Six stages from empty mould to sealed worktop. Each one has a short video.
Build your mould
Build a simple mould from melamine-faced board. Precast is cast upside down, so the face of the mould becomes the top of your worktop. Coat it with Water-Based Mould Release Agent before you pour.
Pro tip
Any mark, seam or dent in the mould base will show on your finished worktop. Check it carefully before you pour.
Mix
Add water to the Precast Concrete Worktop Mix and mix with a paddle mixer until smooth and lump-free. No vibrating table needed.
Pro tip
Use the Precast Project Calculator to work out exactly what you need before you start mixing.
Pour
Pour the mix into your mould. It flows into corners and edges without special tools. Add the fibreglass reinforcement bars, then leave it to cure before you demould.
Pro tip
Don't rush the demould. Give it the full cure time in the instructions.
Etch, clean and sand
Once demoulded, apply Etch & Clean Solution to break down the weak surface layer left by the mould. Stop it with the Neutraliser, then sand with Diamond Hand Polishing Pads for a smooth, polished face.
Pro tip
Wear gloves and eye protection while you etch.
First seal, then fill
Roll on your first coat of Concrete Lab Sealer. Once it's dry, work the colour-matched Smoothing Paste into the surface to fill any pinholes, then wipe back the excess.
Pro tip
Sealer first, then paste. If you're following the video, put your first coat of sealer on before this step.
Final seal
Apply the remaining coats of Concrete Lab Sealer with a foam roller. It keeps your worktop stain-resistant and hard-wearing, and gives you a matt or satin finish.
Pro tip
Thin, even coats always beat one heavy one. Let each coat dry fully before the next.
We used your product easy to use with a great
Result and finish
We used your product easy to use with a great
Result and finish.
Microcement Repair Mix
10/18/2026
Mrs S E Graham
Fantastic DIY product
I have bought twice and will be placing another order when I start my next project. Great customer service and how to guides too. Have recommended this product to all of my friends and will add pics when my bathroom is finished.
Microcement Polished Concrete
10/12/2026
Anonymous
Micro cement samples
Quick delivery and good size samples
Microcement Colour Samples
09/30/2026
Anonymous
Fast delivery
Really nice colours, samples came really quickly and good to be able to move them around
Microcement Colour Samples
09/21/2026
Anonymous
Seems like a good kit
Seems like a good kit, and was delivered faster than advertised
Microcement Polished Concrete
09/21/2026
N Wilson
Recomended, good product
We used the micro cement on a worktop for bar, it worked really well
Self-Adhesive Lay-Flat Mesh Tape
09/20/2026
Cristina Davey
Colour samples arrived quickly and were big
Colour samples arrived quickly and were big enough for us to be able to make an informed choice which was great!
Concrete Lab
09/17/2026
Thomas Hayes
Sample selection
Requested a sample wall selection which I highly recommend if there is any doubt on what colour you’re after.
Arrived after only a few days and helped us decided which colour we would go with.
Microcement Colour Samples
09/13/2026
Conrad Seaman
Excellent
Excellent quick delivery and easy following instructions on how to use.. utterly brilliant thank you
Microcement Polished Concrete
09/12/2026
Catrin Sinclair
Love love love it
Love love love it. Excellent quality.
Microcement Polished Concrete
09/07/2026
W J MARTIN
Looks great and colour is
Looks great and colour is vibrant
Microcement Polished Concrete
08/28/2026
Jenilee Smith
It felt daunting at first but totally easy once you got started! I did my kitchen & hall way floor
It felt daunting at first but totally easy once you got started! I did my kitchen & hall way floor so lots of space to cover. Would suggest a friend to help with the batch mixing when doing large spaces but totally doable on your own too! I’m super happy with my floors
Concrete Lab
08/22/2026
David Jacobs
Great product and plenty for the task ibwas
Great product and plenty for the task ibwas doing
Concrete Lab Sealer
08/21/2026
arjen@mindlightconsulting.com
Helpful tutorial video’s and instructions pdf
The tutorial video’s and instructions pdf are really helpful and the product is easy to work with
Concrete Lab Sealer
08/20/2026
Lydia Ellison
Great
Nice product and quick delivery
Microcement Polished Concrete
08/18/2026
What customers think about the store
Store specializing in microcement and concrete products with excellent customer service, fast delivery, and comprehensive video tutorials. Customers praise the easy-to-use DIY kits, helpful support team, quality materials, and professional results. Most apprec...Store specializing in microcement and concrete products with excellent customer service, fast delivery, and comprehensive video tutorials. Customers praise the easy-to-use DIY kits, helpful support team, quality materials, and professional results. Most appreciate the prompt responses, sample options, and clear instructions. Some delivery issues noted but quickly resolved.
Precast is cast upside down in a mould off-site, in a garage or workshop, then flipped and fitted. It can be as thin as 18mm. Cast-In-Place is poured the right way up, in position, onto cement board that stays as part of the worktop, and we recommend a 30mm core.
It depends on the size and thickness of your worktop. Enter your dimensions in the Precast Project Calculator and it gives you a full materials list. If you'd rather talk it through, give us a call and we'll work it out with you.
No. The mix is designed for confident DIYers with no concrete experience. Every stage has a step-by-step video, and our team is on hand by phone and email if you get stuck.
Melamine-faced board and silicone to build your mould, Water-Based Mould Release Agent, fibreglass reinforcement bars, the Processing Kit (Etch & Clean, Neutraliser and Smoothing Paste), Diamond Hand Polishing Pads and Concrete Lab Sealer. Everything except the mould materials is on this page, and the calculator lists exactly what your project needs.
Yes. Our Precast kits come in Small, Medium and Large, covering 1 to 3m², so you can order your project in one go.
Yes. The mix is suitable for indoor and outdoor worktops, including outdoor kitchens.
The concrete is waterproof and heat-resistant in itself; the sealer keeps it stain-resistant and hard-wearing. As with stone, use a trivet for very hot pans and wipe up spills promptly.
If you're unsure on colour, yes. Our Cast Concrete Colour Sample Pack shows you the real colours in your own light before you commit to a full pour.
Orders are dispatched on a next-day courier service across the UK, and delivery is free on orders over £250.
Still not sure? We're happy to talk you through it.
