Scratches on the glossy or metallic surface of the refrigerator spoil the appearance of the kitchen and create an impression sloppiness. Defects are especially noticeable on models with the "mirror steel" or "metallic" effect - for example, Samsung RB30A3200SA, LG GA-B459SLGL or Bosch KAN92VI30R. Unlike matte surfaces, here even microdamages are noticeable in any lighting.
The main problem is the wrong approach to polishing. Many people try to remove scratches abrasive pastes (like GOI or toothpaste), not taking into account that the metallic coating is often a thin layer PVDF (polyvinylidene fluoride) or acrylic varnish over aluminum or stainless steel. Such methods only deepen the damage. In this article - the only safe algorithm for restoring shine without the risk of damaging the factory coating, including the selection of products for the type of scratches and body material.
Why scratches appear on a metallic refrigerator
The metallized coating of refrigerators is not a single sheet of stainless steel, but a combined material. Manufacturers use three main technologies:
- 🔹 PVDF film (spraying on aluminum or steel) - y Liehberr, Miele. Layer thickness - 20–50 microns. It even scratches with a fingernail when pressed hard.
- 🔹 Acrylic varnish on top of metal - for budget models Indesit, Atlant. Less resistant to chemicals, but better amenable to polishing.
- 🔹 Stainless steel (real metal) - for premium models Smeg, Gorenje. The scratches here are deeper, but are restored by mechanical polishing.
The main causes of damage:
- 🧽 Hard sponges or metal wool when washing.
- 🪑 Moving furniture or hitting with sharp objects (knives, keys in pockets).
- 🐾 Pet claws (especially in refrigerators with
anti-fingerprintcoating - it is softer). - 🧴 Aggressive chemistry: products with chlorine, acetone or ammonia corrode the varnish.
⚠️ Attention: If the scratch reaches the metal base (a silver or dark layer is visible), polishing is pointless - you will need restorative varnish or a vinyl sticker. Check the depth by running your fingernail across the defect: if it “clings,” then the top layer is damaged.
How to determine the type of scratches and choose a polishing method
Before starting restoration, classify the defect according to two criteria:
| Type of scratch | Signs | Recommended method |
|---|---|---|
| Superficial (microdamage) | Visible only at an angle, not felt by the nail | Car polish or wax |
| Medium (damaged varnish) | Felt with a fingernail, but the metal is not visible | Abrasive paste (for example, 3M 09374) + polishing |
| Deep (to metal) | A silver/dark layer is visible, corrosion is possible | Local varnish coating or vinyl film |
| "Cobweb" (many small scratches) | Mesh of thin lines, often from a sponge | Soft abrasive + protective coating |
For an accurate diagnosis, use a magnifying glass or a flashlight: direct the light at an acute angle - this way microdamages are better visible. If the scratch wider than 0.3 mm or has rusty edges, polishing does not help, professional restoration will be required.
Preparing the refrigerator for polishing: step by step checklist
Improper preparation is the main reason why streaks or dull spots remain after polishing. Follow the algorithm:
Unplug the refrigerator and wait for the case to cool completely (1-2 hours)|
Remove all magnets, stickers and decor from the surface|
Wash the case with warm water and a mild detergent (for example, Fairy)|
Dry the surface with a lint-free microfiber cloth|
Treat scratches degreaser (isopropyl alcohol 70% or WD-40)| -->
Pay special attention to the choice rags: microfiber must be new (washing cloth or for glasses is not suitable - dirt particles remain in it). For degreasing not use acetone or solvent 646 - they destroy acrylic varnish.
⚠️ Attention: If the refrigerator has a function No Frost, before polishing, check whether access to the ventilation grilles is blocked. For example, for models Samsung RB they are located at the bottom - stick masking tape on the holes to avoid paste getting in.
Top 5 polishing products for metallic refrigerators
The choice of product depends on the depth of the scratches and the material of the case. Below is the rating for effectiveness and safety:
- Car polishes without abrasive (for example, Sonax Brilliant Shine Detailer or Meguiar’s Quick Detailer). data-i="131">and final processing. Apply by spray, do not require grinding. surface scratches and final processing. Apply by spray and do not require sanding.
- Metal polishing pastes (for example, 3M 09374 or Autosol). Used for medium scratches on stainless steel. Requires use with a polishing machine or manually (longer).
- Wax coatings (for example, Collinite 845). Mask microdamages and add shine, but do not eliminate deep scratches. Wax coatings are suitable for
- Toothpaste (white only, no granules). Suitable for emergency masking small scratches on acrylic varnish. The effect is temporary (until the first wash). data-i="145">Toothpaste (white only, without granules)
- Special sets for refrigerators (for example, Weiman Stainless Steel PolishIncludes cleaner and polish optimized for
PVDFcoatings.
For stainless steel do not use products with chlorine or ammonia - they cause darkening of the metal. The best choice for such refrigerators is pastes based on aluminum oxide (for example, Simichrome).
Step-by-step instructions: how to polish a refrigerator manually
For manual polishing you will need:
- 🧴 Selected product (see section above).
- 🧻 Microfiber cloths (3-4 pieces).
- 🔧 Rubber spatula (for deep scratches).
- 🛠 Polishing sponge (for example, 3M 05730) or foam applicator.
Action algorithm:
Application of product. For paste: squeeze a pea onto a sponge, for spray - spray at a distance of 15–20 cm. Start from an inconspicuous area (for example, the side wall).
Polishing. Movements should be circular, without pressure. For deep scratches, use linear movements along the defect. Processing time for one area is 2–3 minutes.
Removing excess. After 5 minutes of polishing, wipe the surface with a clean microfiber. If white streaks remain, repeat the treatment with less product.
Applying a protective layer. To secure the result, use wax or silicone grease (for example WD-40 Specialist). This will prevent new scratches for 1-2 months.
For refrigerators with anti-fingerprint coating (for example, LG InstaView) use only non-abrasive products —their protective layer is thinner than the standard one by 30%.
What not to do when polishing a metallic refrigerator
Errors that lead to irreversible damage:
- 🚫 Use sandpaper — even “zero” (
P2000) leaves microcavities, which later become centers of corrosion. - 🚫 Polish “dry”. Without wetting the surface, abrasive particles scratch the varnish more strongly.
- 🚫 Use stainless steel products on acrylic varnish. They contain acids that corrode the coating.
- 🚫 Press the sponge with force. Pressure of more than 1 kg/cm² deforms the thin
PVDFlayer. - 🚫 Polish in direct sunlight. Overheating the surface (>40°C) leads to clouding of the varnish.
If after polishing appear rainbow stains, it means you used a product with silicone on an acrylic coating. Remove it isopropyl alcohol and repeat the treatment with a silicone-free compound.
⚠️ Attention: On refrigerators with display on the door (for example Samsung Family Hub) avoid getting polish on the screen. To clean the display, use wet wipes for electronics.
How to protect the refrigerator from new scratches
Even after successful polishing, the metallic coating remains vulnerable. To save the result:
- 🛡 Apply protective film. Vinyl films (for example Oracal 8300) with a thickness of 100–150 microns protect against 90% of household damage. Choose a matte or glossy option to match the color of the refrigerator.
- 🧲 Use magnets with a silicone backing. They do not scratch the surface when moving.
- 🧴 Wash the refrigerator properly: only soft sponges (for example, Scotch-Brite Dobie) and pH-neutral detergents.
- 🔄 Renew the protective coating every 3 months. Wax or polymer compounds (for example, CarPro Reload) extend the life of the varnish.
For models with touch control (for example, LG InstaView ThinQ), avoid aerosol polishes - they can penetrate under the panel and cause sensor malfunctions.
How to remove old protective film without traces?
To remove vinyl film without glue residue, heat it with a hairdryer (temperature 60–70°C) and slowly pull the corner at a 45° angle. Remove any remaining adhesive using a product 3M General Purpose Adhesive Cleaner or vegetable oil (apply for 5 minutes, then wipe with alcohol).
FAQ: Frequently asked questions about polishing metallic refrigerators
Can car polish be used on a refrigerator?
Yes, but only non-abrasive compositions without wax (for example, Sonax Xtreme Brilliance). Car polishes with abrasives (for example Turtle Wax) are too aggressive for thin varnish of refrigerators. Before use, test the product on an inconspicuous area.
How to remove scratches on a refrigerator with the "anti-print" effect?
Coatings anti-fingerprint thinner than standard ones by 30-40%, so you can polish them only soft pastes (for example, Weiman Stainless Steel Polish) or wax. Abrasives or sandpaper will remove the protective layer, and the surface will lose its properties.
What to do if streaks appear after polishing?
Stains occur due to:
- Excess polish - remove excess with a clean microfiber.
- Incompatibility of the product with the coating - use isopropyl alcohol to clean and repeat the treatment with a different composition.
- Dust on the surface - before polishing, wipe the refrigerator with a sticky dust cloth.
Is it possible to polish a refrigerator using toothpaste?
Toothpaste (only white, without granulesis suitable for emergency masking minor scratches on acrylic varnish. The effect is temporary (disappears after 2-3 washes). For stainless steel or PVDFcoatings, the method is ineffective and can leave microdamages.
How much does professional polishing of a refrigerator cost?
The cost depends on the region and the degree of damage:
- Local polishing of 1-2 scratches - 800-1500 ₽.
- Full polishing of the case (including removing doors) - 3000-6000 ₽.
- Restoring deep scratches with painting - from 5,000 ₽.
In workshops they often use professional systems like 3M Perfect-Itwhich provide a guarantee of up to 1 year.