On 03/09/2019 11:58, The Natural Philosopher wrote:
On 03/09/2019 11:55, Tim Lamb wrote:
I expect current building regs. will require more than 25mm foam.

The tragedy is that they will. Thus preventing many people from
improving insulation.

It can be worth talking with your local BCO though since they will often
accept a less than ideal improvement if its the best that can be done in
the circumstances.



--
Cheers,

John.

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