(
Dr Moore) There is a certain amount of lack of clarity as to whether an overcladding system is covered by the Regulations[
3], or whether it is a refurbishment activity which is outside the Regulations[
4]. I think this is unclear to us as experts. There may be a difference in what goes on between the Scottish situation and that in England and Wales. Again, I think there is insufficient clarity.
Our colleague from the Fire Brigades Union did not mention there may be a need for cavity barriers to stop fire going behind an overcladding system; because that is one of the areas which is a very common method of fire to spread, where the fire travels up the inside of the cavity; you should put in some form of barrier to stop this, and I think that should be clarified. The other area, which is perhaps pertinent to this particular fire, was the fact that the window frames I believe actually melted and allowed the fire to go in via that route. I think it should be made abundantly clear that window frames should be protected from the fire going up through the cavity or from the outside. I think there is not sufficient, as I see it, in the Regulations[
5] specifying how you should fire-protect the window areas.