Carpet Underlay Shop - There are many things to consider when you decide you want underfloor heating fitted in your house. The tog rating of your carpet AND underlay together should be
Ball and Young Cloud 9 Radiance 6mm Underlay (Low Tog -15m2 Bag)
10mm Thick - Wool Rich Felt Carpet Underlay
Understanding TOG Ratings for Carpets - Flooring Blog