Koch-Chemie × COLOURLOCK COLOURLOCK "Thickener" additive for thickening coloured filler 100ml

COLOURLOCK Thickener — additive for thickening coloured filler for precise leather repairs

What does COLOURLOCK Thickener do? — The additive raises the viscosity of coloured filler, gives you more control during application and lets you do precise structure and edge repairs without running or slumping.

COLOURLOCK Thickener is the pro additive for thickening coloured filler (Fluid Leather / leather filler) exactly where you need it. It keeps filler standing stable, stops it running and makes it easier to shape – ideal for deeper scratches, cracks, chipped edges and structural repairs on leather and synthetic leather. Thickener lets you work in control, holds its shape better and gives you a reliable base for the colour and finish coats that follow.

• Better stand-up strength – filler stays where it belongs, without slumping or flattening out.
• Precise shaping – ideal for edges, deep defects and textured areas.
• Works with COLOURLOCK fillers – pairs perfectly with coloured filler and structural repair products.

Viscosity technology & how it works

Thickener changes the rheology of the coloured filler without touching its adhesion, elasticity or colour. The additive makes the filler thicker, more shape-stable and easier to control. That matters most on vertical surfaces or repairs where you have to model the material – around edges, deep grooves or worn seat bolsters. The formula stops it sinking back as it dries and gives you a precise, even repair.

Application, dosing & best practice

Thickener goes straight into the coloured filler. Even small amounts are enough to hit the viscosity you want. Once it's stirred in you get a mouldable, easy-to-control mass you can work with a spatula, brush or fine application technique. The key is to dose it step by step so you don't over-thicken. After you lay it down, sand the repair, texture it (if needed) and finish the colour. Thickener lifts repair quality noticeably – especially on tricky shapes.

Results, uses & benefits

With Thickener your filler work comes out cleaner, sharper and truer to shape. Repairs on edges, deep scratches and textured leather look more even and hold up better. It really shows its strengths on automotive leather, furniture repairs, bags, shoes and interior parts. It rounds out coloured filler perfectly, but it doesn't replace a primer or colour coats – it only optimises how the material handles and stands up.

Common questions about COLOURLOCK Thickener

How much Thickener should I add?

Only small amounts. Dose it step by step until you hit the viscosity you want.

Does Thickener change the colour of the filler?

No. It only affects the consistency, not the shade.

Can I use Thickener with any COLOURLOCK filler?

Yes, it's made for exactly that and works with coloured filler.

Is Thickener suitable for large areas too?

Yes, especially handy on structural repairs or vertical areas.

Does Thickener affect durability?

No. The filler stays just as tough; the application just gets more precise.

Last updated: 06.12.2025 — Author: Daniel (Detailing1)