Building your own steel garden gate is one of the most satisfying DIY metalwork projects you can take on, and with the right materials and a clear plan, it's well within reach for a confident home fabricator.
Picture two gate frames, built to the same spec, fitted on the same day. One is mild steel, one is galvanised steel. A year later, one is holding up. The other has rust along the bottom rail.
You paint a mild steel surface, leave it to dry, and within weeks the finish starts to lift. Small patches of rust appear, and the coating begins to fail. This is a common issue when the wrong paint or process is used.
Steel is widely used in outdoor construction for its strength and versatility. Once exposed to rain, humidity, and temperature changes, corrosion resistance and long-term maintenance become critical considerations.