Description
Upgrade your home comfort with the Sunstone RF-4 Loose Wire Underfloor Heating System, a high-performance electric heating cable solution designed to efficiently heat areas up to 4m².
Perfect for bathrooms, kitchens, wet rooms, conservatories, and awkward-shaped spaces, the loose wire configuration allows complete installation flexibility around fixtures, corners, and irregular room layouts where standard heating mats may not fit effectively.
The RF-4 system delivers an efficient 150W/m² heat output at 80mm cable spacing, providing fast and consistent floor warming beneath porcelain, ceramic, stone, and tiled surfaces. Designed using durable dual-core multi-strand heating technology, the cable offers reliable long-term performance while maintaining low energy consumption and even heat distribution.
Its slim approximately 3.2mm cable thickness minimises floor build-up, making it ideal for renovation projects and modern interior installations. The advanced ETFE/PVC insulation and IPX7 protection rating ensure high durability and moisture resistance, making the system especially suitable for bathrooms and wet environments.
The Sunstone RF-4 loose wire system is compatible with programmable thermostats, allowing precise temperature control, energy savings, and enhanced comfort throughout the year.
Whether installed in residential or commercial projects, Sunstone delivers professional-quality underfloor heating performance with simple installation flexibility.
Available now at Laporsa.
Specifications
| Specification | Details |
|---|---|
| Product Name | Sunstone Loose Wire System RF-4 |
| Coverage Area | 4m² |
| Product Code | RF-4 |
| Cable Length | 50m |
| Power Output | 600W |
| Heat Output | 150W/m² |
| Operating Voltage | 230V AC – 50Hz |
| Current | 2.61A |
| Cable Thickness | Approx. 3.2mm |
| Heating Element | Dual Core Multi-Strand |
| Inner / Outer Insulation | ETFE / PVC |
| IP Rating | IPX7 |
| Earth Type | Functional Earth |
| Coldtail Connection | 3.0m |
| Coldtail Size | 2C x 0.75mm² |
| Minimum Installation Temperature | -10°C |
| Recommended Spacing | 80mm |
| Floor Compatibility | Tile, Porcelain, Ceramic, Stone |
| Installation Type | Loose Wire System |
| Application | Indoor |
| Warranty | Manufacturer Warranty |
Key Features
- Covers areas up to 4m²
- Flexible loose wire installation
- Perfect for irregular room layouts
- Energy-efficient electric floor heating
- Powerful 150W/m² heat output
- Slim 3.2mm cable profile
- Suitable for tiled floors
- Ideal for bathrooms and wet rooms
- Dual-core heating technology
- IPX7 moisture protection
- Compatible with programmable thermostats
- Professional-grade underfloor heating system
- Even heat distribution
- Low floor build-up installation
- Reliable long-term performance
Recommended Applications
- Bathrooms
- Wet rooms
- Kitchens
- Conservatories
- Hallways
- Porcelain tiled floors
- Ceramic tiled floors
- Stone floors
- Renovation projects
- Residential heating
- Commercial interiors
Compatible Floor Types
- Porcelain tiles
- Ceramic tiles
- Natural stone
- Marble
- Slate
- Quarry tiles
Installation Benefits
The loose wire design allows installers to:
- Adjust cable spacing freely
- Heat awkward spaces efficiently
- Install around toilets and furniture
- Maximise floor coverage
- Reduce cold spots
- Customise layouts for any room shape
