Cavity wall insulation and EPCs

Swipe

Roger Bisby from Skillbuilder has done a few vids on cavity wall insulation but I think this is his best one:

https://www.youtube.com/watch?v=_18ua68n39U

HillStreetBlues

MWT said:

FWIW, our house was a new build in 1987, and was built with polystyrene bead insulation from new and has been perfect in all respects. 

Nothing inherently wrong with them as an insulation method if designed for it.

My last bungalow build in the late 60's  had beads insulation in 2010,  in the 13 years I was there not a sign of any damp anywhere. My current 70's bungalow also has them don't know when installed but also not a sign of damp anywhere.

Bilivino

MWT said:

rowan_bradley said:

I recently moved house into an end of terrace built in 1986, standard brick construction. The EPC said it needed to have cavity wall insulation. I had someone come and check it. He drilled a hole and pulled out some insulation. It looked like glass wool to me.

The way the EPC process works, if there is no visible evidence of cavity wall insulation and you have no documentation to prove it exists then it goes down as not having it even if it does.

You now have evidence that there is cavity wall insulation...

No, what’s happened here is the assessor has entered an incorrect construction dateband for the property. Assuming England & Wales (Scottish dates may differ by a year or two) a construction dateband of 1983 onwards would have resulted in the assumption of a full filled cavity as that was by then the prevalent construction method used to meet minimum building regs for energy performance.