Two final questions : is the Minister aware that the nine-inch cavity block used in construction at present, in the context of insulation, is banned in Britain and is most unsatisfactory from the point of view of house-building here?

That is a separate question surely.

It has to do with insulation. But if the Minister is afraid or unwilling to answer it, I will have to ask a separate question.

If the Deputy puts down a question about nine-inch blocks I will willingly answer it.

I asked the Minister about the standard of insulation in home-building; that is basic to it.

If the Deputy wants me to answer a question on nine-inch blocks he should put down a question and I will answer it.