Koch-Chemie Finish Spray Exterior

Quick detailer with limescale remover

Koch-Chemie Finish Spray Exterior

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£12.99

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Size 1L

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Koch-Chemie Finish Spray Exterior Koch-Chemie Finish Spray Exterior £12.99

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Koch-Chemie Finish Spray Exterior is an all-round detailing spray for paintwork, glass and plastics, aimed at detailers wanting a fast, streak-free maintenance step.

  • Removes limescale staining
  • Restores gloss quickly
  • Improves colour depth
  • Leaves no residue
  • Suitable for paint and glass
  • Works well on exterior plastics
  • Easy spray-and-wipe use
  • Useful after washing
Read the full description

Full Description

Koch-Chemie Finish Spray Exterior is an all-round detailing spray for paintwork, glass and plastics, aimed at detailers wanting a fast, streak-free maintenance step.

All-round detailing spray for fast care of all external vehicle surfaces such as paintwork, glass and plastics. With its special formula even stubborn limescale stains are removed quickly and without leaving any residue. Maintains and preserves in a single step. Depth of colour is returned leaving a smooth brilliant high gloss free from streaks. Finish Spray exterior is quickly removed, is easy to use and protects the surfaces against new dirt.

Key features:

  • Removes limescale without residue
  • Maintains and preserves in one step
  • Smooth, brilliant, streak-free high gloss
  • Protects against new dirt

More in Quick Detailers and from Koch-Chemie.

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Key features

  • Quick Exterior Detailer
  • Limescale Mark Removal
  • pH 1.5 Formula
  • Streak-Free Gloss

The Drivers HQ

Expert Notes

Koch-Chemie Finish Spray Exterior is a specialist exterior quick detailer designed for final wipe-down work where normal gloss sprays may struggle with water marks and limescale staining. Its acidic pH 1.5 formula helps remove stubborn mineral residue from suitable exterior paintwork, glass and plastics, while also leaving a clean, glossy and smooth finish. This makes it useful after washing, drying or water spot removal stages where light limescale marks remain. It should not be treated like a general interior detailer or a universal safe spray. Avoid interiors, hot panels and acid-sensitive surfaces, and always check compatibility before use.

Perfect For / Suitable Surfaces

  • Exterior paintwork
  • Exterior plastics
  • Water-marked exterior areas
  • Limescale-stained exterior surfaces
  • Exterior glass
  • Clear coat
  • Painted exterior panels

Caution: Always test compatibility before use. Do not use in vehicle interiors, on hot surfaces or on acid-sensitive surfaces. Avoid untreated metals, sensitive trims, matte finishes, fresh paint, delicate wraps, PPF edges and unknown surfaces unless suitability has been confirmed.

Technical Specifications

Product Type
Exterior Quick Detailer With Limescale Remover
Brand
Koch-Chemie
Product Name
Finish Spray Exterior
Product Code
Fse
pH Value
1.5
Application Method
Spray And Wipe
Primary Use
Exterior Surface Care And Limescale Removal
Suitable Surfaces
Paintwork, Glass And Exterior Plastics
Finish
Smooth High Gloss
Residue Behaviour
Streak-Free And Residue-Free When Used Correctly
Interior Use
No
Hot Surface Use
Not Suitable
Acid-Sensitive Surface Use
Not Suitable
Available Sizes
1L And 10L
1L Article Number
285001
10L Article Number
285010
Professional Use
Yes

How To Use

Exterior finishing use

  1. Make sure the surface is cool.
  2. Check compatibility on a hidden area first.
  3. Spray Finish Spray Exterior evenly onto the area being treated.
  4. Wipe the product across the surface with a clean microfibre cloth.
  5. Turn the cloth regularly during use.
  6. Buff the area until the finish is clear.
  7. Repeat only if limescale marks remain.
  8. Do not allow residue to dry on the surface.

After washing

  1. Wash and rinse the vehicle first.
  2. Dry the vehicle as normal.
  3. Inspect paintwork, glass and plastics for water marks.
  4. Apply Finish Spray Exterior only where needed.
  5. Polish off with a clean professional microfibre cloth.
  6. Use a second dry cloth for the final wipe if required.

Top Tip: Use Finish Spray Exterior as a controlled exterior wipe-down product, especially where limescale or water spotting remains after washing and drying.

Performance Benefits

  • Cuts through limescale marks
  • Restores surface smoothness
  • Improves gloss after drying
  • Wipes away quickly

Frequently Asked Questions

What is Koch-Chemie Finish Spray Exterior used for?

It is used for fast exterior care on paintwork, glass and plastics, especially where limescale or water marks need removing.

Is Finish Spray Exterior a normal quick detailer?

It is a quick detailer with added limescale removal ability, so it is more specialised than a basic gloss spray.

What is the pH of Finish Spray Exterior?

Koch-Chemie lists Finish Spray Exterior at pH 1.5.

Can I use Finish Spray Exterior inside the vehicle?

No, Koch-Chemie states it must not be used in vehicle interiors.

Can it be used on glass?

Yes, exterior glass is listed as a suitable surface.

Can it be used on plastics?

Yes, it can be used on suitable exterior plastics after compatibility testing.

Can it be used on hot panels?

No, do not use it on hot surfaces.

Can it be used on acid-sensitive surfaces?

No, avoid acid-sensitive surfaces and always test compatibility before use.

What sizes are available?

This listing is for 1L and 10L sizes.

Does it leave protection behind?

Koch-Chemie describes it as maintaining and preserving the surface, but it should not be treated as a long-term sealant.

HQ Suggests Tips & Insights

  1. Use after washing to deal with water marks.
  2. Apply only to cool exterior surfaces.
  3. Avoid interiors completely.
  4. Do not use on acid-sensitive materials.
  5. Use clean microfibre towels for buffing.
  6. Test before using on plastics or unusual finishes.
  7. Keep 1L for regular use and 10L for refilling.

The Brand

Koch-Chemie

Koch-Chemie (often written Koch Chemie) is a German car care maker from Unna. Hans Koch, a trained carpenter unhappy with the vehicle care products of the time, began mixing his own polishes in his garage in 1968 and founded Koch-Chemie GmbH. The company moved to its Unna headquarters in 1971, developed its Star range in 1990, and has been part of the French Novarc Group since June 2017. It is one of the few companies in the trade that researches, produces and sells its own products, with development and production in Unna, and many of its products are tested and approved by car manufacturers.

At The Drivers HQ we stock Koch-Chemie online with UK delivery and in our Ilkeston shop. Our customers' favourites are Green Star, Gentle Snow Foam, Pol Star, Micro Cut M3.02 and One Cut & Finish P6.02.

Shop all Koch-Chemie
Koch-Chemie Micro Cut and Finish P3.01, Heavy Cut H9.02, Micro Cut M2.02 and Headlight Polish 1 on a black display plinth in a photo studio

Koch-Chemie products by job

Pre-wash and wash. Gentle Snow Foam is a pH-neutral, cherry-scented foam that does not attack waxed or sealed paint. Use about 20ml per litre of water in a foam sprayer, or 50ml in 10 litres as a hand-wash shampoo, and add 10 to 30ml of Green Star to the mix for an active foam on stubborn dirt and insects. Green Star is the alkaline universal cleaner: 1:5 to 1:30 for exteriors and engines, 1:10 to 1:20 for interiors and textiles. Never let it dry or use it on hot panels. Active Foam, Autoshampoo and Ceramic Effect Shampoo complete the wash range, and Magic Wheel Cleaner is the wheel cleaner.

Decontamination and preparation. Eulex and Eulex M remove adhesive and stains, Orange Power lifts adhesive, tree resin and rubber marks, and Panel Preparation Spray cleans the paint before polishing or coating.

Machine polishing. Koch-Chemie gives its machine polishes a cut and gloss rating, and Heavy Cut H9.02, Fine Cut F6.01 and Micro Cut M3.02 are silicone-oil-free. Heavy Cut H9.02 (cut 9.0, gloss 6.0) takes out deep scratches and sanding marks up to 1,200 grit, Fine Cut F6.01 (cut 6.0, gloss 7.0) removes wash marks and 2500-grade sanding marks, and Micro Cut M3.02 (cut 3.2, gloss 9.0) removes holograms, fine scratches and P3000 sanding marks for the final gloss. One Cut & Finish P6.02 (cut 6.0, gloss 8.0) corrects and seals in one step. We also stock Heavy Cut H8.02, Heavy Quick Cut B9.01, Micro Cut M2.02, Micro Cut & Finish P3.01 and the P1.03 and P2.03 finish polishes, plus Headlight Polish 1 and 2 for clouded lenses.

Gloss and protection. ProtectorWax, QF Quick Finish, Quick & Shine and Finish Spray Exterior keep the gloss up between details, and the Coating Towel 5 Pack wipes off residue.

Interior, plastics and glass. Pol Star cleans textiles, leather and Alcantara, COLOURLOCK Leather Care looks after leather, and Allround Surface Cleaner and MZR clean hard interior surfaces. Plast Star is a silicone-free plastic care, alongside Gummifix, Motorplast and Hydro Plast Care. Glas Star and Glass Cleaner Pro clean glass, and Fresh Up tackles odours.

Shop Koch-Chemie by type: snow foam, all purpose cleaners, heavy cut compounds, finishing polishes, quick detailers and glass cleaners.

Koch-Chemie Micro Cut and Finish P3.01 and Heavy Cut H9.02 on a detailing trolley in front of a black BMW M2 Competition having its bonnet machine polished

Choosing a Koch-Chemie polish

Koch-Chemie rates its machine polishes for cut (how much they remove) and gloss (how much shine they leave), so you can pick the stage that matches the paint.

  • Heavy Cut H9.02 (cut 9.0, gloss 6.0) is the first stage on heavily weathered paint, deep scratches and sanding marks up to 1,200 grit. It suits soft and scratch-resistant paint. Koch-Chemie recommends a rotary polisher at medium speed and pressure, then a finishing stage with Micro Cut M3.02 or Micro Cut & Finish P3.01.
  • Fine Cut F6.01 (cut 6.0, gloss 7.0) is the middle stage for medium to heavily weathered paint and wash marks, at no more than 2,000rpm. Remove any streaks it leaves with Micro Cut M3.02.
  • Micro Cut M3.02 (cut 3.2, gloss 9.0) is the finishing polish. It removes holograms and fine scratches rather than filling them, which makes it the one to finish dark and sensitive colours.
  • One Cut & Finish P6.02 (cut 6.0, gloss 8.0) corrects and seals in one step, with carnauba wax, on a dual action polisher with at least a 15mm stroke: five pea-sized drops on the pad. Keep it off painted plastics and rubber.

Use a separate pad for each polish, keep off hot panels and store polishes away from frost and heat. For the pads and machines, see our polishing pads and polishing machines.

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  • Shop in StoreBrowse products and speak to the team in Ilkeston.

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