How to Build a Garden Fence That Stays Straight
Project Overview
A good fence depends on straight setting out, solid posts and sensible panel choice. The aim is not just to make it look straight on day one, but to keep it stable through wind, wet ground and seasonal movement.
Safety Note
Check boundaries before replacing or moving a fence. Dig carefully and stop if you find cables, pipes, unknown concrete, unstable walls or protected trees. Tall fences, exposed sites and retaining edges may need professional help. Wear gloves, eye protection and a dust mask when cutting treated timber or concrete posts.
Before You Start
- Confirm the boundary line and speak to neighbours where appropriate.
- Choose panel height, post type and gravel boards before digging.
- Check ground level changes and decide how panels will step or follow the slope.
- Plan post spacing around panel widths rather than guessing as you go.
Step-by-Step Method
- Mark the fence line with string and stakes.
- Mark post centres based on panel width and gate positions.
- Dig post holes deep enough for stability and local ground conditions.
- Set corner or end posts first, checking plumb from two directions.
- Use string lines to align intermediate posts.
- Fit panels or rails only when posts are secure.
- Finish cut ends and check fixings after the first strong weather.
Common Mistakes
The usual issues are shallow posts, drifting off the boundary line, ignoring slopes, and installing panels before posts have enough support.
When to Get Help
Use a professional for high fences, exposed sites, retaining walls, shared boundaries, heavy concrete products or anything close to services.
Back to Garden & Exterior Project Guides | Back to all project guides