Posted by. Adam S As title, I have used some of this 30m2 roll to tile a floor which is approx 6m2, then chose a different solution for my other bathrooms so didn't need so much! Location Saint Ann's Hill, London, Greater London, SW18 2SB what3words More from this sellerWunda Between Joist Underfloor Heating Panels3 x Knauf Aquapanel Tile backer cement boards watch this item contact the seller Share this post