Applying the 2nd Coat of MicroDur Plus Base

Mixing 2nd Coat MicroDur Plus Base

You will need 10kg of MicroDur Base to complete 1 coat over 10m2. Split your MicroDur Base into equal batches of 10kg.  Mix no more than 2 batches at a time.

For each 10kg batch, measure 2.4Kg Microdur Plus Comp A + 300g Microdur Plus Comp B using a measuring jug.

For each 20kg batch, measure 4.8Kg  Microdur Plus Comp A + Microdur Plus 600g Comp B.

Mix the A + B components into a mixing bucket, then slowly add the MicroDur Base, mixing as you go to avoid lumps forming in the mix. Be aware that you’ll have 2 hours of working time once mixed.

Mix thoroughly with a microcement mixer head attachment on a cordless drill.

Then add the colour toner and mix it in well.  Use a small amount of water to get all of the colour out of the bottle. Use a maximum 300ml water.

Let the mixture rest for a few minutes before applying.

Applying 2nd Coat MicroDur Plus Base

Apply the 2nd Coat of MicroDur Plus Base in exactly the same way as the 1st coat.

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 if you are applying another coat of MicroDur on top. If your next coat is Microne, leave for 24 hours until completely dry.

Drying times 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.  Use a strong sand paper, like Silicone Carbide, to prevent colour from the sand paper transfering to your work.

Flatten the MicroDur Plus Base with a 40 or 80 grit sand paper. An orbital sander is ideal, but, for smaller areas, you can do it by hand.  And for larger areas you may prefer to use a floor sander.

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.