100mm x 100mm Treated Timber Fence Posts

We stock a large selection of treated 10cm x 10cm softwood posts in heights from 1,5m up to 3.6m. These posts are pressure-treated to UC4 for in-ground use.

All posts have square ends (flat) as standard unless otherwise stated. Other Post Tops (post weathers) can be added on request.
As round-top posts are very popular, we offer 100 x 100mm posts with round tops, ready for collection.
100 x 100mm posts can have corner (edge) chamfering and/or router lines added if desired. Please use the Made-to-Measure Sizes section below to request a quote.

• Our 100 x 100mm sawn softwood posts are treated with the latest-generation preservatives to UC4 standard..
• Suitable for use as Fence or Gate posts.

Here's a bit more general information about our wooden Square Fence and Gate Posts.

Edge chamfering, different post tops, and router lines can be added to 100mm square posts if desired.

Protect the top of your post with a Metal post cap or a standard Wooden post cap.

If you can, we do recommend adding an extra treatment to any timber that is in contact with the ground, particularly from 100mm above ground level to 450mm below ground level. 

For fencing, allow 600mm (2ft) in the ground up to 1.2m fence height. For fencing 1.35m (4ft-6ins) or over, exposed areas, or soft ground, we recommend increasing this to 750mm (2ft 6ins).

We have both fast-setting post mix and the more traditional Ballast and cement to make up a dry mix. Either of these options is suitable for securely fixing 10cm x 10cm posts in position.

Please read our Helpsheet on Looking After Pressure-treated Fencing.

To extend the life of the fence and gate posts, you may want to consider adding a timber treatment or wood preserver that can add extra protection to the part of the post going into the ground.