I am currently doing a loft conversion and have read up on all the regulations etc. I was just wondering if anybody has experience of building control and how strict they are?For example everything has a target thermal insulation but how strict are they at imposing it?

My headroom in the loft room will be 6'11" ish but if i stuck to the regulations exactly then it wld have to reduce to 6'9" to get all the insulation and full ventilation gaps in. My dad has done plenty of extensions in the past and never bothered with all the insulation and always been signed off. However the last one he did was about 4 years ago and things may have changed since then.

Cheers