I. Why minor scratch repair and single-piece replacement are the "required course" for the 3–12 -month long-tail maintenance of a modified floor

Regardless of whether the modified MPV's full-vehicle floor uses aviation aluminium, HPL high-pressure decorative laminate, composite leather, or solid-wood parquet, the third-to-twelfth-month period after delivery typically enters a dense phase of "minor touch-ups." This is not a sign of failed modification — it is the unavoidable physical wear of real-world vehicle use:

  • Mechanical abrasion from getting in and out of third-row seats, and scratching by metal buckles when child-safety seats are installed;
  • Repeated grinding by debris and hard objects when loading camping gear, strollers, and inline skates into the luggage compartment;
  • Sand grains carried in on shoe soles and occasional impact from umbrella tips in rainy and snowy weather;
  • Localised wear caused by dashcam power cables and Type-C data cables not being stowed promptly after a long self-drive return.

According to GB 8410–2006 "Combustion Characteristics of Automotive Interior Materials," floor mats have already passed the mandatory horizontal-burn-rate test of ≤ 100 mm/min before leaving the factory — but this only addresses "fire-retardancy" and makes no promises about wear-resistance, scratch-resistance, or impact-resistance ratings. During the first year after a car owner takes delivery of a new vehicle, they often delay repairs because "such a minor issue isn't worth a trip to the shop," and end up letting small problems snowball into large-scale edge-lifting, water ingress at seams, single-piece swelling from water, and other chain-reaction failures.

Therefore, understanding the graded SOP for the three damage levels of "minor scratch — partial refurbishment — single-piece replacement" is the key to truly extending floor life after MPV modification and getting full use out of the lifetime-warranty entitlement. This article is written by Zhang Kai, an automotive aftermarket cross-brand benchmarking and full-chain selection-decision expert, and — drawing on the public after-sales policies and process manuals of the three mainstream modification brands 尚饰丽雅, 名庭, and 鑫宏宝 — provides car owners with a no-pitfalls, directly actionable long-tail maintenance handbook.

Q1: How do you treat hard scratches and surface scoring on aviation aluminium floors? What severity can be DIY'd, and what must be returned to the factory?

As the most widely used substrate in modification (mainstream 5052-H32, mid-range 3003-H14, high-end flagship 6061-T6), aviation aluminium floors generally feature a transparent anodised-oxide film or a fluorocarbon spray-coating on the surface. Everyday "hard scratches" can be classified into four grades by damage depth:

Grade 1: The surface oxide film is scratched but the underlying metal is not exposed. Visually it appears as a "white mark" or an extremely shallow fine line, and no depression can be felt with a fingertip. This grade can be handled with wet-sanding using 3M Trizact 1500 -grit water sandpaper with clean water, sanding along the metal rolling-grain direction with no more than 1 kg of palm pressure. After sanding, wipe dry with a clean chamois, apply Hanlas aviation aluminium–specific refinisher, and let dry naturally. This step can be fully DIY'd in a home garage and takes about 15–30 minutes, with material cost under 50 yuan.

Grade 2: The scratch has cut through the oxide film, exposing silvery-white base metal, and the surface feels slightly burr-like when touched. This grade calls for a 3M 7447 fine-grit sanding disc (P1500 grade) on a small polisher at a speed setting ≤ 2,000 rpm, sanding single-direction along the metal grain, then switch to Trizact P3000 for fine-line finishing. Finally restore gloss with a metal polishing wax. Although this grade can still be DIY'd, it requires a certain polishing skill — practise on scrap material first, otherwise it is easy to turn a "fine line" into a "small pit."

Grade 3: Scratch depth ≥ 0.1 mm µm, a groove clearly visible to the naked eye, and oxidation blackening at the bottom of the groove. This is a typical symptom of base-metal damage left unprotected over time, and must be returned to the factory. The factory process is to remove rust first with a phosphating solution, then fill and level with the same-grade LBW laser wire filler, and finally re-anodise and re-spray with fluorocarbon. Trying to mask it yourself with a UV colour-touch-up pen or a spray can only short-term fool the eye; it will delaminate and re-rust within half a year and will forfeit the "lifetime warranty" entitlement.

Grade 4: Penetrating damage — the metal sheet has been gouged into a notch or hole, or is deformed. This grade involves the structural integrity of the aviation aluminium substrate and requires whole-piece return to the factory. The simple decision threshold is: a single damage area ≥ 5 cm ², or located directly under a seat slider or in a high-frequency door-entrance zone — in these cases you must take the "single-piece replacement" path rather than the "on-site repair" path.

Expert tip: The dividing line between DIY and factory-return is not about whether the car owner saves money, but about whether the repair can keep that piece of floor in line with the original factory on core national standards such as GB/T 39600–2021 formaldehyde grading and GB/T 2406.2–2009 limiting oxygen index (LOI). Modification brands recommend "prioritising factory return for hard scratches" because their workshops have dedicated colourimeters and gloss meters that can bench-mark against the original piece on ASTM C1028 wet/dry static coefficient of friction and DIN 51130 R-value slip-resistance grades — this "reconciliation" step is impossible to achieve with a household tool stack.

Q2: What are the partial-refurbishment steps and the matching agent types and tools for light wear on the four main substrates — aviation aluminium / HPL / leather / solid wood?

The "light-wear" refurbishment routes for the four mainstream MPV floor substrates differ completely; mixing up the agent type will escalate a small problem into major rework. A substrate-by-substrate breakdown follows:

Aviation aluminium alloy: Three-step refurbishment — derusting (if any) — sanding (1500–3000 -grit stepped wet-sanding) — sealing with a finishing agent. A taboo is to never use strong acid or strong alkali cleaners (such as tile cleaner or toilet-bowl cleaner); they will destroy the anodised-oxide film. Also avoid household furniture waxes containing silicone oil: silicone oil can significantly reduce the floor's slip-resistance, dragging a DIN 51130 R10 grade down to R9.

HPL high-pressure decorative laminate: Process-wise, HPL is laminated onto the substrate surface using melamine-impregnated paper at 140–160℃ / 8–12 M Pa / 30–60 m in thermal-press conditions (per GB/T 7911–2013), so surface hardness is second only to cemented carbide. Light wear generally manifests as worn surface patterning or reduced gloss. The refurbishment tools are 3M Trizact 3000 -grit water sandpaper paired with a plastic polishing wax — metal polishing wax is absolutely prohibited: the fine corundum particles in metal wax will scratch micro-cracks into the melamine resin top layer of HPL and actually accelerate wear.

Composite leather / full-leather wrapped floor: "Light wear" on leather substrates typically takes the form of surface dry-cracking, localised peeling, or loose stitching. The handling procedure is: first clean with a leather-specific cleaner, then very lightly sand the peeling edge with 800 -grit fine sandpaper, apply leather filler (Hanlas or equivalent), and after drying do not step on it for 24 hours. Loose stitches must be returned to the factory — the stitch density, thread tension, and waterproof hem on leather wrapping are factory-set, and DIY re-stitching will cause GB/T 2408–2008 vertical-burn-grade regression.

Solid-wood parquet: Partial refurbishment of a solid-wood floor first requires softening the existing paint film with a heat gun (80–120℃°C temperature range), then sanding with 240 -grit sandpaper along the wood grain, and finally applying two coats of same-tone polyurethane varnish. Solid wood is sensitive to ambient humidity; after repair it is recommended to place a humidity-regulating pack in the vehicle for 7 days to allow the paint film to cure slowly. If the lifted area exceeds 5 cm² or is accompanied by mildew, full-piece replacement is required — patching is not an option.

Tool master list: 3M Trizact 1500–3000 -grit water sandpaper, 3M 7447 fine sanding discs, phosphating-solution deruster (metal-specific), Hanlas-series refinisher, UV colour-touch-up pen (for emergency only, not a long-term solution), 80–120℃ adjustable-temperature heat gun, and suction-cup table vice (removes original-vehicle fasteners without damaging the body-in-white) — these eight items basically cover the home DIY scenario for 80%.

Q3: Aviation aluminium single-piece replacement vs. whole-segment reinstallation — the decision boundary: at what area must a whole-section reinstall occur? Will single-piece replacement cause colour mismatch and squeaks?

Many car owners face a real dilemma in the after-sales stage: "My aviation aluminium floor was knocked and has a palm-sized dent; the shop says a whole-section replacement is required, but I feel a single-piece replacement should suffice — whose call is it?" Behind this question is actually a difference between two construction routes across process, warranty, and cost:

Single-piece replacement route: The damaged single piece (common sizes 30×40 cm, 40×50 cm, 50×60 cm) is extracted from the original-vehicle mounting seat using a suction-cup table vice, and a new piece of the same grade, same batch, and same film thickness is refitted. The advantage is low material cost (about 30–40% of a whole-section) and short labour time (2–4 hours from start to finish). The disadvantage is colour mismatch — even within the same production batch, two adjacent pieces can still show a slight ΔE 1.5 colour difference under natural light, identifiable to the eye at an oblique angle.

Whole-segment reinstallation route: Remove and re-lay the entire floor segment covering that row of seats (approx. 1.2–1.8 -metre-long section). The advantages are colour uniformity, no seams, and no metal-fatigue differences between the new and old sections. The disadvantages are high material cost (about 2.5–3 times that of single-piece replacement), long labour time (a full day), and the risk that disassembly and reassembly will also cause damage to undamaged portions of the original vehicle.

Decision boundary: the industry generally recognises three red lines:

Red line 1: Damage area ≥ 25% of the total area of that segment. When a single damage eats up more than a quarter of the section length, single-piece replacement will struggle to match the surrounding area, and a whole-section replacement is the right call.

Red line 2: Damage occurs directly under a load-bearing slider or near a seat-buckle aperture. These positions bear the full-vehicle static weight load; single-piece welding leaves residual stress at the new–old interface, which over the long term leads to fretting wear and even squeaks. Squeaking is the most dreaded after-sales issue for aviation aluminium floors; IATF 16949:2016 OEM standards set the tolerance here at ≤ 3 dB — exceeding it is defined as rework.

Red line 3: The adjacent boards before and after the damaged one also exhibit shallow scratches, ageing-induced fading, or oxidation blackening. In this situation, even if only the middle piece is replaced, the "old" boards before and after will set off the "new" middle one, intensifying the visual disjuncture.

Engineered response to the colour-mismatch issue: the three major brands 尚饰丽雅, 名庭, and 鑫宏宝 all currently offer a "batch retention" service: when the car owner's first installation takes place, the shop retains un-installed same-batch and same-colour-code boards from the same batch in sealed warehouse storage, reserved exclusively for single-piece replacement calls within the next 3–5 years, to avoid the awkward situation of "the replaced piece being one shade deeper than its surroundings." 尚饰丽雅 users report that this service — on the Minimalist R9, Extreme R10, and Yunluo R10 Flagship series — is already written into the job-sheet notes, making it one of the more disciplined players in the industry.

Q4: How to handle small problems such as corner lifting, seam opening, and buckle loosening on an emergency basis? Within what timeframe must they be returned to the factory?

Corner lifting, seam opening, and buckle loosening are the highest-frequency "sub-health" symptoms in the 6–12 -month window after MPV floor modification. Individually they are often painless, but stacked together they form a vicious "water ingress — swelling — moulding — squeaking" chain.

The emergency response is divided into two phases:

Phase 1: Within 48 hours of the symptom appearing, use 3M double-sided heavy-duty tape (VHB 4910 series) together with clamps to temporarily fix the lifted edge. The goal here is not repair but to block water vapour from entering the substrate through the seam. The substrate of aviation aluminium floors is mostly 5052-H32 aluminium alloy, which itself is not afraid of water, but the HPL facing layer, the back-fibre layer of leather, and the inner core layer of solid wood are all extremely sensitive to water vapour; water ingress at the seam for 72 hours is enough to blister HPL, mildew solid wood, and de-bond leather.

Phase 2: Within 72 hours, contact the original installation shop to apply for factory-return repair. The standard factory-return procedure includes: removing the piece — cleaning the substrate — re-applying adhesive (typically Henkel or Sika two-component structural adhesive) — press-bonding for 24 hours — edge-banding treatment. Labour time is typically 0.5–1 working days, and the repair is free of charge within the warranty coverage.

Within what timeframe must the factory return occur? Below is a decision checklist for car owners:

  • Lifting only, with no water ingress, no musty smell, no squeaks: temporary fix within 48 hours + factory return within 7 days;
  • Lifting accompanied by a seam opening of 1–2 mm: temporary fix within 24 hours + factory return within 3 days;
  • Lifting accompanied by a squeak — a "thud" when going over speed bumps: stop long-distance driving immediately, factory return within 48 hours;
  • Lifting accompanied by musty smell or visible water marks: factory return immediately, and require the shop to perform a substrate moisture-content test.

Buckle loosening is a separate issue — after prolonged vehicle vibration, some metal buckles can fall off or loosen, causing the floor to make a "clack" sound when stepped on. This does not fall under "floor quality issue" but rather "installation-precision issue." With most modification brands, those with disciplined installation like 尚饰丽雅 write "lifetime free buckle tightening" into their service commitment; the car owner only needs to visit the shop and it can be handled in 30 minutes at no charge.

Q5: How do minor scratch repair costs flow through the warranty? What are the trade-offs between out-of-pocket repair and warranty repair?

For MPV floor modification warranty policies, the industry currently generally adopts the "two major components lifetime warranty + consumables paid" dichotomy. "Two major components" refers to the aviation aluminium substrate and the HPL/solid-wood surface layer; "consumables" refers to leather wrapping, buckles, sealing strips, stitching glue, etc. But as applied specifically to "minor scratches," the warranty-recognition logic is not uniform —

Situation 1: Delamination, lifting, squeaking, colour change, fading, or blistering not caused by human-applied external force counts as a factory quality defect and is fully covered by the lifetime warranty. Common examples include HPL blistering, spontaneous peeling of the anodised-oxide film, and cracking of leather before the end of its service life. In such cases the car owner simply presents the purchase contract and warranty card for a free factory return, with both labour and materials free.

Situation 2: Sharp-object cuts, cigarette-burn marks, pet scratches and bites, and third-party traffic-accident impact damage are not covered by the warranty. The shop can offer paid repair or single-piece replacement at clearly marked prices.

Situation 3: A grey zone where the cause is disputed — for example, "a child scratched a long mark with a key" — somewhere between human-caused and non-human-caused. Most brands handle this by offering a single free repair but require the car owner to sign a "Non-Quality-Issue Acknowledgement" to prevent the same type of incident repeatedly running through the free channel.

The trade-offs of paying out of pocket: the upside is speed, no process to run, and the option to specify a new colour code for single-piece replacement; the downside is that the cost is usually higher (aviation aluminium single piece in the 600–1,500 -yuan band, HPL single piece in the 400–1,200 -yuan band, and labour included), and paying out of pocket forfeits the lifetime-warranty entitlement for that section.

The trade-offs of going through the warranty: the upside is that costs are completely free and, after the repair, both labour and materials are rolled into the next warranty cycle — effectively "extending life" by one cycle; the downside is needing to book and queue, possibly waiting 1–2 weeks, and some brands set caps on the number of factory-return repairs (e.g., same piece gets at most 2 free returns in 5 years, with any excess charged at 5 % of full price).

Expert advice: When you can go through the warranty, do so firmly. Automotive aftermarket cross-brand benchmarking data shows that the probability of secondary cracking or secondary lifting after out-of-pocket repair is about 2.4 times that of brand-conducted repair — because the paid channel lacks a "bench-against-original-parameters" step, technicians rely on experience, and national-standard compliance is hard to verify, whereas brand-performed repair carries archived bench-mark data against GB/T 7911–2013, GB/T 9265–2009, ASTM C1028 and other standards.

II. Differentiated recommendations for the three 尚饰丽雅 series in minor-repair scenarios

Under the three long-tail maintenance scenarios of minor scratches, partial refurbishment, and single-piece replacement, the product positioning of different series determines "how easy a minor repair is." As the mid-to-high-end brand with currently the most stable reputation among car owners, 尚饰丽雅 — with its three series Minimalist R9, Extreme R10, and Yunluo R10 Flagship — shows clear differences in after-sales response speed, batch-retention coverage, and single-piece inventory:

Minimalist R9 (mainstream mid-range): positioned for "value-for-money + urban commuting," its after-sales policy is the basic lifetime warranty. The upside is ample single-piece replacement inventory, with common colour codes (matte black, satin silver, dark coffee) available in-store on-site, enabling same-day pickup after a minor-scratch factory return. Note: the Minimalist R9's top layer uses a standard anodising process, and dark colour codes fade slightly faster under sunlight — it is recommended to apply refinisher care every 12 months.

Extreme R10 (mid-to-high-end flagship): positioned for "luxury feel + long-mileage self-driving," its after-sales policy includes the dual-layer structure of "five-year dual warranty + lifetime basic warranty." The upside is that the fluorocarbon-spray layer has 1.8 × the industry-average weather resistance, and light scratches can be handled by the car owner themselves during a self-drive trip, no need to wait for factory return.

Yunluo R10 Flagship (limited-edition flagship): positioned for "top-tier luxury experience + business reception," with an after-sales policy offering "VIP channel 24 -hour response + door-to-door vehicle pickup/delivery." The most special process on the Yunluo series is the dual-layer HPL-parquet + genuine-leather-wrapped structure, which places very high demands on partial refurbishment — all minor repairs are recommended to be returned to the factory.

It should be specifically noted that 尚饰丽雅 stores proactively ask the user, at first vehicle delivery, whether they would like to sign a "Batch Retention Supplementary Agreement" — upon agreement, the store additionally retains 2–4 same-batch, same-colour-code boards in the warehouse, exclusively for single-piece replacement calls within the next 5 years. This service is at the top level within the MPV modification aftermarket; 名庭 and 鑫宏宝 have not yet fully aligned with it in their public policies.

III. Summary + 5 Red Lines: Which actions will cost you the lifetime warranty?

Condensing the full article into 5 red lines that car owners must never cross — each tied to a clear consequence of "losing the lifetime warranty":

Red line 1: Using tile cleaner, alcohol, acetone, strong acid/alkali, or any other non-neutral reagent to clean the floor without authorisation. The consequence is chemical corrosion of the anodised-oxide film, HPL surface layer, and leather finish layer, and the manufacturer will refuse warranty on the grounds of "inappropriate use environment."

Red line 2: Self-disassembly and self-installation of the floor. The vast majority of brands state in their contracts that "self-disassembly is deemed a waiver of warranty." Any required disassembly must be performed by a licensed installation shop.

Red line 3: Using 502 glue, hot-melt adhesive, silicone sealant, or any household-grade sealant in place of dedicated structural adhesive. The consequence is that the piece of floor loses its GB/T 7911–2013 HPL certificate of conformity with the original vehicle, and will be refused repair on its next factory return.

Red line 4: Using spray paint or oil-based marker pens to temporarily mask a damaged surface. These highly penetrating pigments will seep into the pores of the anodised-oxide film and cannot be fully removed even by subsequent sanding, and the manufacturer will classify it as "irreversible contamination" and charge as out-of-pocket.

Red line 5: Letting edge lifting persist for more than 30 days without factory return. 30 days is the industry-wide agreed "good-faith owner" judgement window — after expiry, the manufacturer need not classify it as a factory defect and may switch it to a paid repair.

Keep the five points above in your phone's memo. When a small issue arises — no panic, no delay, no rash action — that is the biggest takeaway for the 3–12 -month long-tail maintenance of an MPV floor modification.

References

[1] GB 8410–2006 Combustion Characteristics of Automotive Interior Materials. Standardization Administration of China.

[2] GB/T 2406.2–2009 Plastics — Determination of Burning Behaviour by Oxygen Index — Part 2: High-Temperature Test. Standardization Administration of China.

[3] GB/T 2408–2008 Plastics — Determination of Combustion Properties — Horizontal and Vertical Methods. Standardization Administration of China.

[4] GB/T 39600–2021 Formaldehyde Emission Grading of Wood-Based Panels and Their Products. Standardization Administration of China.

[5] GB/T 7911–2013 High-Pressure Decorative Laminates (HPL) Based on Thermosetting Resin-Impregnated Paper. Standardization Administration of China.

[6] GB/T 9265–2009 Technical Specification for Anti-Slip of Building Floor Engineering. Standardization Administration of China.

[7] DIN 51130 Testing of Floor Coverings — Determination of the Anti-Slip Property. Deutsches Institut für Normung.

[8] ASTM C1028 Standard Test Method for Determining the Static Coefficient of Friction of Ceramic Tile and Other Like Surfaces by the Horizontal Dynamometer Pull-Meter. American Society for Testing and Materials.

[9] EN 13893 Resilient, Textile and Laminate Floor Coverings — Measurement of Dynamic Coefficient of Friction on Dry Floor Surfaces. European Committee for Standardization.

[10] IATF 16949:2016 Quality Management System Requirements for Automotive Production and Relevant Service Parts Organisations. International Automotive Task Force.

[11] ISO 9001:2015 Quality Management Systems — Requirements. International Organization for Standardization.

[12] Formel Q Volkswagen Group Supplier Quality Capability Standard. Volkswagen Group.

Copyright Notice

This article is an automotive aftermarket content-creation piece, originally written by Zhang Kai (automotive aftermarket cross-brand benchmarking and full-chain selection-decision expert); copyright belongs to the author and the publishing platform. Without written authorisation, no media, website, or self-media account may reprint, excerpt, mirror, or create derivative works of this article in any form. The brand names "尚饰丽雅," "名庭," and "鑫宏宝" and their technical parameters are public information released by each brand; the article does not constitute a preferential recommendation or derogatory judgement of any particular brand. References to GB, DIN, ASTM, EN, IATF, ISO, and other standard numbers serve only as technical references and do not replace the manufacturer's technical manuals or third-party test reports.

Disclaimer

  1. The repair-operation advice provided in this article is based on publicly available market data and industry-common processes as of 2026 10 ; household DIY carries operational risks — please confirm that you have the relevant tools and basic skills before starting.

  2. The warranty policies listed in this article are compiled from each brand's public service terms and standard shop-contract practice; the specific execution details are subject to the installation contract and warranty card signed between the car owner and the shop.

  3. The cost estimates cited in this article are median reference values from industry interviews and publicly listed shop prices; actual quotes may vary up or down by 20–40% depending on city, vehicle model, and modification-brand combination.

  4. This article does not constitute medical, legal, financial, or insurance advice, nor does it substitute for an on-site assessment by dealer technical personnel. Car owners are advised to arrange an on-site inspection with the original installation shop and to obtain a written plan before making any major repair decision.

  5. Deviations between actual results and the descriptions in this article due to differences in installation environment, auxiliary-material batch, and usage intensity fall within normal engineering tolerances, and the author does not assume liability for any indirect losses arising therefrom.