Cemher Joint Filler
Uses / Areas of Application
This fantastically versatile filler is specifically designed to be compatible with the Cemher microcement systems. It sets hard and sands easily, for quick and easy preparation of surfaces for microcement.
It can be applied directly to all absorbent and non-absorbent surfaces. Thanks to it’s superior adherence it can even be applied directly onto tiles to fill grout lines.
Joint Filler is incredibly quick drying. Depending on depth, temperature & ventilation it is ready for microcement to be applied within around 12 hours.
Joint Filler is the ideal for filling:
- Grout lines between tiles
- Joins between boarded floors and walls
- Screw holes
- Small voids in substrates
- Small voids in concrete, screeds & self-levellers
Characteristics / Benefits
- Pre-mixed for easy installation, excellent workability
- Can be applied on almost any type of surface: plaster, plasterboard, cement board, Aqua4ma panels, concrete, self-leveller, composite timber boards, tiles, metals
- Quick drying, microcement systems can be applied in 12 hours depending on conditions & depth
Installation
Joint Filler is pre-mixed and ready to use. It can be applied directly from the tub and has an unlimited working time.
Mix thoroughly with a mixer 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 500ml per 5kg.
Use a trowel or scraper to fill joins and voids in the substrate. For a stable surface, be sure to fill the voids completely, there should be no air pockets under the surface. Trowel flat to remove the majority of the excess whilst wet, to avoid too much sanding.
Once dry, sand the surface until it is completely flat and well consolidated across the area.
Occasionally, the Joint Filler may shrink a little into the void when drying. If this occurs, apply additional coats until the surface is completely flat.
Leave to dry, this will depend on the depth and conditions, but will usually take around 12 hours.
| Process | Apply to joins & voids as required |
| Mix Ratio |
Pre-mixed in tub Maximum 10% water to loosen |
| Standard Consumption | 5kg per 50-100 linear metres |
| Estimated Drying Time |
Between Coats: Minimum 3 hours No Maximum Before Microcement Systems: Minimum 12 hours No Maximum |
| Tools Required |
Trowel or Scraper Mixer PPE |
Speedy Deliveries
The Relentless team complete all orders by hand and mix all colours to order. Our highly experienced warehouse team are incredibly quick at this. Plus, we hold a large amount of stock in the UK so that we can get products out to you within the following timelines:
- UK mainland: 1 – 3 working days
- Isle of Wight: 2 – 4 days
- Northern Ireland, Scottish Highlands, Off-Shore Islands: 5 – 7 days
Collect in Leeds
If you're local, you’re very welcome to collect your order from our warehouse in Leeds. Once you have placed your order we’ll contact you to let you know when it’s ready for collection.
You can view our delivery policy for more information on deliveries and collections.
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Product Description
Uses / Areas of Application
This fantastically versatile filler is specifically designed to be compatible with the Cemher microcement systems. It sets hard and sands easily, for quick and easy preparation of surfaces for microcement.
It can be applied directly to all absorbent and non-absorbent surfaces. Thanks to it’s superior adherence it can even be applied directly onto tiles to fill grout lines.
Joint Filler is incredibly quick drying. Depending on depth, temperature & ventilation it is ready for microcement to be applied within around 12 hours.
Joint Filler is the ideal for filling:
- Grout lines between tiles
- Joins between boarded floors and walls
- Screw holes
- Small voids in substrates
- Small voids in concrete, screeds & self-levellers
Characteristics / Benefits
- Pre-mixed for easy installation, excellent workability
- Can be applied on almost any type of surface: plaster, plasterboard, cement board, Aqua4ma panels, concrete, self-leveller, composite timber boards, tiles, metals
- Quick drying, microcement systems can be applied in 12 hours depending on conditions & depth
-
Installation
Installation
Joint Filler is pre-mixed and ready to use. It can be applied directly from the tub and has an unlimited working time.
Mix thoroughly with a mixer 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 500ml per 5kg.
Use a trowel or scraper to fill joins and voids in the substrate. For a stable surface, be sure to fill the voids completely, there should be no air pockets under the surface. Trowel flat to remove the majority of the excess whilst wet, to avoid too much sanding.
Once dry, sand the surface until it is completely flat and well consolidated across the area.
Occasionally, the Joint Filler may shrink a little into the void when drying. If this occurs, apply additional coats until the surface is completely flat.
Leave to dry, this will depend on the depth and conditions, but will usually take around 12 hours.
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Specification
Process Apply to joins & voids as required Mix Ratio Pre-mixed in tub
Maximum 10% water to loosenStandard Consumption 5kg per 50-100 linear metres Estimated Drying Time Between Coats:
Minimum 3 hours
No Maximum
Before Microcement Systems:
Minimum 12 hours
No MaximumTools Required Trowel or Scraper
Mixer
PPE -
Shipping
Speedy Deliveries
The Relentless team complete all orders by hand and mix all colours to order. Our highly experienced warehouse team are incredibly quick at this. Plus, we hold a large amount of stock in the UK so that we can get products out to you within the following timelines:
- UK mainland: 1 – 3 working days
- Isle of Wight: 2 – 4 days
- Northern Ireland, Scottish Highlands, Off-Shore Islands: 5 – 7 days
Collect in Leeds
If you're local, you’re very welcome to collect your order from our warehouse in Leeds. Once you have placed your order we’ll contact you to let you know when it’s ready for collection.
You can view our delivery policy for more information on deliveries and collections.
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would not hesitate to recommend.
Excellent service and a lot of help when ordering for the first time. Communication was excellent and our bathroom looks superb. Has been on over 4 months now and no issues at all. Will be ordering again and would not hesitate to recommend
Loved the product.
Loved the product. Service was great to. Also training video was very helpful. My first full wet room installation. Will be ordering more shortly for another project.
Will definitely use again
I’ve used the Pro Worktop microcement kit on a couple of jobs now and am very impressed with it. The instructional videos were great and process was pretty straightforward. Took a bit of time to get a nice crisp edge and corners but worth the effort as it looks great. I found that I only had about half an hour to work with the gear once mixed before it started to drag (I think the resin starts to get sticky a bit sooner than I expected) but with that in mind it’s easy to work around. Stain resistance was perfect after the topcoat (although at that point the surface still absorbs water, just doesn’t stain) and then the sealant kept any liquid out. Try and get it as flat as possible so you don’t need much sanding as it dries extremely hard! Will definitely use again
Microcement was the perfect solution to our kitchen island dilemma
Relentless Microcement provided an extremely efficient service and provided helpful samples so we could make up our mind over the colour. Microcement was the perfect solution to our kitchen island dilemma and we loved it so much we also re-did our en-suite with the same product! Highly recommended as both a product and a company.
Excellent product
Excellent product with great customer services
I will be using relentless again and again
Great comms great efficient service quality products I will be using relentless again and again 👍
the results speak for themselves
I’m extremely happy with the product from relentless microcement, I’m a professional plasterer and wanted to do something special on my own place and the results speak for themselves will highly recommend them to clients and other plasterers.
Really good product
Really good product and found the medium coat much smoother and easier to apply then previous products I have used. Also delivery was on time and reasonable.
very helpful
Great very helpful looks fab
really helpful and friendly and open to feedback.
he support I got from the company was great, really helpful and friendly and open to feedback. I was very happy with how my project turned out: kitchen counters and backsplash with DIY microcement kit on MDF and plywood. 6months in and it’s holding up well, and looks great. Would definitely recommend if you’re looking for something different.
