Short answer: Lignum Core is our own-label waterproof flooring range — SPC (stone plastic composite) planks and tiles built for the rooms where laminate and engineered wood can’t go. Bathrooms, utility rooms, kitchens with dogs and small kids, wet zones near back doors. Ten designs across two formats: waterproof oak herringbone planks and stone-look slate tiles. Priced around £29/m², waterproof-rated by construction (not by coating), and easier to fit than tile or vinyl. This guide walks through what SPC actually is, where Lignum Core fits, and where you’d choose something else.
We built the Lignum Core range because the “waterproof laminate” market was full of confusion — some brands using waterproof coatings on standard laminate cores, others charging engineered-wood money for genuine SPC. We wanted a range where the waterproofing was structural, the pricing was honest, and the click system was reliable. Take that context on board — Lignum Core is our answer to that brief.
What SPC actually is
SPC stands for Stone Plastic Composite. The core is a rigid mineral composite — powdered natural limestone bound with PVC and stabilisers — pressed into a dense board that doesn’t absorb water, doesn’t swell, and doesn’t warp under thermal cycling. On top of the SPC core sits a decorative print layer (the visible design) and a clear wear layer (usually 0.3mm to 0.5mm thick) that carries the scratch and stain resistance.
The key thing that makes SPC different from LVT (luxury vinyl tile) is rigidity. LVT is flexible — you can bend a plank in your hands. SPC is rigid — it holds its shape under load and hides more subfloor imperfections than any other floating floor material. That rigidity is why SPC is often called “rigid vinyl” in the trade, and it’s the reason SPC installs faster and more forgivingly than LVT.
The waterproofing is structural, not surface. Both the core and the wear layer are non-porous — water can sit on the floor for hours without penetrating. That’s genuinely different from “water-resistant” laminate, which relies on a wax coating at the joints that wears off over time.
The Lignum Core range at a glance
Ten designs across two formats:
Waterproof oak herringbone (7 designs) — the same herringbone architectural look as the Fusion Premium range, but on a waterproof SPC core so it can go in bathrooms and utility rooms:
- Linen Oak Herringbone
- Mocha Oak Herringbone
- Ranch Oak Herringbone
- Rustic Oak Herringbone
- Sahara Oak Herringbone
- Seashell Oak Herringbone
- Truffle Oak Herringbone
Stone-look slate tile (3 designs) — square tiles for a real-tile-look bathroom or kitchen floor without the grouting, cold underfoot, or specialist fitter:
- Charcoal Slate
- Light Grey Slate
- Beige Slate
Herringbone planks are £28.99/m² (was £30.99). Slate tiles are £28.99/m² (was £32.99). Both use the same click-lock SPC construction, both carry the same warranty, both are waterproof-rated.
Where Lignum Core works
Bathrooms. The single strongest use case. Fully waterproof by construction — standing water from a shower splash, a bath overflow, or a leaking radiator won’t damage the floor. Runs under the door threshold without a bar. The slate tile designs give you a real-tile look without the cold-underfoot problem.
Utility rooms, boot rooms, back kitchens. Same waterproof story. The rooms where laminate would eventually fail and engineered wood would need a rug in front of every appliance. Wet coats, muddy dogs, washing-machine floods — all fine.
Family kitchens. Excellent. The rigidity handles rolling appliances (fridge on wheels, dishwasher pull-out) better than laminate, and the waterproof rating means you don’t panic when a glass spills at the sink.
Living rooms and hallways. Fine, and the herringbone designs give you a similar architectural look to Fusion Premium at similar money. Choose Lignum Core if the room’s use case shades toward “there might be water occasionally” (open-plan kitchen-diner, hallway near an entrance from the garden).
Conservatories. Yes — SPC is much more stable under thermal cycling than laminate. It’s the flooring we’d pick for a conservatory if the budget allows.
Over underfloor heating. Compatible with a UFH-rated underlay (thermal resistance no higher than 0.15 m²K/W) and a surface temperature cap of 27°C.
Where you’d choose something else
You want the warmest possible feel underfoot. Real engineered wood or solid parquet still wins on tactile warmth. SPC is neutral to slightly cool — better than tile, colder than wood.
You want a floor you can sand and refinish decades later. SPC is a replace-not-refinish material. When it eventually wears out (10 to 25 years depending on traffic), you pull it up and lay a new floor. Engineered wood can be sanded twice, real solid oak five to eight times.
You’re on the tightest budget. Standard laminate is £15 to £22/m². SPC is £26 to £45/m². If the room doesn’t need waterproofing, the laminate saving is real.
Technical specs
| Spec | Lignum Core Herringbone | Lignum Core Slate Tile |
|---|---|---|
| Thickness | 6mm (5mm SPC core + 1mm pre-attached underlay) | 6mm (5mm SPC core + 1mm pre-attached underlay) |
| Core | Stone Plastic Composite (rigid, waterproof) | Stone Plastic Composite (rigid, waterproof) |
| Wear layer | 0.4mm commercial-grade | 0.4mm commercial-grade |
| Water resistance | 100% waterproof (structural) | 100% waterproof (structural) |
| Board / tile dimensions | Short parquet plank (herringbone) | Square tile |
| Locking system | Click-lock, four-sided | Click-lock, four-sided |
| Warranty (residential) | 25 years including waterproof warranty | 25 years including waterproof warranty |
| Underfloor heating | Compatible (max 27°C surface) | Compatible (max 27°C surface) |
| Underlay required | Pre-attached (no separate underlay) | Pre-attached (no separate underlay) |
| Install method | Floating, click, no glue | Floating, click, no glue |
Lignum Core vs the alternatives
| Property | Lignum Core (SPC) | Traditional LVT | Ceramic / porcelain tile | Waterproof laminate |
|---|---|---|---|---|
| Waterproof | Yes (structural) | Yes (structural) | Yes with sealed grout | Yes (surface + wax joints) |
| Rigidity | Rigid (best for uneven subfloors) | Flexible | Rigid | Semi-rigid |
| Feel underfoot | Neutral to slightly cool | Softer, warmer | Cold — needs UFH | Neutral |
| Install complexity | Click-lock, DIY-friendly | Click or glue-down | Specialist, wet trade | Click-lock, DIY-friendly |
| Grout maintenance | None | None | Annual regrouting eventually | None |
| Fits under existing door threshold | Yes (6mm profile) | Yes | Rarely — too thick | Yes (8mm profile) |
| Typical price per m² | £26 to £35 | £25 to £45 | £20 to £80 + fitting | £22 to £30 |
| Best for | Bathrooms, wet zones, DIY installs | Quieter rooms, warmer feel | Real tile look, no compromise | Kitchens, splash zones |
What people actually ask us
Is SPC flooring the same as LVT?
No, though they’re related. Both are vinyl-based waterproof flooring. LVT is flexible — the plank bends in your hands. SPC is rigid — the plank holds its shape under load. The rigidity is why SPC hides subfloor imperfections better and installs faster than LVT. Both are legitimate products; SPC is what Lignum Core is, and it’s the format we recommend for click-lock DIY installs.
Can I put Lignum Core in a bathroom?
Yes — that’s the primary use case. Fully waterproof by construction (not just surface coating), safe with standing water from shower splashes and bath overflows, and runs under door thresholds thanks to the slim 6mm profile. The three slate-tile designs give you a real-tile bathroom look without the specialist fitter or grouting.
Do I need underlay under Lignum Core?
No — every Lignum Core plank and tile has 1mm of acoustic underlay pre-attached to the underside. Just make sure the subfloor is clean, dry, and level. On a concrete subfloor, you still need a damp-proof membrane between the concrete and the flooring, but no separate acoustic underlay is required.
How thick is Lignum Core, and will it fit under my doors?
Total profile is 6mm (5mm SPC core plus 1mm pre-attached underlay). That’s thinner than most laminate (7 to 12mm) and much thinner than tile (12mm+ with adhesive). In most UK homes it fits under existing internal doors without needing to trim them. Measure the gap under the door before you order to be sure.
How is the herringbone Lignum Core different from Fusion Premium?
Same herringbone architectural look, different core material. Fusion Premium is 12mm HDF laminate — splash-resistant, cheaper (£25.99/m²), best in dry rooms. Lignum Core Herringbone is 6mm SPC — fully waterproof, slightly pricier (£28.99/m²), best in wet-adjacent rooms. If the room has a bath, dishwasher, or back door leading to a garden, choose Lignum Core. Otherwise Fusion Premium.
Will Lignum Core dent under heavy furniture?
Less than LVT, more than tile. SPC is rigid and resistant to point-load damage, but no floating floor is completely dent-proof under heavy furniture legs. Use felt pads (which you should on any floor), and consider furniture cups under the heaviest items — a fully-loaded American fridge, a wide-legged piano. For normal residential furniture, no dents show up.
Which Lignum Core design is right for you
Warm bathroom herringbone: Mocha Oak
Deep warm brown oak in herringbone. Gives a bathroom the same considered feel as a period-property hallway. Best in bathrooms with warm-white lighting and cream or brass fittings.
Pale, contemporary, versatile: Linen Oak
Light, cool-toned oak. Reads modern and clean, sits well in bathrooms with white or grey tile walls and chrome fittings.
Real slate tile look, dark: Charcoal Slate
Deep grey slate in square tiles. Best in modern bathrooms and kitchens where you want the tile aesthetic without the tile install cost or cold underfoot.
Real slate tile look, light: Light Grey Slate
Pale grey slate in square tiles. Same real-tile look, brighter, suits smaller rooms where a dark floor would close the space down.
The Lignum Core designs we actually recommend
Lignum Core Mocha Oak Herringbone
Deep warm brown oak in the classic herringbone pattern, on a fully waterproof SPC core. The design we’d pick for a bathroom or utility room where the herringbone look matters as much as the waterproofing. 25-year residential warranty including waterproof cover.
Lignum Core Linen Oak Herringbone
Light, cool-toned oak herringbone. Best in bathrooms and utility rooms with white or grey walls, and in modern kitchens where the Mocha would feel too warm. Same waterproof SPC construction.
Lignum Core Charcoal Slate
Deep charcoal slate in click-lock square tiles. Reads convincingly as real slate at normal viewing distance, without the specialist tile fitter, the wet installation, or the cold-underfoot problem. Best in modern bathrooms and utility rooms.
Browse the full flooring collection at Aurino — Lignum Core waterproof, Kaindl and Falquon laminate, Fusion Premium herringbone, and engineered ranges. 0% finance from £15/month and free UK mainland delivery on orders over £500.
Also worth reading: Fusion Premium Herringbone (for dry-room herringbone at lower cost) and the umbrella flooring guide.
