Does anyone know any details on the implications of the new Part L
b/regs and cavity walls and for that matter floors and roofs?

I have spoken to a number of BCOs from different authorities and none
seem clear. One mentioned that walls should now have 100mm cavities,
another said that there are other elemets that need more insulation
too. One guy admitted that they were not clear and they were waiting
for guidance documents to be sent to them.

100mm cavities seem way OTT

dg