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post mix 20kg bags
20kg Post Mix Concrete Bag – Main Product Image

20kg Post Mix Concrete Bag

SKU: A-P-20
£5.70£5.70 Incl. VATExcl. VAT

Product Specifications

MaterialFast Set Concrete Mix
Weight20kg

Frequently bought with:

2.4m Timber Post 100mm x 100mm (4inch)

2.4m Timber Post 100mm x 100mm (4inch)

£15.36£15.36 Incl. VATExcl. VAT

75mm wooden fence post

2.4m Timber Post 75mm x 75mm (3inch)

£7.25£7.25 Incl. VATExcl. VAT

8ft slotted intermediate concrete post 8ft LIGHTWEIGHT

8ft (2.4m) Concrete Fence Post Intermediate – Lightweight

£19.37£19.37 Incl. VATExcl. VAT

Description

Postcrete Fast Setting Concrete Post Mix – 20kg Bag

Fast-setting, no-mix Postcrete for timber, metal & concrete posts

Our 20kg Post Mix Concrete offers a quick and reliable solution for setting fence posts, decking supports, garden arches, and more. Simply pour the dry mix into the hole, add water, and you’re done—no mixing, no mess, and no waiting around.

Key Features

  • Ready to Use: No mixing required. Just pour into the hole and add water.
  • Fast Setting: Sets in as little as 10 minutes for quick job turnaround.
  • Versatile Application: Suitable for timber, metal, and concrete posts.
  • Efficient Coverage: One 20kg bag typically sets a 75 x 75mm post. Larger posts may need more.
  • Weather Resistant: Reliable performance in wet and cold conditions.
  • Compact & Easy to Transport: Fits easily into cars and vans.
  • Bulk Options: Contact us for competitive trade rates on pallet quantities.

Product Details

Each bag contains a high-performance blend of cement, graded sand, stone, and additives, designed for maximum strength, consistent setting, and long-term durability. Whether you’re a professional contractor or tackling a DIY job, our post mix gives you a professional finish with minimal effort.

Why Choose Our Post Mix?

  • Time-Saving: No tools or mixing needed—reduces installation time and labour costs.
  • Strong & Long-Lasting: Creates a solid foundation that keeps posts stable for years.
  • Eco-Conscious: Made with sustainably sourced materials to minimise environmental impact.

Health & Safety

Warning: Contains cement. Can cause skin irritation and serious eye damage.

  • Wear gloves, eye protection, and a dust mask when handling.
  • Avoid contact with skin and eyes. Do not inhale dust.
  • If contact with eyes occurs, rinse thoroughly with water and seek medical advice.
  • If swallowed, do not induce vomiting—seek medical attention immediately.

Product Compatibility

This post mix is designed to work perfectly with our full range of fencing materials, including:

  • Wooden Fence Posts – 75mm and 100mm square sizes
  • Concrete Intermediate Posts – Including pyramid top designs
  • Garden Structures – Gates, pergolas, arches, and decking frames

Delivery & Availability

  • Fast Dispatch: Most orders delivered within 5–7 days.
  • Product Branding: While branding may vary due to supply, quality is always assured.

For secure, long-lasting fence post installation, our premium Post Mix Concrete is the trusted choice for professionals and DIYers alike.

Additional information

Weight20 lbs
Quantity

1 Bag

MPN

a-p-20

7 reviews for 20kg Post Mix Concrete Bag

  1. mick

    Used the postmix with the other fencing materials. Works really well. Careful it does set fast!

  2. chick

    good stuff

  3. steph

    delivered fast. good price

  4. sharon

    does what it says

  5. eddie

    set the fence posts well. so much easier than mixing your own concrete

  6. spencer

    works well. sets quite fast though!

  7. ollie

    used with fence posts and picket fence panels. good stuff.

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