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Can I apply microcement to a fireplace?
Updated: 15.07.2026
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Yes, on visible parts away from extreme temperatures; the thermal load on the substrate must be addressed.
Detailed answer
Microcement can be used on visible parts of a fireplace that are not exposed to extreme temperatures. The specific construction, thermal expansion, and type of substrate are decisive factors. It's not just about what the substrate is made of, but especially its condition. Before application, check for strength, flatness, grease, dust, cracks, and any movement. If the surface is risky, it is better to reinforce it or first create a test area.
Common mistakes
- unsealed board edges
- use of unstable or damp material
- insufficient final protection against water and stains
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