Koch-Chemie × COLOURLOCK COLOURLOCK "Filler" (White) Air-drying filler for elastic coverage of surface cracks and holes 1000ml

COLOURLOCK Filler (White) — white leather filler for precise repairs

What is COLOURLOCK Filler White used for? — The white filler evens out scratches, indentations and cracks in light leather, creating a smooth, stable base for color, texture build-up and sealing.

COLOURLOCK Filler (White) is a high-quality, white leather filler for repairs on light pigmented smooth leathers. It is ideal for scratches, cracks, scuffs, edge chips or deep abrasions and forms a stable, finely sandable surface after drying. The white color ensures that repairs on white or very light leathers can be built up particularly cleanly and color-neutrally — perfect for automotive interiors, furniture, bags, sneakers and accessories.

• Ideal for light leathers – White filler enables color-neutral, invisible repair builds.
• Finely sandable & stable – For smooth, durable and even surfaces.
• Optimal adhesion – Perfect as a base for color, binder and top coat.

Filler Technology & Mechanism of Action

Filler (White) is based on an elastic, dimensionally stable filler formula that bonds deeply with the leather and forms a robust repair layer. After application, the material hardens into a firm yet flexible structure that can be sanded and worked on excellently. This allows indentations to be precisely leveled and damaged areas to be cleanly modeled. The white pigmentation prevents dark backgrounds from showing through and facilitates an even application of color on light materials.

Application, Coverage & Best Practices

Before filling, the leather should be thoroughly cleaned and degreased. Filler (White) is applied thinly with a spatula, scalpel, brush or fine applicator tip. For deep damage, a layer-by-layer application is recommended, with a drying and sanding phase between each layer. Once the surface is smooth and even, it is color-matched with leather dye or Leather Fresh and finally sealed with Top Coat. The filler can also be thickened with Thickener if more stability is desired.

Results, Areas of Application & Benefits

After treatment, the repaired surface appears smooth, homogeneous and color-neutral — an ideal basis for perfect finishing results. Filler (White) is suitable for white car seats, steering wheels, furniture, sneaker leather, boots, bags and light interior parts. It does not replace back-bonding for deep cracks, but forms the optimal structure for all visible surface corrections on light leathers.

Frequently Asked Questions about COLOURLOCK Filler (White)

Why a white filler?

It prevents dark areas from showing through and enables color-neutral repairs on light leather.

Can the filler be sanded?

Yes, after drying it can be sanded and smoothed very well.

Is Filler (White) flexible?

Yes, it remains flexible enough for typical leather movements.

Do I need color afterwards?

Yes, the filler forms the base — then leather dye or Leather Fresh follows.

Is the filler suitable for artificial leather?

Yes, it is very suitable for many types of artificial leather.

Last updated: 10.12.2025 — Author: Daniel (Detailing1)