EIR vs Crystal vs Deep Wood —
Which SPC Surface Finish
Is Right for Your Project?
Every SPC plank in a showroom looks convincing. The difference becomes apparent in three seconds — under natural raking light, at floor level, with the sample laid flat on a hard surface. Surface finish is the parameter that determines whether a floor reads as «luxury vinyl» or «natural timber». This guide is written from a factory that produces all three finishes on the same production line — with a specific view on when each is the correct specification and when it is the wrong one.
The most common surface finish specification error in commercial SPC procurement is selecting a finish based on a 10cm × 10cm sample viewed under showroom halogen lighting. Raking natural light from a window at 15° to the floor surface reveals every alignment gap between the printed grain and the physical texture embossing. Under these conditions, a misaligned emboss looks like a photocopied wood pattern — because that is exactly what it is. EIR alignment precision is the single most important variable in whether a floor passes the scrutiny of a professional interior architect. Most data sheets don’t mention it. Ours does.
The Three Finishes — What They Actually Are
EIR, Crystal, and Deep Wood are not brand names or marketing categories. They are three distinct manufacturing processes applied at the UV coating and embossing stage of SPC production, each producing a fundamentally different visual and tactile result. Understanding the process difference is the basis for correct specification.
The physical texture embossed onto the wear layer is aligned — registered — with the printed grain pattern beneath. Where the print shows a wood pore, the emboss creates a physical depression. Where the print shows a ridge, the emboss creates elevation. The result is tactile-visual unity: what you see is what you feel. EIR is the finish that makes the critical difference under raking natural light.
Hotel guest rooms Premium residential High-end retail Boutique hospitalityA fine, uniform micro-texture applied across the entire surface without grain-alignment. The result is a clean, semi-gloss surface with subtle shimmer — not a wood imitation, but a sophisticated material in its own right. Crystal reads as «contemporary floor covering» rather than «wood substitute». Correct where the design brief values precision and cleanliness over natural texture.
Modern offices Scandinavian residential Healthcare corridors Minimalist retailA deeper, more exaggerated embossing pattern that produces pronounced grain relief — the ridges and valleys are deeper than in standard finishes. The visual effect is deliberately rustic: reclaimed oak, hand-scraped timber, aged hardwood. Not trying to replicate a fine-grained timber. Trying to replicate a character-grade board with visible knots and dramatic grain variation.
Restaurant & bistro Heritage retail Country-style residential Craft brewery / barEIR in Detail — The Alignment Precision Question
EIR is the finish most frequently discussed and most frequently misunderstood in procurement. The concept is simple. The execution is difficult. And the quality variation between EIR products in the market is larger than between any other surface finish parameter.
The print film — the decorative layer that shows the wood grain — and the embossing roller that presses the physical texture into the wear layer surface are two separate manufacturing elements. In standard embossed SPC (non-EIR), the embossing roller applies a generic texture pattern that has no relationship to the specific print design beneath it. The texture looks like wood grain. The print looks like wood grain. But they are not the same wood grain. Under close inspection or raking light, the disconnect is visible.
Producing genuine EIR requires a dedicated embossing roller machined to match each specific print design — not a generic wood-texture roller applied to any decor. The roller and the print film must be fed through the production line in precise synchronisation, with the emboss registration maintained within ±1–2mm across the full plank width and length. Every time a new decor is introduced, a new matched roller is required. This is the reason EIR costs more than standard emboss: it is genuinely more expensive to produce correctly. A supplier offering «EIR» at the same price as standard BP emboss is either using a generic roller or offsetting the cost elsewhere.
EIR surface precision is visible across the plank field. The bevel — the chamfered edge where two planks meet — is visible at every joint line. A standard micro-bevel creates a fine shadow line. A Painting Bevel (彩绘斜边) adds a tinted fill to the bevel channel, simulating the colour variation of a real timber edge and masking the uniform PVC colour that appears on cut edges. For high-specification EIR installations, Painting Bevel is the detail that eliminates the last synthetic tell at joint lines.
Painting Bevel: +US$0.30/m² · Available on all EIR decorsGloss Level — The Most Misquoted Specification
The original version of this page stated «5–7° gloss level» — a unit error. Gloss is measured in GU (Gloss Units) at a defined angle (typically 60°), not in degrees. A 60° gloss reading of 85 GU is high-gloss; 5–10 GU is super-matte. The specification of gloss level is consequential: too high and the floor shows every footprint and subfloor ripple; too low and the surface loses depth and appears flat under artificial lighting.
Project Type Decision Table — Which Finish to Specify
Bevel Type — The Detail That Completes the Specification
Surface finish and bevel type are specified together — they interact visually at every joint line. The bevel is the chamfered edge where two planks meet, creating a shadow line that defines the «plank» visual. Two bevel types are available across all surface finishes.
A tinted pigment is applied to the bevel channel, matching or complementing the decor colour. This masks the uniform PVC colour visible on cut edges and simulates the natural colour variation of a real timber edge at the joint. At floor level and under raking light, Painting Bevel eliminates the last synthetic tell — the uniform-coloured edge gap between planks. Recommended for all EIR specifications in premium applications.
EIR premium · Hotel · Luxury residentialA fine chamfer applied to all four plank edges, creating a subtle shadow line at each joint without additional colouring. The PVC edge colour is visible in the channel. For most commercial specifications — office, retail, healthcare — the micro-bevel is visually appropriate and the cost difference from Painting Bevel is not justified by the specification requirement.
Standard commercial · Office · HealthcareWhen requesting samples for surface finish evaluation: specify the lighting conditions under which the sample will be reviewed. Request one sample of each finish in the same decor — the difference is most apparent when identical decors are viewed side by side under the same raking natural light. For EIR, request confirmation of the emboss registration tolerance (±1–2mm or better) and whether the embossing roller is decor-specific or generic. These two questions alone will separate genuine EIR from standard emboss sold as EIR.
See the Difference
Under Natural Light.
The only way to evaluate EIR vs Crystal vs Deep Wood correctly is to view samples side by side under raking natural light — not showroom halogen. Request an evaluation set: the same decor in all three finishes, with and without Painting Bevel. Dispatched within 5 business days. MOQ for production orders: 800 sqm per SKU.
For project specification support — correct finish selection for your specific brief — contact our technical team. Response within 24 hours with a written specification recommendation.