Post Mix Concrete (20kg Bag)
Post Mix is fixing posts into the ground, it can also be used for other small jobs around the garden, like sleepers. This is why our Post Mix is a top-seller: It's a high-quality, pre-mixed formulation There's no mixing or measuring, just add water Easy to pour Great value for money Simply pour water into the post hole then add the Post Mix. It sets very fast too. Full instructions are on the bag so you can't go wrong.
Post Mix (sometimes referred to as Post Crete or post concrete) is specifically designed for the setting of timber, metal or concrete fence posts.
We recommend you use just over one bag of Post Mix per hole for fence panels - so you should allow for 1.5 bags per hole. These measurements will of course depend on the size of the hole being filled. Follow our instructions on how to use Post Mix here.
How much concrete do I need?
| Post Shape & Size | Hole Size (Width x Depth) | Approx number of bags required |
|---|---|---|
| Round 2" (50mm) | 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" (75mm) | 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" (100mm) | 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 |
User Instructions
- Dig a hole to the required size for the post, half fill the hole with water and place the post in the hole.
- The material is already pre-mixed. 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 and support appropriately until the material set occurs, after approximately 10 minutes.
- Once the postfix concrete has set, cover with earth, grass or decorative aggregate, as required.
