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SKU: CEM0004

Postcrete 20kg Post Mix

Regular price £6.92 + VAT
Shipping calculated at checkout.
☀️ SUMMER SALE OFFER ☀️ Use code SUNSHINE10 for 10% off your online order Online orders over £50+VAT only. Cannot be combined with any other offer. Ends midnight 30th June.


Pickup available at Nicks Timber - Canada Wharf, Bristol Road, GL1 5TE

Usually ready in 24 hours

Delivery and Shipping

Nick's Timber proudly serves customers within a 75-mile radius of Gloucester. Usual delivery times: 3-5 working days unless specified differently. View our delivery rates >

Delivery rates from our Gloucester depot:

  • 0–5 miles: £15
  • 5–10 miles: £20
  • 10–20 miles: £30
  • 20–30 miles: £40
  • 30–50 miles: £50
  • 50–75 miles: £75
  • Over £750+VAT: Free

Not sure of your distance? Enter your postcode at checkout for an exact quote. Outside 75 miles? Collect from our yard on Bristol Road, GL1 5TE — usually ready in 2–4 days.

Free delivery: minimum order of £750+VAT

Trade Benefits

In the trade? You should be paying less.


Open a free Nicks Timber trade cash account and unlock volume pricing, preferential delivery rates, and express delivery — available from the moment you're approved. Trusted by builders, landscapers, and contractors across Gloucestershire since 1856.


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Postcrete is a fast-setting post mix concrete designed specifically for setting fence posts, gate posts, and garden structures quickly and easily. Simply pour the dry powder into the hole around the post, add water, and the concrete sets in as little as 10 minutes — no mixing required.

One 20kg bag is sufficient for a standard 100mm x 100mm fence post hole. For best results, pack hardcore or gravel around the base of the post before adding Postcrete to improve drainage.

How to Use

  • Dig hole to the correct depth (minimum 600mm for a 1.8m fence)
  • Position post and check it's plumb using a spirit level
  • Pour dry Postcrete directly into the hole around the post
  • Add water as directed on the bag
  • Leave to set — typically 10 minutes before loading

Key Features

  • Fast-setting — around 10 minutes
  • No mixing required — just add water
  • One 20kg bag per standard post
  • Suitable for fence posts, gate posts, and garden structures

We stock everything for a complete fence installation including fence posts, featheredge boards, arris rails, and gravel boards. Free delivery on orders over £750 + VAT within 75 miles of Gloucester.

All prices are exclusive of VAT.