Why coloured Terrastone cannot simply be repaired with Terrastone
Terrastone only gets its look and colour during application. When it is applied and smoothed, the material is compressed to different degrees and therefore dries at different rates:
- Heavily compressed, thin areas dry faster.
- Less compressed, thicker areas dry more slowly. More lime particles migrate to the surface, and the Terrastone becomes lighter.
Across the whole surface, this effect is intended and creates the typical Terrastone look. With a repair, it becomes a problem: at the edges where it meets the old Terrastone, the new material cannot be compressed properly. The repaired area dries lighter and looks different from the surrounding surface.
Image 1: Repair with Terrastone only – the area clearly stands out.
The solution: touching up with a matching lacquer
There is a matching lacquer shade for each of our Terrastone colours, developed in cooperation with Brillux. This lacquer cannot yet be ordered in our shop. Please get in touch with us and we will be happy to send you a quote. Please let us know your Terrastone colour.
You will need:
- Terrastone in your colour for the repair
- the matching lacquer shade
- a stippling brush or a short round brush
- a piece of cardboard or plasterboard to tap the brush out on
- masking tape to protect adjacent surfaces
Step by step
- Fill the damage with Terrastone: Repair the damaged spot with Terrastone and keep the repair limited to the damaged area as far as possible. Let it dry completely.
- Mask adjacent surfaces: Protect adjoining surfaces and fixtures, such as sanitary ware, with masking tape.
- Tap the brush almost dry: Dip the brush into the lacquer and tap it out on the cardboard or plasterboard until it is almost dry.
- Stipple the lacquer on: Using the almost dry brush, dab the lacquer onto the repaired area. Do not brush it on.
- Repeat: Repeat steps 3 and 4 until you are happy with the result. Several light passes work better than too much lacquer at once.
The trick: Applied this way, the lacquer does not cover completely. The repaired Terrastone still shows through. Together with the lacquer, it creates a surface that blends in seamlessly with its surroundings.
Image 2: The same area after touching up with lacquer.
Summary
Can I repair coloured Terrastone with Terrastone only?
You can, but the repair usually remains visible because it dries lighter. White Terrastone, on the other hand, can easily be repaired with Terrastone.
Where can I get the matching lacquer?
The lacquer is not yet available in our shop. Contact us with your colour and we will send you a quote.
Why does the brush need to be almost dry?
Only then does the lacquer not cover completely. The Terrastone underneath remains visible, and the repair looks natural.
More on surface treatments: