So we have an under the stairs WC but it has no natural light. We are about to fit the stairs and I had a little google... seems we could fit a glazed panel into the floor and give a view down onto the sink and timber shelf as a cheeky little view point whilst not showing off the main event in the room.
does anyone know anything about these? Seems to be 25.5mm think so just layed in on some mastic and carpeted round.