Suelo vinílico SPC: qué es, ventajas y cómo elegirlo

Q: Is SPC flooring completely waterproof?

The SPC core is 100% waterproof. Floating installation joints are not: with large volumes of water, moisture can reach the subfloor. For showers, use sealed joints or tile-format SPC with adhesive.

Q: What is the difference between SPC and WPC?

WPC has a softer wood-plastic core. SPC has a stiffer stone-PVC core with better dimensional stability and moisture resistance. For wet areas or underfloor heating, SPC is the better choice.

Q: Which AC class do I need for my home?

For normal residential use, AC3 is sufficient. With pets, children or heavy traffic, AC4 with a 0.5 mm wear layer is the safer choice.

Q: Is SPC flooring compatible with underfloor heating?

Yes, with both hydronic and electric systems, as long as surface temperature stays below 27 °C. Check the technical data sheet for specific certification.

Q: What is the difference between SPC and laminate?

Laminate HDF core swells with moisture. SPC stone-PVC core is completely waterproof. For wet areas SPC is clearly superior. In dry areas laminate can be more economical.

SPC Vinyl Flooring: What It Is, How It Works and When It's the Best Choice

SPC vinyl flooring is a rigid vinyl floor with a stone composite core. It does not swell, is impervious to water and is installed floating without adhesive on any existing subfloor. Over the past five years it has become the most solid alternative to parquet and porcelain tile in residential and commercial renovation projects.

What Is SPC Vinyl Flooring?

SPC stands for Stone Plastic Composite. The core of the plank consists of a mixture of limestone powder (60 to 70%) and PVC, giving it far superior rigidity and dimensional stability compared to conventional vinyl flooring.

Unlike flexible LVT (Luxury Vinyl Tile), which bends easily by hand, SPC does not yield under heat or pressure. This has direct practical consequences: it does not require a perfectly flat subfloor, it does not swell when exposed to moisture, and it tolerates temperature fluctuations without movement.

Layer Structure from the Inside Out

1 Wear layer (WL) Transparent polyurethane coating from 0.3 to 0.7 mm thick. Determines scratch resistance and durability. The most important layer for the usage class rating.

2 Décor layer High-resolution digital print of the design (wood, stone, concrete, etc.). Printed vinyl film at up to 1,200 dpi resolution.

3 SPC core Mixture of PVC and limestone powder. Thickness: 3.5 to 6 mm. Provides rigidity, dimensional stability and complete waterproofing.

4 IXPE/EVA underlay Polyethylene foam of 1 to 2 mm. Compensates for minor subfloor irregularities, improves impact sound insulation and increases underfoot comfort. Integrated in some models, separate in others.

SPC Compared to Other Flooring Types

Feature	SPC	Flexible LVT	HDF Laminate	Parquet
Core material	PVC + stone	Flexible PVC	Wood fibre	Natural wood
Water resistance	100% waterproof	High	Low	Low–medium
Thermal expansion	Very low (<0.05%)	High	Medium	High
Floating installation	Yes	Glue or click	Yes	Glue or staples
Underfloor heating	Yes (<27 °C)	Manufacturer dependent	Some	Some
Suitable for bathroom/kitchen	Yes	Yes	No	Not recommended
Approximate price/m²	18–55 €	15–40 €	12–35 €	30–120 €
Estimated lifespan	20–30 years	15–25 years	10–20 years	30–60 years

Advantages and Disadvantages of SPC Flooring

✓ Advantages

Fully waterproof through the core
Excellent dimensional stability
Floating installation without adhesive
Compatible with underfloor heating
Wide range of finishes and designs
Easy to clean and maintain
Very good impact resistance
Suitable for commercial use (AC4/AC5)
Can be laid over existing flooring
No formaldehyde emissions

✗ Disadvantages

Less warm underfoot than wood
Cannot be sanded or refinished
Heavier than conventional laminate
Not easy to recycle
Budget quality can sound hollow
Subfloor moisture must be <75% RH
Higher price than HDF laminate

AC Usage Classes: Which One Do You Need?

AC1 Residential, light traffic

AC2 Residential, moderate traffic

AC3 Residential, heavy traffic

AC4 Commercial, moderate traffic

AC5 Commercial, heavy traffic

AC6 Industrial (rare in SPC)

For a home with dogs and children, a minimum of AC3 with a 0.3 mm wear layer is advisable. For hospitality venues, shops or building common areas, AC4 with 0.5 mm is the standard. AC5 references with 0.7 mm are intended for shopping centres and very high-traffic surfaces.

Technical note The total thickness of an SPC plank ranges from 4 to 8 mm. A 6 mm plank with an integrated 1 mm underlay results in a finished thickness of 7 mm. This matters when calculating the level change to other rooms and when adjusting skirting boards and door frames.

Installing SPC Flooring: Step by Step

Check the subfloor: dry (moisture <75% RH), clean, with no unevenness over 3 mm across 2 running metres. Use self-levelling compound for larger level differences beforehand.
Acclimatise the material: leave the boxes in the room for 48 hours at 15–30 °C.
Lay the underlay: if not integrated, roll out 1–2 mm IXPE foam. Do not stack two layers of underlay.
Start laying: from the longest or most visible wall, with 8–10 mm expansion gaps around the perimeter.
Click planks together: at a 20–30° angle for angled click systems, or vertical pressure for push-down systems. Offset joints between rows by at least 20 cm.
Cuts: circular saw, jigsaw or a cutter and straightedge for straight cuts.
Skirting boards and transitions: cover the perimeter expansion gap with skirting boards. Use transition profiles at doorways.

Warning — underfloor heating SPC is compatible with both hydronic and electric underfloor heating, but the surface temperature of the floor must not exceed 27 °C. Always check the manufacturer's technical data sheet.

Caring for SPC Vinyl Flooring

Daily cleaning: dry or lightly damp microfibre mop.
Weekly cleaning: wet mop with water and a pH-neutral cleaner. No bleach or ammonia.
Stubborn stains: isopropyl alcohol diluted to 50%. No acetone.
Protection: felt pads under heavy furniture legs.
What to avoid: steam cleaners at high temperature, aggressive chemicals, steel wool.

Durability: How Long Does SPC Flooring Last?

With correct installation and basic maintenance, a quality SPC floor (AC3–AC4, wear layer ≥0.3 mm) has an estimated lifespan of 20 to 30 years in residential use. In moderate commercial use (AC4), between 15 and 20 years.

Technical Reference Classifications

Parameter	Typical SPC value	Standard
Slip resistance	R9–R11	DIN 51130
Impact resistance	IC1–IC3	EN ISO 6603
Fire classification	Bfl-s1	EN 13501-1
VOC emissions	A+ (France) / E1	ISO 16000
Dimensional stability	<0.05% at 80 °C	EN ISO 23999
Water absorption	<0.05%	EN ISO 24340
Impact sound reduction	18–22 dB (with underlay)	EN ISO 717-2

Designs, Formats and Compatibility

Wood look: oak, walnut, ash, pine, aged wood. With synchronised embossed texture.
Stone look: marble, slate, concrete, travertine, polished cement.
Plain and geometric: matt or satin, herringbone (Chevron, Herringbone), grid pattern.

Common plank formats: narrow 180 × 1,220 mm · medium 228 × 1,524 mm · wide 305 × 1,830 mm · tile format 457 × 457 mm.

Real Use Cases: Where SPC Flooring Works Best

Bathroom Renovation Without Building Works

Lay directly over existing tiles without removal. The result is a fully waterproof floor with a wood or stone look and an added height of only 6–8 mm.

Rental Property

SPC withstands intensive tenant use without needing refinishing between tenancies. The floating installation allows removal without damaging the subfloor.

Hospitality and Retail

AC4 and AC5 references withstand heavy traffic, are easy to clean and can be replaced zone by zone.

Common Problems and How to Avoid Them

Planks Separating or Lifting

Usually caused by a missing perimeter gap or subfloor unevenness over 3 mm. Always leave an 8–10 mm expansion gap and level the subfloor beforehand.

Hollow Sound When Walking

Caused by double underlay or hollow spots in the subfloor. Use only one underlay layer and make sure the subfloor is completely flat and firm.

Frequently Asked Questions About SPC Vinyl Flooring

Is SPC flooring completely waterproof?

The SPC core is 100% waterproof. The joints between planks in a floating installation are not: with large volumes of water, moisture can reach the subfloor through the joints. For showers, sealed joints or SPC in tile format with adhesive are recommended.

What is the difference between SPC and WPC?

WPC (Wood Plastic Composite) has a softer, warmer wood-plastic core but less dimensional stability. SPC with a stone-PVC core is stiffer, more stable and more moisture resistant. For wet areas or underfloor heating, SPC is the better choice.

Can SPC flooring be installed as a DIY project?

Yes. The click system is designed for installation without a professional on flat surfaces. For uneven substrates, complex cuts or underfloor heating, a professional installer is recommended.

Which AC class do I need for my home?

For normal residential use with one or two people, AC3 is sufficient. With pets, children or heavy traffic, AC4 with a 0.5 mm wear layer is the safer choice.

Can SPC be used in kitchen and bathroom?

Yes, that is one of its greatest advantages. The core is waterproof and does not swell with ambient moisture. In bathrooms with a shower, additionally seal the perimeter joints with neutral silicone.

Is SPC flooring compatible with underfloor heating?

Yes, with both hydronic and electric systems, as long as the surface temperature does not exceed 27 °C. Check the technical data sheet for specific underfloor heating certification.

What is the difference between SPC and laminate flooring?

Laminate has an HDF core (wood fibre board) that swells when exposed to moisture. SPC has a stone-PVC core that is completely waterproof. For wet areas, SPC is clearly superior. In dry areas, laminate can be a more economical alternative.

How long does SPC installation take?

A professional can lay 25 to 40 m² per day. For a DIY installation in a standard 15–20 m² room, allow a full working day including subfloor preparation.

Conclusion

SPC vinyl flooring occupies a specific niche in the flooring market: it covers what laminate cannot (water, moisture, underfloor heating), at a price that parquet and installed porcelain tile rarely undercut. It is not the warmest or most luxurious floor, but in terms of technical performance per euro invested, it is hard to beat for renovation projects and high-traffic environments.

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Suelo vinílico SPC: qué es, cómo funciona y cuándo es la mejor opción