Brockway Solar has a published TOG value of 1.56. The underlay TOG it can take and stay under the 2.5 TOG combined limit for underfloor heating.
Updated 05 September 2026.
Brockway Solar TOG value and underfloor heating
The published Cormar TOG value for Brockway Solar and the underlay budget it leaves over a heated floor.
Leaves 0.94 TOG of the combined budget for the carpet on top before the 2.5 TOG limit is reached.
| Range | Brockway Solar |
|---|---|
| Construction | 80% wool, 20% nylon twist |
| TOG rating | 1.56 TOG |
| Max underlay TOG for UFH | 1.94 TOG |
Brockway Solar is a 80% wool, 20% nylon twist with a published TOG value of 1.56. Solar is an 80% wool, 20% nylon twist rated 1.56 TOG. The nylon content adds durability, and a low-TOG underlay is needed to clear the combined limit over a heated floor.
Using the UHMA rule, in-situ resistance is carpet plus underlay minus 1. To keep Brockway Solar under the 2.5 TOG limit the underlay must be no more than 1.94 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 Solar TOG value and underfloor heating?
Brockway Solar
What is the construction of the Brockway Solar TOG value and underfloor heating?
80% wool, 20% nylon twist
What is the tog rating of the Brockway Solar TOG value and underfloor heating?
1.56 TOG
What is the max underlay tog for ufh of the Brockway Solar TOG value and underfloor heating?
1.94 TOG