Microcement kits make a DIY microcement project very achievable — but the finish lives or dies on technique. These are the five mistakes we see most often, and how to avoid them. If you'd rather not risk it, we also apply professionally — get a quote.
1. Poor substrate preparation
Most failures start here. The existing surface must be clean, sound, dry and properly primed. Skipping prep or priming leads to poor adhesion and, later, cracking or peeling. Use the right bonding primer for your substrate.
2. Skipping or rushing the primer
The primer is what keys the microcement to the surface. Applying microcement over an unprimed or under-cured primer is a common cause of delamination. Follow the recommended drying times.
3. Over-mixing or wrong consistency
Adding too much water or over-mixing changes the working properties and can weaken the coat or cause colour inconsistency. Mix to the product's spec, in the right ratios, and only what you can apply in the working time.
4. Rushing coats and cure times
Microcement is built in thin layers, each needing time to cure before the next. Rushing this — thick coats, not enough drying — causes cracks and an uneven finish. Patience is part of the method. Our application guide covers timings.
5. Sealing mistakes
The sealer makes microcement water- and stain-resistant. Sealing too early (before the finish has cured), uneven coverage, or the wrong sealer for the location (e.g. indoor sealer used outdoors) will compromise durability. Match the sealer to the use.
Should you DIY or hire a pro?
DIY saves labour and is very doable on smaller areas like a feature wall, especially with a complete kit. For large floors, wet rooms, or a flawless high-gloss finish, professional application is worth it. Browse kits or request a quote.
Frequently asked questions
Can I apply microcement myself?
Yes — with a complete kit and careful prep, DIY is achievable, especially on smaller areas like feature walls. Larger or wet areas benefit from professional application.
Why did my microcement crack?
The most common causes are poor substrate prep, coats applied too thick, or insufficient cure time between layers.
Do I need to seal microcement?
Yes — sealing is what makes it water- and stain-resistant; use the correct sealer for indoor vs outdoor use.
Prefer it done for you? Get a free quote.