Mixing & Applying Microne Medium or Coarse Plus
If you chose the “Microne Plus” option when you ordered, you will have 1 bottle for every tub of Microne that you have. Adding 1 x Microne Plus to each of the tubs, will make the surface stronger, more resistant to heat and more stain resistant.
Add 500g Microne Plus to 10kg Tub of Microne & mix well with a microcement mixer. That’s a mix ratio of 1:20.
Once mixed, you’ll have 45 minutes to 1 hour working time, so only mix what you need and make sure you’re ready to apply it straight away.
Watch the video below for a demonstration of how to apply the microcement. Scroll down for Microne Coarse Plus.
Apply 1st Coat Microne Medium Plus
Use the same technique as you did for the base coats. Just remember this coat is thinner, so it needs to be applied thinner too.
It’s important that you go as thin as the grain with Microne Medium – which you’ll see is very thin indeed.
Here’s a reminder of the technique:
Using a Microcement Trowel, work your way out from one corner creating a random edge pattern. Keep trowel movements small and random, avoid long sweeping arches – as these will show through to your final finish.
Use the grain in the microcement as your level – if you apply the microcement thicker than the size of the grain, the finish won’t be as strong and will require a lot more sanding. Run the trowel back over each section that you have put down to smooth it out and remove excess product.
Completely cover each surface without stopping. For complete rooms, start with ceilings, then walls from left to right (or right to left) and then the floor.
Run your finger or a corner trowel along internal corners to push the microcement into the corner and then gently trowel away the excess product.
Leave to dry. This should take around 3 hours but may vary depending on temperature and humidity.
Apply 2nd Coat Microne Medium Plus
After around 3 hours, you can apply your final coat of Microne in exactly the same way as the previous coats.
Be aware that the more you trowel over the microne with a steel trowel, the more it will blacken in high spots. This technique is called “burnishing” and is often used by microcement installers to add depth to their work. You’ll find that Microne Stucco Effect burnishes more readliy than Microne Continuous Effect. This looks great in grey-scale colours but isn’t always desired in lighter or brighter colours. So if you don’t want black marks, then use Continuous and try not to trowel over the same area more than you need to.
Fresh on Fresh Technique
By applying your 2nd top coat within 20 minutes – 1 hour applying your 1st coat, you can achieve a cloudy texture. On floors, you can lay high-density foam boards over the microcement to walk on.
Leave to Dry
Once you have completed your final coat, you’ll need to leave it to dry before sanding and applying sealers. This will take at least 12 hours.
Sand with 220/240 Grit Silicone Carbide Sanding Disc
Once the Microcement is fully dry, gently & evenly sand the surface of the microcement with a 220 or 240 grit paper to remove any rough patches and drips. It should be flat from the trowel so you shouldn’t need to sand it too much at this stage.
Vacuum the surface to remove all dust and debris. Do not wet the microcement.
We stock a range of Microcement Sanding Discs on our website.
Mixing & Applying Microne Coarse
Add 500ml Microne Plus Comp B to 10kg Microne Coarse with Colour and mix well.
To loosen the mix, mix thoroughly with a microcement mixer head attachment on a cordless drill. If it still feels stiff, you can add up to 10% water to loosen & mix further. That’s a maximum of 1l per 10kg.
Let the mixture rest for a few minutes before applying.
Applying the Microne Coarse Plus
Apply the Microne Coarse Plus in exactly the same way as the base coat. Because Microne Coarse is a thick product, you only need to apply 1 top coat.
Leave to Dry
This should take around 3 hours but may vary depending on temperature and humidity.
Sand with 40/80 Grit Sand Paper
Once the base coats are dry and before you apply your Top Coats, you need to make sure the Base Coats are completely flat. You need to use a strong sand paper, like Silicone Carbide, to prevent colour from the disc transfering to your work.
Flatten the Microne Base with a 40 or 80 grit sand paper. An orbital sander is ideal, but, for smaller areas, you can do it by hand.
Use the sand paper to remove ridges and drips that have dried in the microcement.
The top coats are very thin so any ridges or imperfections in the base coats will be visible in the top coats. Take your time to get it completely flat before moving on to the next step.
Vacuum the surface to remove all dust and debris. Do not wet the microcement.
Microcement Sanding Discs are available from Relentless Microcement.