Tips and Key Steps for Installing a Gate in Your Yard

Looking to add a gate to secure your property and enhance your outdoor space? Before you buy, taking accurate measurements is crucial. This guide walks you through how to measure for your gate, choose between a swing or sliding model, and avoid common mistakes.

1. Measuring the Width Between Posts

Measure the inside distance between the two posts at three different heights:

A

Top

B

Middle

C

Bottom

Why three measurements? Posts may not be perfectly parallel—especially on older installations or if they've shifted over time.

Record the smallest of the three measurements—this is the usable width for your gate.
If the difference between measurements is greater than 1/2 inch, check that your posts are plumb before installing. For example: If you measure 119.3" at the top, 118.5" in the middle, and 119" at the bottom, use 118.5" as your width.

2. Measuring the Height from Ground to Underside of Post Cap

Next, measure the total height available from the finished ground up to the bottom of the post cap (or cover).

• • Take this measurement on both sides, as the ground may slope slightly.
• • The final gate height should be 2 to 4 inches less than the available height to allow clearance for hinges and opening.

Make sure the rack and gate motor can fit without interfering with the gate's height.

4. Checking the Level of the Ground

The ground should be flat and level across the full width of the gate.
If there's a slope:

• • You can open the gate outward (if allowed by local regulations),
• • Or choose a custom gate with adjustable hinges or an asymmetrical swing (one leaf narrower than the other).

Pro tip:
Use a spirit level or laser level to spot any height differences.
A slope greater than 3/4 inch per 3 feet can cause issues when opening the gate.

In Summary:

Measure the width between your posts at three heights (top, middle, bottom) for accuracy.
Note the available height from the ground to the post cap, leaving a 2 to 4 inch clearance.
Check that the ground is level and the posts are plumb before installing.
Plan for automation when measuring to avoid surprises during installation.
Choose a swing gate for wide, straight entries, or a sliding gate for tighter spaces or sloped ground.

If you're unsure, consider hiring a professional for on-site measuring—it's the best way to ensure a perfect fit.