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3.0M x 100 x 100mm Wooden Fence Post - Pressure Treated Brown

3.0M x 100 x 100mm Wooden Fence Post - Pressure Treated Brown
3.0M x 100 x 100mm Wooden Fence Post - Pressure Treated Brown
3.0M x 100 x 100mm Wooden Fence Post - Pressure Treated Brown
3.0M x 100 x 100mm Wooden Fence Post - Pressure Treated Brown
3.0M x 100 x 100mm Wooden Fence Post - Pressure Treated Brown
£21.49
EX VAT: £17.91
Product Information
MaterialWood
Post Type100MM Wooden Post
Width100MM
Depth100MM
Length10FT (3.0M)
TypeWooden Fence Post
ColourBrown
TreatmentPressure Treated

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The 3.0m (10ft) x 100 x 100mm wooden fence post is the largest timber post combination in this range, pairing the longest available length with the broader 100mm square section. It is intended for fencing layouts that genuinely need both additional post length and a more substantial support.

The 100 x 100mm square section gives a broader fixing face and a more substantial support than a 75mm post. It suits fence runs where a heavier timber post is preferred, including substantial panel fencing and site-built timber boundaries. The 3.0m length is intended for projects where a standard 2.4m post does not provide enough overall timber. That may be because the fence is taller, the site changes level, or the installation needs a greater below-ground allowance. It gives the installer room to deal with those conditions without relying on marginal post length.

Set the fence line out before digging so the post centres suit the actual panels or rail system rather than an assumed bay width. Keep each post plumb in both directions and check the top line as the run progresses. If the posts are being set in concrete or post mix, select a suitable material from the cement products range and follow its installation instructions rather than relying on one fixed amount for every hole.

Because 3.0m posts are heavier and provide more leverage above ground when used at greater heights, the complete fence design matters. Match the post section, panel or rail system and installation method to the actual site rather than choosing the longest post automatically. If the required post length is not obvious from the planned fence height, use the fence post length calculator before ordering. It is better to select enough overall length at the start than to discover after digging that the post cannot provide both the desired visible height and the necessary below-ground section.

The timber is pressure treated to improve resistance to fungal decay, rot and insect attack. The brown treatment gives new timber a warmer appearance that coordinates naturally with similarly treated fence panels and fencing timber. As with any natural timber product, grain, knots, colour and surface character vary from post to post and the appearance will continue to weather outdoors. The wooden fence posts range includes 75mm and 100mm sections in 1.8m, 2.4m and 3.0m lengths, so compare the complete combination rather than choosing on length or section alone.

Guides & Help

21 August 2025 0 544
Post spacing is one of the most important parts of building a strong fence. If the posts are too far apart, panels can move, rails can sag and fixings can work loose in the wind. If the posts are too ..
5 August 2026 0 204
Quick answer: Choose fence posts by matching the material, length and section to the fence height, panel weight, ground conditions and wind exposure. Pressure-treated wooden posts provide a natural..
7 May 2024 0 198
Quick answer: To install fence posts, confirm the boundary, check for underground services, mark a straight fence line and calculate the exact post spacing from the panels or rails being used. Dig ..
31 July 2026 0 86
Quick answer: Post mix is usually the more practical choice for setting standard garden fence posts. It is supplied ready blended, requires no separate mixing and sets quickly, making it well suite..
28 August 2026 0 52
Quick answer: 75 x 75mm wooden fence posts are generally suited to lighter fencing, picket panels, trellis and lower garden boundaries. A 100 x 100mm post provides a more substantial section and wi..
28 August 2026 0 50
Quick answer: Yes, pressure-treated wooden fence posts can be cut to length. If the post will be installed directly in the ground, keep the factory-treated ground-contact end intact where possible ..
28 August 2026 0 50
Quick answer: Wooden fence posts most often rot around ground level because this is where timber is repeatedly exposed to moisture, soil, air and changing weather conditions. Pressure treatment imp..
28 August 2026 0 47
Quick answer: Choose a wooden fence post long enough for both the finished fence height above ground and the section needed below ground. A 1.8m post is generally suited to lower fencing, while 2.4..
28 August 2026 0 46
Quick answer: Wooden fence posts can develop cracks and splits as the timber gains and loses moisture outdoors. Small surface checks are common in substantial sections of natural timber and do not ..