Description
ThermoSphere Cushioning Underlay is a 5mm board laid beneath ThermoSphere Heating Foil as a mandatory part of the dry-lay floor build-up, protecting the foil and cables while improving underfoot comfort.
Key Benefits
- 5mm cushioning board, 1.2m x 0.5m per board
- Protects the heating foil and cables from wear underfoot
- Improves the feel of the finished floor
- Mandatory component of every ThermoSphere Heating Foil installation
- Available as a single 0.6m² board or a pack of 10 boards (6m²)
Applications
Used beneath ThermoSphere Heating Foil in every dry-lay installation under wood, carpet or vinyl floor finishes.
Performance & Features
Laid directly beneath the heating foil, the cushioning underlay forms part of the standard ThermoSphere Foil floor build-up alongside the cushioning overlay above the foil.
Compatibility
Designed for use with the ThermoSphere Heating Foil (WCVF-140) range and the ThermoSphere Cushioning Overlay.
Supplied by Millcot as part of our full ThermoSphere underfloor heating range.
Downloads
- ThermoSphere Heating Foil Data Sheet (PDF)
- ThermoSphere Heating Foil Installation Instructions (PDF)
FAQs
Is this underlay mandatory with the foil kit?
Yes, cushioning underlay is a mandatory part of every ThermoSphere Heating Foil installation.
How many boards do I need?
Calculate boards based on your total floor area — each board covers 0.6m², or buy the pack of 10 for 6m² coverage.
Does this replace the overlay board?
No, the overlay is a separate layer fitted above the foil — both underlay and overlay are needed.