Porsche C4S Cabriolet Restoration


Marque One Detailing Interior Restoration of a Porsche C4S Cabriolet

This Porsche C4S Cabriolet had not been touched for 8 years and with the roof failing in the winter without the client knowing, it had filled up with dirty water, as a result required one of our interior and paint work restoration packages.

Work That was carried out

The list of work which was carried out is a long, particularly as there was so much that needed to be carried out as a result of the water damage that had been sustained within the interior.

Together with the condition of the paint work that had not been touched for over 8 years had to be addressed.

The work carried out is as follows.


Fully deep cleaned vacuumed dried then left for 6 hours with the heating on.

Fully re-dyed black (X2 coats)

Again left to dry, then fully fabric sealed for protection (X2 Coats)

Interior Restoration

leather was removed where possible fully deep cleaned using everything in our arsenal.

Fabrics  – fully cleaned and wet vacuumed and scrubbed to remove the standing water and dirt.

The leather was then sanded in areas and recoloured with Colour Lock products.

Rear seat had failed leaving a hole, the rotten leather was removed exposing a bigger hole, this then had a gauze glued underneath linking the seam to the seat.

Filler was then added and sanded back numerous times, this was allowed to harden.

A primer was then added followed by the paint and top coat (x2 coats).

The primer, colour and top coat was added to the entire seat for a fresh look.

Drivers seat bolster:-  As all cars this is the prime area for wear and tear as it has the most traffic in and out.

A lot of discolouring had occurred as well as sink age and stretch lines.

This was fully cleaned sanded, filled, primed and top coat added. This was blended in with the seat to match.

Every part of this interior has been recoloured somewhere. small holes were touched in as well as discolouration on the vents.

After 3 days and 13 bucket of dirty water the interior then had a full protection package added using Colour Lock products.

The fabric were treated to G-Techniq fabric seal like the roof.

Exterior – Body work

Full safe wash

Deep clean on the rubbers and plastics seal and dress where possible

Decontamination process

Light inspection

Paint depth readings

Panel wipe

Touch -in of stone chips and deeper scratches

Wet sanding

Stage 3 polish

Panel wipe

IGL Kenzo 10H 2 stage coating applied

Exhaust cleaned coated and ‘blacks’ touched in on the inner oval

Head lights

Masked off areas

Full sanding of both lights removing all clear coat failure


Seal – using IGL Kenzo

Front (boot) luggage area.

Removal of all plastics

Deep clean


All debris removed and bagged for client

Plastics C4 ceramic coat treated.

Fabric sealed with G-Techniq

Rubbers cleaned and sealed

Window wipers removed cleaned and ‘arms’ coated

Engine Bay :- Full deep clean

Rubbers cleaned and sealed

Spoiler cleaned and sealed underneath

Badges steam cleaned and polish removed from previous paint work

All plastics dressed

Wheel arches and brakes

Deep clean using steam

All arches de-tarred and dressed

Callipers clean polished and sealed with IGL wheel coating

Inner discs cleaned and coated

Wheel nuts cleaned and copper slipped

Interior and external Glass

Cleaned and polished

Glass sealed with IGL glass coating

All mirrors cleaned and sealed

Wheels and Tyres

Deep cleaned


Over spray removed


Touched in

IGL wheel coating applied

Tyres deep cleaned


Kamikaze ceramic tyre coating added

Final wipe down with IGL Premier completed this Porsche Interior and exterior restoration.

For more information on our Detailing, Ceramic Coating & Paint Protection packages, including our PPF application services.

Please call us on 07548675497
or 07840039615 | Email us on mark@marqueonedetailing.com
Or you can use our contact form on the contact us page