Brockway Natural Tweed has a published TOG value of 1.43. The underlay TOG it can take and stay under the 2.5 TOG combined limit for underfloor heating.
Updated 05 September 2026.
Brockway Natural Tweed TOG value and underfloor heating
The published Cormar TOG value for Brockway Natural Tweed and the underlay budget it leaves over a heated floor.
Leaves 1.07 TOG of the combined budget for the carpet on top before the 2.5 TOG limit is reached.
| Range | Brockway Natural Tweed |
|---|---|
| Construction | 100% undyed wool tweed |
| TOG rating | 1.43 TOG |
| Max underlay TOG for UFH | 2.07 TOG |
Brockway Natural Tweed is a 100% undyed wool tweed with a published TOG value of 1.43. Natural Tweed is a 100% undyed wool carpet rated 1.43 TOG, a flecked tweed that pairs with underfloor heating alongside a low-TOG underlay.
Using the UHMA rule, in-situ resistance is carpet plus underlay minus 1. To keep Brockway Natural Tweed under the 2.5 TOG limit the underlay must be no more than 2.07 TOG.
TOG measures thermal resistance, so a low number means heat passes through easily. For a floor covering over underfloor heating that is what you want. A comfort underlay chosen for warmth underfoot does the opposite job and is the usual reason a heated floor underperforms after a carpet goes down.
Questions and answers
What is the range of the Brockway Natural Tweed TOG value and underfloor heating?
Brockway Natural Tweed
What is the construction of the Brockway Natural Tweed TOG value and underfloor heating?
100% undyed wool tweed
What is the tog rating of the Brockway Natural Tweed TOG value and underfloor heating?
1.43 TOG
What is the max underlay tog for ufh of the Brockway Natural Tweed TOG value and underfloor heating?
2.07 TOG