Login Register

Blue Circle Postcrete 20kg

4.8 (820 reviews)
SKU: 240304163922007 EAN: 5018719100152

Compare 2 prices for Blue Circle Postcrete 20kg — from £6.75 to £7.13 across 2 UK sellers including B & Q, Travis Perkins.

£6.75 11h ago
View

Compare Prices from 2 Sellers

Prices updated 19 Apr 2026
2
Travis Perkins
£7.13 +£0.38
13h
#2 Travis Perkins
13h ago
£7.13 +£0.38
View
• Ideal for all posts • Ready to use • Fast setting • Light grey finish A durable, ready to use product formulated for fixing wooden, concrete and metal fence posts. No mixing is required - simply pour water into the post hole and add Postcrete. It sets quickly in 5-10 minutes and is supplied in a weatherproof, tear resistant plastic bag. Note that the minimum working temperature for Postcrete is 3°C. Meets BES 6001 certification for responsible sourcing
Brand Tarmac
MPN C20
No features listed
No items listed

Customer Reviews 820

4.8
820 reviews
5 star
734
4 star
58
3 star
12
2 star
3
1 star
13
Fast
5.0
March 1, 2026
Mel Bro Verified Purchase

Seriously rapid stuff, and perfect as long as you read the simple instructions.

Amazing quality and easy to use.
5.0
February 18, 2026
NSC Gardening Verified Purchase

Easy to use and a great product. Used for the fence posts for the garden and holds the post in place almost instantly.

Postcrete post script
5.0
January 4, 2026
AlexJag Verified Purchase

Good product. Mix of cement and fine aggregate.
Goes off very quickly which is what you want. Just make sure your post is secure, plumb and in the right place before you use it.
Seems better than a competitors equivalent product which also had 'large' 10mm aggregate which made it difficult to produce a smooth finish to the top surface.
Buying from a relatively small shop like tool station is handy as you don't have to move the stuff too far to your car (unlike most large DIY outlets).

Great Product
5.0
December 31, 2025
Mustang Gr Verified Purchase

Great product - Perfect for the repairs i had to do

It's concrete for posts
5.0
December 24, 2025
Gary the post man Verified Purchase

It's concrete for posts. I dug a hole for the post, mixed the postcrete with water, positioned the post, and laid the postcrete. It did work well. It's concrete for posts

Post cement .
5.0
December 12, 2025
Plastic Pete Verified Purchase

20 kg of post Crete just the job for my fence repairs purchased from my local suppliers at the right price.

Good buy
5.0
November 23, 2025
Egandiggerdan Verified Purchase

Does what it says on the packaging and is solid when cured.

Does the job
5.0
November 20, 2025
0Paul Verified Purchase

Hard as rock when uses so easy to scoop out and put around the job I was doing

Fence post renewal
5.0
November 13, 2025
6fdc83d8-ee19-5b17-98f5-e5ebbf5e4bda Verified Purchase

Well packaged in sealed plastic bag. Easy to dispense around our post. Set in the 10mins stated.

Fence posts
5.0
November 13, 2025
Bundle Verified Purchase

Good product always use re fencing, have used this product before very good & good price

Great product
5.0
November 8, 2025
DIYer 03 Verified Purchase

Easy to use, did the job brilliantly, you need to be quick though it doesn't take long to start curing.

I went for blue circle as it is tried and tested.
5.0
November 5, 2025
Toolbuddy Verified Purchase

I needed some quick set cement/ concrete to reset a handrail. This blue circle did the trick as I expected- but I did dug down and provide some anchor points for the postcrete to “ grip “ to. Perfect.

Easy to use and cures quickly.
5.0
November 4, 2025
Derek Rose Verified Purchase

Used to secure metal posts for a new garden arch. Easy to use and cured within 20 minutes. Excellent and efficient customer service at Ipswich Commercial Road store.

Waste of time
1.0
November 1, 2025
Dont shop in Llangefni Verified Purchase

Paid, they took payment twice but was told it was my problem.
Didn't have the stuff in stock. Only refunded 1 amount.
Told them it left me short of cash and was told I was being childish by the manager.

easy to use
5.0
October 29, 2025
Toyota1200 Verified Purchase

great product .... used to hold our rotary line in place easy to use got the job done.

Works fine
5.0
October 12, 2025
Sticky stuff tester Verified Purchase

Does what it says on the bag. It fixed a 4 x 4 post firmly

Excellent Product
5.0
October 11, 2025
Parveen Lifestyle Food Verified Purchase

Excellent product easy to use, just add water and does the job.

One bag is all u need
5.0
October 10, 2025
SLAARTI BARTFAST Verified Purchase

Convenient one-shot ‘boil in the bag’ post-fixerupper.

Rubbish
1.0
October 3, 2025
0422eb88-c99a-54f8-af5a-cc80705c26b6 Verified Purchase

This is the worst post mix I've ever used. Bag was split upon purchase. Put post in, used as directed, post lifted clean out the following day with the slab of post mix attached. It was that soft it only took my size 5's to stand on it to break it off. Don't waste your money

Post perfectly set in minutes.
5.0
September 25, 2025
A T B Verified Purchase

Does what it says and holds up posts in no time at all . Grab a tea while it sets

200,000+ Products
220+ Trusted Sellers
183,000+ Price Points
72hr Price Updates

Featured Brands

All Brands