This 3.0m x 100mm x 100mm timber fence post is a longer, heavy section option for demanding fencing builds. It is useful where you need extra height, deeper setting, or more stability on exposed boundaries. The 100mm square profile gives you a strong fixing face for rails and panel sides, and it is pressure treated and finished in green for outdoor conditions.
The main advantage of a 3.0m post is how much you can get into the ground. As a guide, aim to bury at least a third of the length, and consider more in softer soils or windy areas. A deeper set post usually feels noticeably firmer, which helps the whole fence line hold straight over time.
Start with accurate setting out. Use a string line, check your panel or rail centres, and mark where each post should sit. With longer posts, it helps to keep checking plumb as you backfill or concrete because small movements at the base become more obvious at the top. If you are concreting, shape the top of the mix so it falls away from the timber and does not hold water around the post.
The 100mm section is a good match for most timber fence panels, especially where you want extra rigidity for taller runs or corners. It also suits rail-built fencing frames where multiple fixings go into the post. If you are hanging a gate, a dedicated gate post is normally the better choice, but for panel work this size is a strong, practical standard.
If you cut the post to suit your fence height, protect the fresh cut end grain before fitting. For extra protection at the bottom of the fence line, many customers use gravel boards to keep panels away from damp ground. Pairing the right post with suitable cement products helps you get a clean, solid installation.
