Underlay tog values and warmth
Underlay tog rating measures thermal insulation, and a higher tog underlay gives a warmer, softer feel underfoot in a bedroom, which most households value more here than in busier parts of the house.
- Higher tog underlay (2.5 to 4.5 or more) suits bedrooms where warmth and comfort are the priority
- Combined tog of carpet and underlay should stay within the manufacturer's recommended limit, particularly over underfloor heating
- An acoustic-rated underlay is worth specifying in upstairs bedrooms above living spaces to cut down on transferred footstep noise


