Commercial SPC Flooring Specification Guide — EN 685 Class, Thickness and System by Project Type
Commercial flooring specification starts with EN 685 utilisation class — not brand, not price, not appearance. The EN 685 class determines which product is technically appropriate for each project zone. General office and retail requires Class 33/42 (5–7mm SPC click or 2.5mm Dryback). Heavy commercial requires Class 43 (8mm SPC, 0.7mm wear). NHS hospitals and airport terminals require Class 44 — achievable only with 3mm Dryback in a permanent adhesive bond. Consequently, the system selection (SPC click vs Dryback) follows directly from the class requirement — and the class requirement follows directly from the project type.
Step 1 — Determine EN 685 Class by Project Zone
The EN 685 utilisation class is the European standard that classifies resilient floor coverings by their intended use environment and traffic intensity. Every commercial project specification should state the EN 685 class requirement for each zone — not just the product name — because the class is what legally defines whether the product is appropriate for that use.
Sustained foot traffic, occasional rolling luggage loads. Guest rooms do not require Class 33/42 — Class 31/33 is sufficient for the room itself. However, corridors, lobbies, and escape routes require Class 33/42 minimum, with Bfl-s1 fire classification mandatory for all escape routes.
Guest room: Class 31/33 · Corridor: Class 33/42High foot traffic, rolling chair loads, occasional heavy furniture movement. Standard EU commercial specification is Class 33/42 — satisfied by 5–7mm SPC click with 0.5mm wear layer or 2.5mm Dryback with 0.55mm wear layer. For German Leistungsverzeichnis, EN 16511 certification is additionally required alongside EN 685 Class 33/42.
Class 33/42 · 0.5mm wear minimumClass 33/42 for classrooms and offices; Class 43 for corridors with high foot density. Additionally, VOC emission certification (FloorScore or GREENGUARD Gold, AgBB for Germany) is mandatory for educational and healthcare environments. BREEAM Hea 02 Indoor Air Quality credits require FloorScore or equivalent.
Class 33/42–43 · FloorScore / AgBB mandatoryEN 685 Class 33 for residential units; Class 33/42 for common corridors and amenity areas. UK BTR: UKCA, Bfl-s1 Approved Document B compliance, FloorScore for BREEAM credits. Australia high-rise: 8mm SPC with △IIC 23–24 dB for NCC/BCA Part F5 acoustic compliance. UFH compatibility required across most UK new-build residential.
Units: Class 33 · Corridors: Class 33/42Sustained heavy foot traffic, rolling trolley loads, and pallet jack traffic in some zones. Class 43 for general areas; Class 44 where pallet jacks or heavy hospital trolleys are in use. Bfl-s1 mandatory throughout. For EU airport terminals, compliance with ACI (Airports Council International) facility standards specifies Class 43 minimum in passenger zones.
Class 43 (general) · Class 44 (pallet zones)EN 685 Class 44 is the maximum classification for resilient floor coverings. It requires both a 0.7mm wear layer AND a permanently adhesive-bonded installation. No SPC or LVT click format achieves Class 44 regardless of thickness or wear layer. Specifically, NHS HTM 61, EU airport ACI standards, and supermarket chain facilities specifications that include pallet jack traffic all require Class 44 — achievable exclusively with 3mm Dryback LVT in a hard-set adhesive installation.
→ 3mm Dryback · 0.7mm wear · Permanent adhesive bond — no exceptionsStep 2 — Select the Correct Thickness
Once the EN 685 class is determined, thickness selection follows from three parameters: the utilisation class requirement, the subfloor condition, and the acoustic performance requirement. The full technical comparison is in our SPC thickness comparison guide. The summary for commercial specification is as follows.
Standard UK BTR residential, EU apartment, hotel guest room. UFH-compatible. Best heat transfer efficiency of the four thicknesses. Subfloor flatness within 3mm/1.8m required.
Class 31/33 (0.3mm) · Class 33/42 (0.5mm)Commercial renovation where subfloor preparation is limited. Bridges minor subfloor irregularities better than 5mm. UK housing association corridors, EU retail renovation. UFH-compatible.
Class 33/42 · 0.5mm wear standardThe EU heavy commercial standard. German Leistungsverzeichnis Class 42/43, Dutch office and retail, French commercial. EN 16511 certified. 0.5mm or 0.7mm wear layer options for Class 42 or Class 43 specification.
Class 42 (0.5mm) · Class 43 (0.7mm)Australian NCC/BCA Part F5 acoustic compliance — △IIC 23–24 dB with pre-attached IXPE. Class 43 maximum with 0.7mm wear. Also specified for UK developments with stringent acoustic requirements under Approved Document E.
Class 43 · △IIC 23–24 dB · 0.7mm wearStep 3 — SPC Click or Dryback? The Commercial Decision
The choice between SPC click and Dryback LVT is not primarily a product quality decision — it is a project requirement and economics decision. The full system comparison is in our Dryback vs Click vs Loose Lay guide. For commercial procurement, the key decision factors are:
| Decision Factor | SPC Click (5–8mm) | Dryback LVT (2–3mm) |
|---|---|---|
| Max EN 685 class | Class 43 (0.7mm wear) | Class 44 (0.7mm + adhesive) |
| Installation method | Floating — no adhesive | Permanent adhesive bond |
| Installation speed | Faster — immediate use | Adhesive cure 24–48h |
| Subfloor prep requirement | Moderate (3mm/1.8m EN 13318) | Full preparation required |
| 20ft container yield (5mm vs 2.5mm) | ~2,439 m² | ~5,100 m² |
| FOB price (standard spec) | US$6.18–7.60/m² | US$5.10–5.90/m² |
| Landed cost (large volume) | Higher (lower container yield) | Lower (2× container yield) |
| UFH compatibility | Excellent | Excellent |
| Rolling load resistance | Excellent (rigid core) | Maximum (permanent bond) |
| Reversible / replaceable | Easier replacement | Difficult — adhesive bond |
For any project above 2,000 m² where EN 685 Class 33/42 is sufficient and adhesive installation is acceptable: 2.5mm Dryback LVT delivers the lowest landed cost per m². The container yield advantage alone (5,100 m² vs 2,439 m² per 20ft container) reduces freight cost per m² by approximately 52% — before the FOB price difference is even considered. See our container landed cost guide for the complete calculation methodology with worked examples.
Step 4 — Certification Requirements by Market
Commercial SPC flooring requires a specific set of certifications that varies by destination market. The EN 685 utilisation class and Bfl-s1 fire classification are universal requirements. Additional certifications are market-specific — and missing even one can prevent a product from being included in a project tender or passing a building authority inspection.
Requesting only Bfl-s1 confirmation from a supplier is insufficient for most commercial project tenders. The CE Declaration of Performance (with notified body number), EN 685 class confirmation, and the relevant VOC certification (FloorScore, GREENGUARD Gold, or AgBB) are all required — and each must be product-specific, not company-level. Our quality verification guide details how to independently confirm each certification before placing a container order.
Step 5 — Container Procurement and Landed Cost
For commercial developers and procurement managers sourcing at scale, the total landed cost per m² — not the FOB price alone — is the correct comparison metric. The container yield of the specified product has as much impact on total landed cost as the FOB price itself, because freight is charged per container regardless of how many m² fit inside.
The full landed cost calculation — including ocean freight by market, import duty rates (EU 4.7%, AU 0% ChAFTA, US Section 301), customs clearance, and port handling — is covered in our container landed cost guide with worked examples for UK, AU, and DE markets.
Frequently Asked Questions
Tell us your project type, EN 685 class requirement, destination market, and volume. We return FOB pricing and the complete compliance document package — CE DoP, Bfl-s1 test report, FloorScore certificate, and all market-specific certifications — within one business day. MOQ 800 sqm per SKU.