Gosh. I bet Toughsheet's sales have rocketed since they started their sponsorship. And I have to thank them as I have now added damp proof membrane to the "must buy" section of my shopping list. And in a dramatic rethink of my domestic priorities I have deleted unnecessary purchases like toilet roll, milk and other tedious groceries from said list. Don't worry about me though - at least I will be stocked up on damp proof membrane.....