Daughter and partner are about to have the lounge re-carpeted.
They have these under floor warm air heating vents which are no longer in use.
Carpet people said put some expanding foam down then cover it with cement.
I imagine you would start with some newspaper unless you wanted to fill the under floor void :-)
So - has anyone done this and does it work O.K.?
The vents are not of the best and it is likely to be a pain fitting the carpet around them as the sides are on the way out.
Cheers
Dave R