OEM
INTERIOR
RESTORATION
OEM RESTORATION AND PREMIUM CAR INTERIOR RESTORATION
OEM & LUXURY
CARS
Zonam is a specialist artisan atelier based in Monza, dedicated to conservative restoration and OEM interior restoration.
We work on high-end vehicles, with particular expertise in Porsche (Youngtimers and contemporary models), Ferrari, Lamborghini, Maserati, Bentley, BMW, and Mercedes-Benz, serving clients from Monza, Milan and its surrounding areas, Lombardy, and Switzerland.
Unlike conventional upholstery services, our approach prioritizes the preservation of originality. We carry out precise, targeted interventions (replacing a single seat bolster, repairing an insert, or reconstructing the underlying dashboard structure), ensuring absolute consistency in OEM color, grain, thickness, and stitching.
MATERIAL RESEARCH AND PHYSICAL SAMPLING FOR OEMs
MATERIALS
The authenticity of a restoration begins with the raw materials. At Zonam, we maintain a permanent collection of official OEM samples from leading German and Italian automotive brands.
For rare Youngtimer models or configurations no longer listed in official catalogs.
Original Sample
We take a physical sample of the original material from the least visible area of the component.
Material Sourcing
We send the sample to our trusted suppliers and partner tanneries in Germany, Italy and the United Kingdom.
5000K Inspection
We inspect the material under balanced 5000K lighting to assess color tone, color penetration, grain and level of opacity.
THE CHALLENGE
Partial Restoration vs.
Complete Restoration
Restoring a single section of a leather or Alcantara interior without replacing the entire component requires even greater precision than rebuilding it from scratch. Replacing a single worn seat bolster or a damaged door panel demands millimeter-perfect adherence to the original factory design.
Our craftsmen use high-precision leather skiving and splitting machines to calibrate the thickness of the new leather to within a tenth of a millimeter. This eliminates any unevenness at the seams where the new material meets the preserved original leather, making the repair virtually invisible to both sight and touch.
ENGINEERED SOLUTION WITH 3MESH
Dashboard
Restoration
Restoring leather or Alcantara dashboards is among the most complex processes in the automotive industry. In contemporary and Youngtimer models, a three-dimensional spacer fabric (3Mesh / Spacer Fabric) is positioned between the rigid ABS/carbon fiber dashboard shell and the outer upholstery.
Dashboard Leather Delamination or Heat-Induced Shrinkage: Why Re-Gluing FailsSun exposure and heat dehydrate the original leather, causing structural shrinkage that is invisible but irreversible.
Technical Note: Forcing dehydrated leather back into place and re-gluing it creates surface tension that causes the adhesive to fail within just a few weeks. The definitive solution involves completely removing the upholstery, eliminating any residual adhesive, restoring the underlying 3Mesh spacer layer, and applying new breathable leather or Alcantara upholstery.
OTHER COMPONENTS
RESTORED
- Leather and Alcantara Steering Wheels: Reupholstering of the steering wheel rim with precise reproduction of the original stitching (cross-stitch, German stitch, braided patterns), grip thickness, and 12 o’clock center marker.
- Convertible Soft Tops: Replacement of the outer fabric covering for classic and modern convertibles, ensuring perfect tension and water resistance.
- Complete Interior Components: Center consoles, transmission tunnels, Alcantara headliners, pillars, rear parcel shelves, gear shift and handbrake boots, and door panels.
SMART REPAIR VS. PART REPLACEMENT
DECISION MATRIX
Smart Repair (leather filling and refinishing) is a valid conservation technique, but it has specific mechanical limitations. At Zonam, we apply a strict assessment matrix before recommending the most appropriate restoration method to our clients.
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