A practical guide is to bury at least 600mm (about 2ft) or roughly one‑third of the post length, adjusting for fence height, soil and exposure. Dig holes about three times the post width to allow for concrete cover and alignment.
Strong, Low‑Maintenance Concrete Fence Posts for Secure Fences
Concrete fence posts provide a rigid, low maintenance support for fencing runs and gate openings. This range covers square sections in 100×100mm and 125×125mm, with common lengths from 1.37m to 2.25m to suit panel heights and ground conditions. These posts are used to carry timber panels, closeboard bays and pedestrian gates, and offer a maintenance free alternative to timber uprights. Pair with Fence Panels or individual Fence Boards to build secure garden boundaries, screens and property lines.
Installation is straightforward: set posts in concrete or rapid‑setting post mix, keep bays consistent with standard 1.83m panel widths, and allow at least 600mm embedment (or roughly one third of the post length) for stability. A ready‑to‑use post mix helps speed up setting, use around the post and slope the top away for drainage, while a string line and spirit level keep the run true. For fence board installations, cross beam Fence Rail onto the concrete posts before fixing your boards.
These posts also work with composite systems that slot between uprights or retrofit to existing concrete posts using inserts. If you’re refreshing an old line, composite boards can be slid or stacked between existing concrete uprights without replacing foundations. Practical tools include a tape measure, string line, spirit level and hole digging equipment; allow time for curing before loading with panels.
Concrete Fence Posts FAQ's
For standard UK panels, set the clear gap at 1.83m (6ft). If you mark centres, add one post width (e.g. ~1.93m centre‑to‑centre with 100mm posts). Consistent bays make panel installation and wind performance more reliable.
Yes, ready‑mixed postcrete is designed for fixing wooden, metal and concrete posts. It typically sets in 5–10 minutes, allowing you to plumb and brace each post quickly before moving to the next bay. See Postcrete or fan in‑stock option.
Use a string line, tape measure, spirit level, and hole‑digging equipment; PPE (gloves/eye protection) is recommended. Bracing the first and last posts helps keep the line true while the concrete cures.
Yes. Several composite systems are designed to retrofit into existing concrete posts using inserts or channels, so you can renew infill without digging out the uprights.