Square Posts < 125mm

  • Large stocks of posts
  • Pressure treated with preservative
  • Lengths up to 4.8 metres
  • 75mm, 100mm and 125mm sawn posts
  • Postsaver sleeves also available
  • Ground spikes and post supports
  • 15 Year Permapost option
  • Best practices for cutting and drilling
  • Careful post installation prolongs life

Product Details

We carry a wide range of square sawn posts at Southern Timber to cover many potential constructional needs. Large section sawn posts, Permaposts and planed posts, are described elsewhere on the website. Sawn tanalised posts are useful for many fencing, decking and structural applications.  This page focuses on the popular 75mm and 100mm posts

Sawn 75mm square post options

The 75mm x 75mm posts are ideal for supporting trellis, panels and fences in sheltered positions or where the panels do not offer too much wind resistance. However, for solid panles and windy areas a 100mm x 100mm post would be preferable.  They are also useful as supports for smaller sheds and for cutting into smaller lengths for retainers and supports in raised beds.

75mm x 75mm, tanalised at 1.8 metres (approx. 6′)
75mm x 75mm, tanalised at 2.4 metres (approx. 8′)
75mm x 75mm, tanalised at 3.0 metres (approx. 10′)

Sawn 75mm fence and motorway posts

Post and rail fences and agricultural fences normally utilise the 75mm x 125mm posts which provide a larger face to secure horizontal rails to. Also available is the 75mm x 150mm post which is often specified in the fences adjoining dual carriageways and country roads.

75mm x 125mm, tanalised at 1.8 metres (approx. 6′)
75mm x 125mm, tanalised at 2.13 metres (approx. 7′)
75mm x 150mm, tanalised at 2.13 metres (approx. 7′)

Sawn 100mm square post options

Featheredge fences and privacy fence panels generally offer more resistance in strong winds and are best supported by the more substantial 100mm x 100mm. These posts are also sometimes cut into shorter lengths to create dwarf posts up to joist level in some elevated decking installations.
100mm x 100mm, tanalised at 1.8 metres (approx. 6′)
100mm x 100mm, tanalised at 2.4 metres (approx. 8′)
100mm x 100mm, tanalised at 3.0 metres (approx. 10′)
100mm x 100mm, tanalised at 3.6 metres (approx. 12′)
100mm x 100mm, tanalised at 4.8 metres (approx. 16′)

Finally, all of our posts are pressure treated, most of them with Tanalith E preservative. This treatment gives the timber a light green tint which soon mellows to pale brown then grey.  The most important factor is the protection against fungal and insect attack.

Phone to order

01803 813 803

Lines open 7:30 - 17:00 Mon - Fri

Delivery details

Usually within 1-2 working days

At Southern Timber we offer a kerbside delivery through the Torbay, Teignbridge, Exeter, South Hams and Plymouth areas. While most deliveries are free sometimes they may be chargeable depending on location and the total value of the order.

We offer next day delivery, when required, for our normal delivery days (Monday to Friday) and normal delivery areas. Customers are requested to phone in before 12.00 pm on the day prior to delivery with their complete product listing, delivery address and payment details.