Quick detailer with limescale remover

Koch-Chemie Finish Spray Exterior

SKU KC-285001 Ask a question

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£12.99

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Size 1L

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Koch-Chemie Finish Spray Exterior £12.99
Click & Collect: Ilkeston · FreeMost eligible orders are ready within 5 minutes during opening times. Please wait for your collection-ready confirmation before travelling. Click & Collect: Ilkeston Not available for this option. Options that can be collected show it here. How it works

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.

Royal Mail Tracked 24 from £3.95, free over £100.Delivery details

Delivery and collection

Royal Mail Tracked 24

Every order is tracked. Royal Mail aims to deliver the next working day after we post it.

Order weightDelivery
Up to 1 kg £3.95
1 to 2 kg £4.95
2 to 10 kg £8.95
Over 10 kg £14.95
Orders of £100 or moreFree
  • Order by 3pm on a working day and it is usually posted the same day.
  • The same price to every UK address, including Northern Ireland, the Highlands and islands.
  • Free Click & Collect from our Ilkeston store, most orders ready within 5 minutes during opening times.
Full Delivery Information

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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 began in Germany in 1968 when trained carpenter Hans Koch started developing his own polishing compounds after becoming dissatisfied with the vehicle care products available at the time. His interest in surface finishing became the foundation of the company, with the first Koch-Chemie products moving into serial production during the 1970s. The business has remained based in Unna, Germany since 1971 and has expanded from polishing into vehicle cleaning, preparation, car wash chemistry, workshop products and industrial cleaning.

That history still shows clearly in Koch-Chemie's paint correction range. Heavy Cut, Fine Cut and Micro Cut compounds are designed as defined stages of correction and refinement, supported by corresponding pads and preparation products rather than being treated as isolated bottles of polish.

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

A Detailing Range Built as a System

Koch-Chemie approaches vehicle care as a complete chemical and process system. Its detailing catalogue covers pre-cleaners, wheel cleaners, foams, shampoos, fallout and tar removal, polishing compounds, sealants, interior cleaners, glass products and specialist treatments. Familiar products including Green Star, Pol Star, Heavy Cut H9.02, Fine Cut F6.01 and Micro Cut M3.02 each occupy a specific position within that process.

The company's ProductSystem takes this further by dividing its chemistry into ten application groups with individual colour codes. Product abbreviations and technical information are incorporated into the labelling so that users can identify what a product is designed to do and where it belongs within the wider system. This structured approach is one of the most identifiable characteristics of Koch-Chemie.

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

Developed and Produced in Unna

Koch-Chemie operates its own research and development department at its site in Unna, Germany. Formulations are tested for measurable properties including durability, gloss and hydrophobic behaviour, with development also taking material compatibility, regional conditions and professional working processes into account. The company works directly with the automotive industry, car wash operators and industrial customers when developing and refining its chemistry.

Production is also carried out in Unna, where Koch-Chemie mixes its formulations, fills and labels containers and distributes finished products. Its production operation works within DIN EN ISO 9001 quality management and DIN EN ISO 14001 environmental management systems. This combination of in-house development, manufacturing and a clearly defined product system is a substantial part of what separates Koch-Chemie from brands that primarily source and market third-party formulations.

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