Automated & Manual Gates
At NMI, we create beautiful, secure gates for your home or business.
Based in Whangarei, we service the whole of Northland and parts of Auckland. We are a local, family owned and operated, fabrication company, and we’ve been making exceptional gates for over 20 years. Our bespoke, made to order gates are fabricated locally in our workshop to perfectly fit your driveway and your needs.
Our team design, fabricate, install and automate high-caliber gates for your home or business:
- Automatic Gates
- Aluminium gates
- Farm Gates
- Wrought Iron gates
- Security gates
- Galvanised Steel gates
- Telescopic gates
- Commercial gates
- Pipe and mesh gates
- Solar powered gates
- Pool gates and fencing
- Electric Gates
- Bi-fold gates
- Sectional gates
All of our gates can be automated if you wish. Automating your entrance or driveway gate not only adds an extra level of security to your home or business, it is also a lot more convenient than the manual version. No more fiddling around with gates in the pouring rain.
Styles:
Most gates generally fall within one of 2 categories:
Swing gates:
Swing gates are one of the most popular choices for both residential and commercial properties due to their classic appearance and simple operation. These gates open inward or outward, similar to a door, which makes them an ideal solution for properties with ample space. When considering swing gates, it’s important to account for the arc required for the gate to fully open. This style works particularly well on flat surfaces where the gate can move without obstruction.









Swing gates can be designed as single or double-leaf gates, depending on the width of the entryway and your specific needs. Single-leaf swing gates are a great option for narrower driveways, while double-leaf gates can cover larger openings with ease. They can be automated for convenience, allowing for smooth and effortless access at the touch of a button. Whether you’re looking for something traditional or more contemporary, swing gates offer versatility in design, making them a timeless choice for enhancing both security and curb appeal.
An essential component of swing gates is the gate posts. These posts need to be robust and properly anchored, as they bear the weight of the gate and withstand the forces exerted during opening and closing. Well-installed gate posts ensure the long-term functionality and stability of the gate, contributing to both its aesthetic appeal and operational reliability.
Beyond their functionality, swing gates create a sense of grandeur as they open, making them an excellent choice if you’re looking to make a statement with your entrance. Their elegant motion and imposing presence can transform a simple driveway into a more welcoming and impressive entryway.
Automation options:
For swing gates, automation systems typically use linear drive or articulating actuator arms that attach to the gate posts, allowing the gates to open and close with a remote control, keypad, or smartphone app. The gates can also be integrated with additional security features like intercoms and sensors to create a comprehensive entry system tailored to your specific needs.
Swing gate automation is ideal for properties where a classic, grand entrance is desired, and the system can be customized to work with single or double-leaf gates.
All of our swing gate automation can either be run off a mains power supply, or we could install a solar power supply if there’s no way to get mains power to the gate.
Click here for more information on gate automation and the options we offer.
Sliding Gates
Sliding gates are a practical solution for properties where the terrain might not allow for the arc of a swing gate. Instead of swinging open, these gates slide horizontally along a track or a cantilever system, making them an excellent choice for properties with steep driveways or limited space behind the gate. Sliding gates are particularly useful in commercial settings or where driveways are close to the street, as they do not require additional space to open.






Sliding gates also offer a sleek, modern look and can be designed to complement various architectural styles. They can be automated for convenience, providing secure, hands-free access to your property. Their ability to maximize space efficiency without compromising security makes them a popular choice for both residential and commercial properties.
Sliding gates can be further broken down into 2 categories:
There are two main types of sliding gates: tracked and cantilevered.
Cantilevered gates
Cantilevered gates, on the other hand, are supported by rollers mounted on a counterbalance system, allowing them to “float” above the ground without the need for a track across the driveway, which can be beneficial in areas with difficult, uneven driveways or where keeping a track clear might be challenging.
Concrete requirements are another key consideration when installing sliding gates. Tracked sliding gates need a level concrete pad along the length of the gate’s path to ensure smooth and reliable operation. Any unevenness in the pad can affect the gate’s movement and potentially cause issues over time. For cantilevered gates, a heavy-duty concrete foundation is required to support the counterbalance mechanism. This foundation must be deep and sturdy enough to bear the weight and the cantilever forces, ensuring that the gate remains stable and functions correctly without sagging.
Sliding gates also offer a sleek, modern look and can be designed to complement various architectural styles. They can be automated for convenience, providing secure, hands-free access to your property. Their ability to maximize space efficiency without compromising security makes them a popular choice for both residential and commercial properties.
While standard sliding gates are a popular choice due to their space efficiency, we offer two additional options to cater to more specific needs: sectional sliding gates and telescopic sliding gates.
Sectional Sliding Gates
Sectional sliding gates consist of multiple panels that fold back on themselves as they open. This allows the gate to follow curves or corners in the driveway, making them ideal for properties with limited straight space or irregular layouts. They provide the same level of security and automation as standard sliding gates but offer greater flexibility in installation. Sectional gates are often chosen for properties with unique architectural features where a traditional sliding gate may not fit.
Telescopic Sliding Gates
Telescopic gates are designed to save even more space than regular sliding gates. The gate is divided into two or more sections that slide back in layers, with each section moving at different speeds to compactly stack behind each other. This is a perfect solution for driveways that require a longer gate but don’t have the room for a full-length sliding gate to retract. Telescopic gates provide both security and space-saving benefits, without sacrificing style or functionality.
Automation options:
Sliding gates, on the other hand, are automated using a motorized track or a cantilever system that drives the gate along its path. Sliding gate automation is known for its reliability and space-saving design, and it can also be controlled via remote access, keypads, or smart devices. These gates, like the swing gates, can also be integrated with additional security features like intercoms and sensors to create a comprehensive entry system tailored to your specific needs.
Same as swing gates, all of the sliding gate automation can either be run off a mains power supply, or we could install a solar power supply if there’s no way to get mains power to the gate.
Click here for more information on gate automation and the options we offer.