What's the regulation pipe insulation in an unheated loft space?

[WillC1423]

As in the title - What's the required insulation under building regs for heating pipes in the unheated loft space within a residential building? I can't seem to find any clear-cut answers.

 

[denso13]

Search for bylaw 49 complaint pipe insulation, that'll show the required thickness.

 

[Madrab]

Use good quality - I use Armaflex 19mm - insulation, also run it under the loft insulation if possible. Watch for rodents, they love to chew on all that stuff.

 

[WillC1423]

Can anyone point me to the section of the building regs that details the required water pipe insulation performance as I can't seem to find it? It would help out with a dispute. Many thanks.

 

[Madrab]

It's normally under bylaw 49 legislation, which is local government/council law, as long as it's been implemented in your council area properly. Contact the local council build control and ask them

 

[denso13]

Can anyone point me to the section of the building regs that details the required water pipe insulation performance

Nothing in the building regs about it, see answer #2.

 

[WillC1423]

Nothing in the building regs about it, see answer #2.

I need something in writing that specifies the requirement. Building control has signed off on what I believe is non-compliant insulation. The builder says "It's fine, it's been signed off". The local authority building control has told me to complain to CICAIR, but before I do that I'd like to confirm I'm in the right.

 

[stem]

I looked into this once when building an extension on my home and found these. One is manufacturer specific, so I guess it will change depending on the manufacturers product performance. Unfortunately I can't remember where I found the info.