Cormar Malabar Two Fold (1.2 TOG) with Tredaire Sensation (2.89 TOG) gives a combined 3.09 in-situ TOG. Whether that passes the 2.5 TOG underfloor heating limit and what to do.
Updated 05 September 2026.
Cormar Malabar Two Fold and Tredaire Sensation: combined TOG for underfloor heating
The combined TOG for Cormar Malabar Two Fold over Tredaire Sensation, worked against the UHMA underfloor heating rule.
Combined against the UHMA 2.5 TOG underfloor-heating limit. Under 1.5 also suits a low-temperature heat pump.
| Carpet | Cormar Malabar Two Fold (1.2 TOG) |
|---|---|
| Underlay | Tredaire Sensation (2.89 TOG) |
| Published sum | 4.09 TOG |
| UHMA in-situ correction | minus 1 TOG |
| Combined in-situ TOG | 3.09 TOG |
| Standard UFH limit | 2.5 TOG |
| Heat pump target | under 1.5 TOG |
Cormar Malabar Two Fold is rated 1.2 TOG and Tredaire Sensation is rated 2.89 TOG. Laid together the combination is what the underfloor heating has to warm through.
The published TOG figures add to 4.09, and even after the UHMA 1 TOG in-situ correction the pair sits at 3.09 TOG, 0.59 TOG over the limit. The carpet is fine; the underlay is doing the damage. Keep Cormar Malabar Two Fold and drop to a low-TOG underlay such as Duralay Heatflow for Carpet (0.75 TOG) or Duralay Technics 5 (0.56 TOG), which brings the combined figure back into range.
Questions and answers
Cormar Malabar Two Fold and Tredaire Sensation: combined TOG for underfloor heating?
Combined in-situ TOG is 3.09, above the 2.5 TOG limit, so Cormar Malabar Two Fold with Tredaire Sensation is not suitable for underfloor heating. Keep the carpet and switch to a low-TOG underlay.