Using Carpets and Underlays with Underfloor Heating
Underfloor heating systems work effectively with carpets and underlays, but it’s important to choose materials with lower combined TOG values to ensure efficient heat transfer. The higher the TOG value of the carpet and underlay, the greater the reduction in heat output from the system.
Key Recommendations:
- The combined TOG value of the carpet and underlay should not exceed 1.5 (published as 2.5 TOG).
- Opt for underlays with a TOG value of less than 1, such as those from reputable brands like Duralay and Floorwise.
- Avoid dense felt or heavy crumb underlays, as they can impede heat flow.
- Be cautious with thick wool carpets, as they may have high TOG values.
- Always check the manufacturer’s technical data and follow their installation guidelines.
Additional Tips:
- For screed floors, ensure the screed is fully dry before laying the carpet.
- On wooden sub-floors, allow adequate time for the wood to condition and stabilize while the underfloor heating is running to prevent inconsistencies caused by moisture changes.
General Advice:
While carpets and rugs can be used with underfloor heating, they are natural insulators and may resist heat transfer if not chosen carefully. Always consult your supplier to confirm their product’s suitability for underfloor heating. For reference, Persian rugs typically have a TOG rating of around 1.9.
Underfloor Heating Energy Efficiency
Radiator systems are the modern-day counterpart to traditional fireplaces. They rely on your boiler or heat pump to deliver hot water at temperatures between 60 and 80 degrees Celsius, enabling them to radiate heat into the room.
In contrast, water-based underfloor heating operates differently. Imagine a massive radiator seamlessly spread across your entire floor. This system covers the full floor area, allowing it to efficiently distribute heat using much lower water temperatures, typically between 35 and 45 degrees Celsius. This makes underfloor heating a top choice for energy efficiency and sustainability.
Underfloor Heating
Cut down on heating costs, manage your comfort, and future-proof your home.