it outside to see what I mean.

If the pipes are close together I would use single 22mm and wrap that over both pipes.

 

[D_Hailsham]

I remember reading some time ago that, in some cases, insulation is worse than no insulation. This is because the addition of the insulation increases the surface area exposed to the air so much that more heat is lost from the surface of the insulation than would be lost from the surface of the uninsulated pipe.

Maybe that is why Knauff (Crown Insulation) do not manufacture insulation for 10mm pipes and none of the DIY sheds sell it.

Don't forget that insulating aircon pipes is for a completely different purpose.

 

[htgeng]

I remember reading some time ago that, in some cases, insulation is worse than no insulation. This is because the addition of the insulation increases the surface area exposed to the air so much that more heat is lost from the surface of the insulation than would be lost from the surface of the uninsulated pipe..

That sounds like something that would be published in the DIY column of the Saturday Telegraph.

 

[blondini]

http://www.pipelagging.com/10mm-pipe-insulation-tl1013dg-p-718.html

 

[Kes]

That's the stuff, cheers. It's a pity the postage is more than the insulation, though.

Rgds.

 

[ChrisR]

Hows about product 14928 here ?