Laminate Classes, SPC and Quartz Vinyl (LVT): Which Is Stronger
Laminate wear classes AC1–AC6, SPC and quartz vinyl (LVT) construction, water resistance, wear layer thickness and underfloor heating — how to choose flooring.
“Laminate,” “SPC,” and “quartz vinyl” get used loosely in factory price lists — the label can hide a rigid mineral-core panel, a flexible vinyl sheet, or classic wood-fiber laminate. The difference isn’t the design (all three technologies convincingly mimic wood and stone today) — it’s the core construction, which determines whether the floor tolerates water, works over underfloor heating, and how long it lasts in a given room. Here’s how each flooring type is built and how to read the class ratings on the packaging before ordering from a factory.
Laminate: HDF core and AC1–AC6 classes
Laminate is a high-density fiberboard (HDF, 800–900 kg/m³) panel 6–12 mm thick, topped with a decorative film and a melamine-resin wear layer; water-resistant versions have wax- or paraffin-sealed edges. It locks together (click) and floats over an underlayment rather than being glued down.
Top-layer durability is described by two parallel scales under the EN 13329 standard:
| Class | AC rating | Load level | Where to use |
|---|---|---|---|
| 21 | AC1 | Light residential | Bedroom, closet |
| 22 | AC2 | Moderate residential | Living room, kids’ room |
| 23 | AC3 | Heavy residential / light commercial | Kitchen, hallway, entryway, small office |
| 32 | AC4 | Medium commercial | Retail shop, reception, office |
| 33 | AC5 | Heavy commercial | Open-plan office, high-traffic zone |
| 34 | AC6 | Very heavy commercial | Shopping mall, airport, industrial site |
Laminate’s key limitation is water. Even water-resistant versions with sealed edges only tolerate brief contact (a puddle wiped up within 10–15 minutes) — not sustained moisture. The HDF core swells at the seams, and the joint starts “tenting.” Laminate isn’t used in bathrooms, kitchen floors near the sink, or terraces for this reason.
SPC flooring: a rigid mineral core
SPC (Stone Plastic Composite) is a multi-layer plank where the load-bearing core is a rigid composite of limestone powder and PVC at roughly 1900–2050 kg/m³. On top sits a decorative film, a wear layer (0.3–0.7 mm), and a UV protective coating; the underside often already has a bonded IXPE or cork underlayment, 1–2 mm thick, that dampens footstep noise. Total plank thickness runs 4–8 mm.
Advantages of SPC:
- 100% waterproof. The mineral core doesn’t absorb or swell from water — safe to install in bathrooms, kitchens, and covered terraces.
- Dimensional stability. The rigid core doesn’t shift with temperature or humidity swings the way wood or HDF does.
- Underfloor heating compatible up to a surface temperature of 27–28°C (confirm the exact limit in the factory’s technical datasheet).
- Dent resistance. The rigid core doesn’t compress under furniture legs.
The trade-off: SPC feels harder and cooler underfoot than flexible vinyl, and it telegraphs subfloor unevenness more than LVT does — SPC won’t smooth over minor screed defects the way a flexible plank can.
Quartz vinyl (LVT): flexible vinyl flooring
Quartz vinyl, or LVT (Luxury Vinyl Tile), is a flexible plank made of plasticized PVC, 2–5 mm thick, with no rigid mineral core. The layer structure resembles SPC (decorative layer + wear layer + protective coating), but the plank itself bends in your hands. It installs either by click-lock or glue-down — glue-down is the more common choice for large commercial floors where maximum stability matters.
LVT’s advantages over SPC: warmer and softer underfoot, quieter to walk on, and better at masking minor subfloor irregularities. The trade-off: because it’s less rigid, subfloor (screed) defects can telegraph through more over time than with SPC, so subfloor prep matters more.
Comparison: laminate, SPC and quartz vinyl
| Property | Laminate | SPC | Quartz vinyl (LVT) |
|---|---|---|---|
| Core | HDF (wood fiber) | Mineral composite + PVC | Flexible PVC |
| Water resistance | Brief contact only (water-resistant versions) | Full | Full |
| Thickness | 6–12 mm | 4–8 mm | 2–5 mm |
| Wear layer | Melamine protective layer | 0.3–0.7 mm PVC | 0.2–0.7 mm PVC |
| Underfloor heating | Rated models only, temperature-limited | Yes, up to 27–28°C | Yes, conducts heat well |
| Installation | Click-lock, floating | Click-lock, occasionally glue-down | Click-lock or glue-down |
| Underfoot feel | Firm, “wood-like” | Firm, cool | Soft, warm |
| Typical zone | Bedrooms, living rooms, offices | Kitchens, bathrooms, covered terraces, commercial sites | Bathrooms, hotels, restaurants, large-format commercial areas |
Matching flooring to the room
- Bedrooms, living rooms, offices (dry zones, tighter budget): laminate class 32–33 (AC4–AC5) — the best balance of cost and durability.
- Kitchen, entryway, kids’ room: laminate class 23 (AC3) at minimum, or SPC if there’s any risk of water near a sink or entry door.
- Bathrooms, kitchen floor near the sink, covered pool-deck zones: SPC or quartz vinyl only — waterproofing is non-negotiable here.
- Villas and hotels with underfloor heating: SPC or LVT rated for underfloor heating — laminate loses out here on heat transfer and seam durability.
- High-traffic commercial spaces (lobbies, restaurants, offices): SPC or glue-down quartz vinyl with a wear layer of 0.5 mm or more, rated to use class 32–43 under ISO 10874 (the resilient-flooring equivalent of laminate’s class system) — request this rating from the factory separately.
The same logic applies to hard flooring: see our breakdown of porcelain tile wear classes in the guide to porcelain tile types and the PEI rating, and tile formats and finishes in the guide to rectified edges, glaze and tile formats.
What to specify when ordering from a factory
- Laminate class (21–34) or AC rating (AC1–AC6) — backed by the batch’s technical datasheet, not a sales rep’s word.
- SPC/LVT wear layer thickness in mm and the use-class rating under ISO 10874 for commercial projects.
- SPC core density and composition (the PVC-to-limestone-powder ratio affects rigidity and plank weight).
- Underfloor heating compatibility and maximum surface temperature — as a separate line item in the spec.
- Locking system type and whether an underlayment is pre-attached — this determines whether a separate underlayment is needed at installation.
Sourcing flooring from China through Dream View
Dream View is a sourcing agent with a fixed 10% commission on order value. We match projects with the right factory — from budget laminate for bedrooms to commercial-grade SPC for a hotel or restaurant — and verify class rating, wear layer thickness, and underfloor heating compatibility during pre-shipment inspection.
Outfitting a project and not sure which flooring fits which room? Email us at orders@dreamviewchina.com or request a quote on our services page — we’ll shortlist factories and estimate cost and delivery for free.
Frequently asked questions
Which is stronger: laminate, SPC or quartz vinyl?
For water and dimensional stability, SPC beats laminate — the rigid mineral core does not swell from water or move with temperature swings. For surface wear resistance, what matters is not the core material but the wear layer class: AC5–AC6 laminate and SPC with a 0.5–0.7 mm wear layer hold up equally well in commercial zones. For wet or outdoor-adjacent areas, SPC or LVT is clearly the safer choice; for dry living rooms, the service-life gap is minimal.
What does class 33 or AC5 mean on laminate packaging?
These are two labels from the same EN 13329 standard: the numeric class (21–34) describes the load and room type, while AC (Abrasion Class, 1–6) is a lab test rating for the top layer's abrasion resistance. AC5 roughly corresponds to class 33 — heavy commercial load: offices, shops, high-traffic zones.
Can laminate go in a bathroom or next to a kitchen sink?
No — even water-resistant laminate with sealed edges only tolerates brief contact with water (a spilled glass, wiped up within 10–15 minutes), not standing moisture. The HDF core swells at the seams under sustained humidity. For bathrooms, kitchen floors near the sink, and covered terraces, use SPC or quartz vinyl with a fully waterproof core instead.
Can SPC flooring go over underfloor heating?
Yes, most SPC flooring is rated for both hydronic and electric underfloor heating up to a surface temperature of 27–28°C — check the manufacturer's technical datasheet for the exact limit. Flexible quartz vinyl (LVT) also works over underfloor heating and conducts heat slightly better due to its thinner profile, but needs a flatter subfloor.
If SPC and quartz vinyl (LVT) are both PVC-based, what's the difference?
The difference is core rigidity. SPC (Stone Plastic Composite) has a rigid mineral core made of limestone powder and PVC at roughly 2000 kg/m³ density — as stiff as porcelain tile. Quartz vinyl (LVT, flexible vinyl) has a pliable core 2–5 mm thick that bends in your hands. SPC handles subfloor imperfections and resists furniture dents better; LVT feels softer and warmer underfoot but needs more careful subfloor preparation.
How do I read the wear layer thickness (mm) on SPC or LVT packaging?
The wear layer is the clear protective PVC film over the printed design, listed in mm on the packaging. 0.2–0.3 mm suits low-traffic bedrooms and living rooms only; 0.5 mm is the general-purpose choice for an apartment or villa; 0.5–0.7 mm and above is for hotels, restaurants, and other commercial spaces with heavy foot traffic.