Stone Polymer Composite (SPC) flooring has become the dominant choice for wet areas and high-traffic spaces across the UK. Here's everything you need to know about specifying, installing and selling SPC to clients.
What Is SPC Flooring?
SPC flooring is a rigid core luxury vinyl tile (LVT) with a stone polymer composite core. Unlike traditional LVT, which has a flexible core, SPC has a rigid, dimensionally stable core that makes it:
- **100% waterproof** — suitable for bathrooms, kitchens, and wet rooms
- **Dimensionally stable** — minimal expansion and contraction with temperature changes
- **Suitable for underfloor heating** — compatible with both electric and water-based systems
- **Highly durable** — resistant to dents, scratches, and heavy foot traffic
SPC vs LVT vs Laminate
| Feature | SPC | LVT | Laminate |
|---------|-----|-----|----------|
| Waterproof | 100% | Mostly | No |
| UFH compatible | Yes | Yes | Limited |
| Rigid core | Yes | No | Yes |
| Suitable for wet areas | Yes | Limited | No |
For bathrooms and kitchens, SPC is the clear specification choice.
Key Specification Criteria
### Wear Layer Thickness
The wear layer is the transparent protective coating on top of the decorative layer. Thicker wear layers = greater durability.
- **0.3mm (12 mil)**: Light residential use
- **0.5mm (20 mil)**: Standard residential — our recommended minimum
- **0.7mm+ (28 mil+)**: Heavy residential and light commercial
### Overall Thickness
SPC flooring typically ranges from 4mm to 8mm. Thicker boards feel more substantial underfoot and provide better sound insulation. 5–6mm is the most common specification for residential projects.
### Underlay
Many SPC boards come with a pre-attached underlay (typically IXPE foam). This simplifies installation and provides additional sound insulation. Check whether your chosen board includes pre-attached underlay before ordering separate underlay.
Installation
SPC flooring uses a click-lock installation system — no adhesive required for floating installations. Key installation points:
- Acclimatise boards for 24–48 hours before installation
- Ensure the subfloor is flat (within 3mm over 1.8m)
- Maintain a 10mm expansion gap around the perimeter
- For underfloor heating, ensure the system is at operating temperature for 7 days before installation, then turned off 24 hours before fitting
Our SPC Range
We stock SPC flooring in a range of wood and stone effects, in plank and tile formats. All boards in our range are suitable for underfloor heating and wet areas. Contact our team for current pricing, samples, and availability.
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