Post Mix

Post Mix (Postcrete): Rapid Setting Fence Post Concrete

Post Mix, also known as postcrete or post crete, is a rapid-setting dry concrete for fixing fence posts, gate posts and decking posts into the ground. Our Premier Post Set needs no mixing. Add water to the hole, pour the mix in around the post, and it sets in 5 to 10 minutes.

It comes in a waterproof bag, so it keeps dry on site or in the shed until you need it. It is suitable for timber, metal and concrete posts, from £7.00 a bag.

Why choose our rapid-setting post mix

• Sets in 5 to 10 minutes, so you can hang panels the same day
• No mixing: no wheelbarrow, no shovel, no ballast to order
• Waterproof bag that stores outdoors without spoiling
• Fixes wood, metal and concrete posts, including our PermaTimber® posts, concrete posts and DuraPost metal posts
• In stock at all three branches, for collection or delivery

What can you use postcrete for?Postcrete

Postcrete is the quickest way to concrete in any post that needs to stay upright. Customers use it for garden fence posts, gate posts, decking and pergola posts, washing line posts, and post and rail fencing on paddocks and smallholdings.

How much post mix do I need?

Allow around two bags per standard garden fence post. Gate posts, taller posts and exposed sites need more, so check your hole size before you buy. Add one spare bag per fence run so you’re not caught short on the last post.

How to use post mix

1. Dig a hole about three times the width of the post, with a third of the post’s length below ground (around 600mm for a standard fence post).
2. Put about 150mm of gravel in the base so water can drain away from the post.
3. Stand the post in the hole, pour in water, then add the post mix around the post up to ground level.
4. Check the post is level on two faces and brace it while the mix sets.
5. Wait until the mix has fully hardened before fixing panels or rails.

For the full method, including common mistakes, read our guide: How to Use Postcrete.

Buying fence panels or posts at the same time? Add your post mix to the same order and collect or take delivery of everything together.

Buy postcrete near you

Walford Timber has been supplying fencing since 1945. Post Mix is in stock at all three of our yards, ready to collect or deliver with the rest of your fencing order. We also deliver nationwide if you’re outside our local areas.

Frequently Asked Questions

Is post mix the same as postcrete? 

Yes. Post mix, postcrete, post crete and post fix are all names for the same thing: a rapid-setting dry concrete for fixing posts.

How long does postcrete take to set? 

Our Premier Post Set takes 5 to 10 minutes to set once water is added. Wait until it has fully hardened before putting any load on the post.

How many bags of postcrete do I need per fence post? 

Around two bags for a standard garden fence post. Gate posts, taller posts and exposed sites need more.

Can I use post mix for metal and concrete posts? 

Yes. It fixes timber, metal and concrete posts.

Do I need to mix postcrete? 

No. Pour water into the hole, then add the dry mix around the post. There’s no need to mix it first.

Where can I buy postcrete near me?

Post Mix is in stock at our Ross-on-Wye, Cheltenham and Chesham branches for collection. You can also order online for delivery.

Do you deliver postcrete?

Yes. We deliver locally from all three branches and nationwide. See our delivery charges.

Can I buy post mix on a trade account?

Yes. Fencing contractors, landscapers and builders can apply for a trade account for discounted pricing.

Postcrete Near You