Is Crystal Serum Ultra only available through accredited detailers?

Yes. Gtechniq says Crystal Serum Ultra (CSU) cannot be bought off the shelf and has to be applied by a trained Gtechniq Accredited Detailer. Gtechniq asks detailers to have a physical workspace large enough to apply and cure the coating, to complete training online or in person, and to pass a review by Gtechniq.

How long does the Gtechniq Crystal Serum Ultra warranty last?

Gtechniq gives CSU a nine-year guarantee when it is applied by an Accredited Detailer. Gtechniq ties the guarantee to correct application and to ongoing maintenance with compatible products. Ask the detailer for the written terms. For DIY use, Gtechniq says Crystal Serum Light with EXOv5 gives up to five years of protection when properly maintained.

Can Gtechniq Crystal Serum Ultra be applied over PPF?

Coatings are often applied over paint protection film, but ask the detailer which Gtechniq product they use on film and why. Check the film warranty as well. XPEL, for example, says a ceramic coating over its film does not void its PPF warranty. Not every film maker says the same, so ask.

How do I verify a Gtechniq Accredited Detailer?

Ask the detailer for proof of their Gtechniq accreditation and confirm it with Gtechniq if in doubt. Only an Accredited Detailer can apply Crystal Serum Ultra. A detailer without accreditation can still apply consumer Gtechniq products such as Crystal Serum Light and EXOv5.

Ceramic coating / Brand

Brand index

Gtechniq

Gtechniq listings verified 29 Jul 2026methodology

British ceramic coating brand and the most visible name in the UK detail scene. Crystal Serum Ultra is hand-applied only by Gtechniq Accredited Detailers — a deliberately small, vetted network. The accreditation matters more here than for any film brand.

Flagship product

Crystal Serum Ultra

Two-layer ceramic system, 9-year warranty, accredited-only application.

Also in the range

C2v3 · EXOv5

The warranty, honestly

9-year warranty on Crystal Serum Ultra when applied by an accredited detailer. Self-applied versions exist (CSL, EXOv5) but the warranty drops accordingly.

How to verify an installer

Gtechniq publishes its Accredited Detailer list on gtechniq.com — if the installer isn't on it, they cannot apply Crystal Serum Ultra. Other Gtechniq products can be applied by anyone.

The Gtechniq read

What the brand actually is, what it makes, where it sits in the UK, and which buyer it suits.

Gtechniq is a British ceramic coating company founded in 2001 and based in Northamptonshire. It does not make paint protection film. It appears in this directory because ceramic coating is one of the services installers can list here. Its best-known professional coating is Crystal Serum Ultra, which is applied only by Gtechniq Accredited Detailers.

Films

The coatings, broken down

Gtechniq makes coatings, not film. Crystal Serum Ultra (CSU) is its professional coating, with a nine-year guarantee when applied by an Accredited Detailer. Gtechniq describes a softer 7H base layer that bonds to the paint and a harder 10H top layer, using 7 nanometre and 20 nanometre particles. Crystal Serum Light (CSL) is the version owners can apply themselves. EXOv5 is a hydrophobic coating that Gtechniq says gives up to two years of water repellency with proper care, and up to five years of protection when layered over CSL and maintained.

UK market position

Where Gtechniq sits in the UK

Gtechniq says CSU cannot be bought off the shelf. To become accredited, a detailer needs a physical workspace large enough to apply and cure the coating, has to complete training online or in person, and must pass a review by Gtechniq. Ask the detailer for proof of accreditation and the written guarantee terms. Our cost guide uses prices published by UK installers; get two or three quotes for your car.

Who picks it

Who should pick Gtechniq

Gtechniq suits owners who want a coating with a long guarantee from an accredited detailer, either on its own or alongside paint protection film. If you are combining the two, ask which Gtechniq product goes on the film and check the film maker's warranty terms. Ask too whether paint correction is included before the coating goes on.

Questions / Gtechniq

Warranty mechanics, verification process, and the product-line questions buyers ask most often.

Brand questions buyers
ring us about.

01Is Crystal Serum Ultra only available through accredited detailers?: Yes. Gtechniq says Crystal Serum Ultra (CSU) cannot be bought off the shelf and has to be applied by a trained Gtechniq Accredited Detailer. Gtechniq asks detailers to have a physical workspace large enough to apply and cure the coating, to complete training online or in person, and to pass a review by Gtechniq.
02How long does the Gtechniq Crystal Serum Ultra warranty last?: Gtechniq gives CSU a nine-year guarantee when it is applied by an Accredited Detailer. Gtechniq ties the guarantee to correct application and to ongoing maintenance with compatible products. Ask the detailer for the written terms. For DIY use, Gtechniq says Crystal Serum Light with EXOv5 gives up to five years of protection when properly maintained.
03Can Gtechniq Crystal Serum Ultra be applied over PPF?: Coatings are often applied over paint protection film, but ask the detailer which Gtechniq product they use on film and why. Check the film warranty as well. XPEL, for example, says a ceramic coating over its film does not void its PPF warranty. Not every film maker says the same, so ask.
04How do I verify a Gtechniq Accredited Detailer?: Ask the detailer for proof of their Gtechniq accreditation and confirm it with Gtechniq if in doubt. Only an Accredited Detailer can apply Crystal Serum Ultra. A detailer without accreditation can still apply consumer Gtechniq products such as Crystal Serum Light and EXOv5.

Directory / Gtechniq

UK installers carrying Gtechniq

Cross-checked against the official Gtechniq locator where one exists, plus website badges and Google Maps signals. Verified marks (✓) on installer cards mean we found the listing on the brand's own site, not just a self-claim.

City

Verified by Gtechniq only

24 installers

Gtechniq

Crystal Serum Ultra

The coatings, broken down

Where Gtechniq sits in the UK

Who should pick Gtechniq

Brand questions buyersring us about.

UK installers carrying Gtechniq

JnJ Detailing

APS Detailing Ltd

Spotless Detailing Elgin

Black Country Detailing

Dark Horse Detailing

Cambridge Concours Ltd

ATD Vehicle Appearance

Blackbeard's Detailing

LDS Detailing

Autotrilogy

Detail Your Eyecandy

Atom Detailing

12 more studios

Most people considering Gtechniq also look at

Gtechniq

Crystal Serum Ultra

The coatings, broken down

Where Gtechniq sits in the UK

Who should pick Gtechniq

Brand questions buyersring us about.

UK installers carrying Gtechniq

JnJ Detailing

APS Detailing Ltd

Spotless Detailing Elgin

Black Country Detailing

Dark Horse Detailing

Cambridge Concours Ltd

ATD Vehicle Appearance

Blackbeard's Detailing

LDS Detailing

Autotrilogy

Detail Your Eyecandy

Atom Detailing

12 more studios

Most people considering Gtechniq also look at

Brand questions buyers
ring us about.

Brand questions buyers
ring us about.