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Post Mix

(31 customer reviews)

£6.95Including VAT

  Post Mix Concrete 20kg

In stock

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Add to Wishlist
£6.95Including VAT
  Post Mix Concrete 20kg


Post Mix is suitable for use in fixing all types of wooden, metal and concrete posts. Post Mix is also sometimes known as postcrete.


The mix is a kiln-dried, pre-blended, factory-produced, quick-setting concrete which hardens in approximately 10 minutes after water addition, depending on ambient conditions.

Post Shape & Size

Hole Size (Width x Depth)

Approx number of bags required

Round 2″

6″ (150mm) x 12″ (300mm)
6″ (150mm) x 18″ (450mm)
6″ (150mm) x 24″ (600mm)
8″ (200mm) x 12″ (300mm)
8″ (200mm) x 18″ (450mm)
8″ (200mm) x 24″ (600mm)

1/2 Bag
1/2 Bag
3/4 Bag
2/3 Bag
1 Bag
1 1/2 Bags

Square 3″

8″ (200mm) x 18″ (450mm)
8″ (200mm) x 24″ (600mm)
8″ (200mm) x 30″ (750mm)
12″ (300mm) x 18″ (450mm)
12″ (300mm) x 24″ (600mm)
12″ (300mm) x 30″ (750mm)

3/4 Bag
1 Bag
1 1/3 Bag
2 1/4
3 Bags
3 3/4 Bags

Square 4″

8″ (200mm) x 18″ (450mm)
8″ (200mm) x 24″ (600mm)
8″ (200mm) x 30″ (750mm)
12″ (300mm) x 18″ (450mm)
12″ (300mm) x 24″ (600mm)
12″ (300mm) x 30″ (750mm)

2/3 Bag
3/4 Bag
1 Bags
2 Bags
2 3/4 Bags
3 1/2 Bags

How to use

  • Dig hole to required size for post, half fill hole with water and place the post in the hole.
  • The material is already pre mixed and there is no need for mixing, it can simply be emptied straight from the bag into the hole.
  • Add the Remix Post Mix Concrete uniformly around the post until it is above the level of water. If any dry powder remains visible at this stage, add additional water until absorbed by the material.
  • Adjust the post into position & support appropriately until material set occurs after approximately 10 minutes.


After laying

Once concrete has set, cover with earth, grass or decorative aggregate as required.

Additional information

Weight20 kg

31 reviews for Post Mix

  1. Anonymous

  2. Kevin G.

    What it says on the packet . Set quick

  3. Anonymous

  4. Norman Hamilton

    Nice strong mix (i.e. plenty cement powder) and quick setting.

  5. Peter

  6. Alan C.

  7. Alan Lopez

  8. Lesley Tilbury

    Easy to use

  9. Paul Gallagher

  10. Neil L.

  11. Peter M.

    Great product, great packaging, good price

  12. Dave A.

  13. Mike Gardner

  14. Philip M.

  15. Malcolm Glanville

    It works well

  16. Paul


  17. Maria R.


  18. Ian H.

    haven’t used it yet so can only comment the bags were in good condition.

  19. Mark Collins


  20. Julie Pilgrim


  21. Shaun C.

    Does exactly what it says on the bag. Great

  22. Peter P.

    Kebur always seem to have everything I need at a good price and swift delivery even if I only order in small lots. Helpful and pleasant staff.

  23. Anonymous


  24. roger d.


  25. Andrew


  26. Alan Lopez


  27. Mark B.


  28. clive cousins


  29. Michael N.


  30. Alan Lopez

    Worked fine. The driver was a top guy,very helpful.👍

  31. Deborah W.


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