Semi-split pipe insulation (or non-split)?

[Possom]

If installing new internal copper piping then it would be possible to simply slide non-split insulation over it before installing and soldering.

However, perhaps soldering an already insulated copper pipe is a possible fire hazard, therefore meaning that semi-split insulation should be added after the piping has been installed and soldered?

Was wondering what comments were on whether to use non-split or semi-split insulation? Thanks!

 

[bernardgreen]

would be possible to simply slide non-split insulation over it before installing and soldering.

Yes, but leave about 18 inches ( for 15mm pipe ) un-insulated at the ends where you will be soldering. Then, when soldered and cooled, fit split insulation onto the soldered joints.

 

[muggles]

Insulate once everything is filled and tested. I use Armaflex Self Seal