How Is a Custom Iron Gate Built and Installed

Elegant iron gate with intricate designs opening into a sunlit corridor with plants.

On a coastal lot where posts lean and walls drift out of plumb, the opening has to be measured at the top and the bottom before any steel is cut, and the shop notes at iron gates carlsbad auto stem follow that order for every gate built in Carlsbad, CA. Everything after the tape measure depends on those two numbers, whether the job is a single swing, a dual swing or a slide gate.

Measuring the opening

Close-up of a vintage iron gate with a 'Please Close the Gate' sign in black and white.

Take the width at the ground, at mid height and at the top rail line, then check each post with a level. Masonry columns settle and wood posts lean, so the same opening can read differently from bottom to top. The gate is sized to the narrowest reading plus the clearance the hardware needs. Averaging the readings is how a leaf ends up rubbing one post.

Cutting and welding the frame

Artistic shot of a vintage rusty gate against a vivid blue sky with a bird flying overhead.

Gate frames are typically cut from square or rectangular tubing and tacked together on a flat table. The corners are checked with a square and a diagonal measurement before anything is welded solid. Pickets and scrollwork are then welded into the frame, which is how a wrought iron look is built from modern steel stock. Tacking first lets a crooked corner be corrected before the heat locks it in.

Sealing the joints

A fully sealed weld leaves no gap where water can sit. A stitch weld leaves crevices between the beads, and those can rust from the inside where nobody sees it. Hollow tubing should either be sealed completely or given drain holes so trapped condensation can escape. Near the marine layer, tubing breathes damp air every night, so this matters. A small drain hole at the low point of a tube does not weaken the frame.

Grinding, galvanized repair and powder coat

Welds are ground and cleaned before any coating goes on. Mill scale, spatter and oil all prevent good adhesion, and rust has to be removed back to bare metal first. Powder coat is sprayed as a dry powder that clings electrostatically, then the part is baked so the powder flows and cures into a continuous film. Welding on galvanized steel burns off the zinc at the weld, so that spot needs a zinc rich repair before topcoating.

Hanging the gate

On site, the hinges are aligned on a common vertical axis, checked with a plumb line through both pivots, so the leaf swings without binding. The gate should drift open and closed by hand and stay where it is placed. Only then does the operator or gate opener get mounted, because a motor will hide a bad hinge line until it burns out. A cantilever gate gets the same treatment on its rollers and track.