Security Doors NZ: Grille vs Mesh, Cost and How to Choose

A security door lets you lock the front of the house and still leave the main door open for a breeze. In New Zealand there are two common ways to build one in aluminium: a diamond pattern security grille door, or a fine 316 stainless steel mesh door. Both give you airflow behind a locked barrier. The right one for your home comes down to the view you want, how close you are to the coast, and your budget. This guide compares the options so you can shortlist before you ask for a quote.

See the range and check sizing: browse the full security door and window range, or talk to the team about the exact opening you need to cover.

Grille vs mesh at a glance

Each style solves the same problem in a different way. Use this table to narrow the field, then read the section that matches your shortlist.

Option	Best for	View and airflow	Coastal	Indicative from price
Aluminium grille door	Budget conscious, strong visual deterrent	Good airflow, visible pattern	Powder coat handles most sites	Panel from about $420, framed from about $900
316 stainless mesh door	Clear view, exposed coastal homes	Good airflow, near clear view	Marine grade stainless resists salt	Panel from about $660, framed from about $1,030
Fixed security window	Windows you want to leave open safely	Ventilation without an opening left unguarded	Match mesh or grille to the door	From about $280

• Grille doors lead on price and give a strong visual barrier.
• Stainless mesh doors lead on a clear outward view and coastal life.
• Fixed security windows extend the same protection to opening windows.

Aluminium grille security doors

A security grille door uses a powder coated aluminium diamond grille set in a hinged frame. The pattern is a clear visual deterrent, it moves air well, and aluminium does not rust the way a steel screen can. Because the grille is a solid extruded pattern rather than a woven mesh, it is the more affordable way to add a locked barrier, which is why it suits a back door, a garage entry, or any opening where a clear view through the door matters less than value.

Grille doors come in standard heights around 1980mm with widths from roughly 810mm to 960mm, so they cover most single door openings. You can buy the panel on its own to hang in a frame you already have, or as a panel supplied with its own frame for a full replacement. If you want the same look across the house, the grille pattern is also sold as a grille sheet for windows and custom panels.

• The lowest cost way to add a hinged, lockable barrier.
• Powder coated aluminium resists corrosion and needs little upkeep.
• Best where value and airflow matter more than a clear view.

316 stainless steel mesh security doors

A 316 stainless steel mesh door swaps the visible grille for a fine woven mesh in an aluminium frame. The mesh is tight enough to be a physical barrier yet fine enough that you look straight through it, so the view from inside stays clear and the door reads as a screen rather than a cage. The 316 grade is marine specification stainless, which is the detail that matters on exposed and coastal sites where salt pits cheaper screens over time.

Mesh doors carry a premium over grille doors for the stainless and the finer construction, and they use the same standard sizes and the same panel only or framed options. If your home faces the sea, or you simply want the cleanest possible outlook, the stainless mesh door is the one to shortlist.

• Near clear outward view, so the door reads as a screen not a barrier.
• 316 marine grade stainless mesh resists coastal salt corrosion.
• A step up in cost from a grille door for the view and the coastal life.

Panel only or supplied with a frame

Both door styles are sold two ways, and picking the right one keeps the cost sensible. A panel only door is the leaf on its own, ready to hang in a sound existing frame, which suits a straight swap of a tired screen. A door supplied with its own frame is the full assembly for a new opening or where the old frame is out of square or damaged. As a rule the framed option adds a few hundred dollars over the panel, so it pays to check the condition of your existing frame before you order.

• Panel only: cheapest, for a sound existing frame and a like for like swap.
• With frame: full assembly for a new opening or a worn out frame.
• Measure the existing frame for square before choosing panel only.

What makes a door secure, beyond the door

The screen is only one part of the job. The lock does as much work as the mesh or grille, so pair the door with a deadlock rather than a basic latch, and check that the hinges are fixed with screws that cannot be slipped from outside. The frame needs to be fixed firmly into solid framing or masonry, not just the door lining, because a barrier is only as strong as what it is bolted to. On a coastal home, specify marine grade or stainless hardware to match the door so the fixings last as long as the screen.

• A deadlock turns a screen into a genuine barrier.
• Fix the frame into solid framing or masonry, not the lining alone.
• Match the hardware grade to the door on coastal sites.

Sizing and measuring

Most stock security doors are around 1980mm high with widths from about 810mm to 960mm, which covers the common single door opening. Measure the width at the top, middle and bottom of the opening and use the smallest figure, then measure the height on both sides. If your opening falls outside the stock range, or you want to protect a wider or double door, the same grille and mesh are made to order, and fixed security windows use the same construction so the whole elevation can match. Share your measurements with the team and they can confirm the closest stock size or quote a custom panel.

What security doors cost in NZ

Price tracks the style, the size and whether you buy the panel or the full framed assembly. As a guide, aluminium grille doors are the entry point, with a panel only leaf from around $420 and a framed door from around $900. A 316 stainless mesh door sits higher for the marine grade material, from around $660 for a panel only leaf and from around $1,030 framed. Fixed security windows start lower, from around $280, and grille sheet for custom panels runs from around $115. Wider openings, custom colours and made to order sizes carry a premium over stock. Prices move, so treat these as a starting point and check the current figure on the product page or in a measured quote.

• Grille doors are the value option, mesh doors the premium.
• The framed assembly adds a few hundred over the panel only price.
• A measured quote is the reliable price for your exact opening.

Frequently asked questions

Are grille or mesh security doors more secure?

Both are built as a physical barrier, and the bigger factor is the lock and how the frame is fixed rather than grille versus mesh. A grille gives a stronger visual deterrent, while a fine stainless mesh gives a clearer view. Pair either with a deadlock and a frame fixed into solid framing for the best result.

Which security door suits a coastal home?

A 316 stainless steel mesh door is the usual pick near the sea, because the marine grade stainless resists the salt that pits cheaper screens. If you choose an aluminium grille door instead, specify a quality powder coat finish and stainless or marine grade hardware so the fixings keep pace with the door.

Can I fit a security door to my existing frame?

Often yes. If the existing frame is sound and square, a panel only door is made to hang in it, which is the most economical option. If the frame is worn, damaged or out of square, choose the door supplied with its own frame so the whole assembly sits and locks properly.

Do security doors let air through?

Yes, that is the point of them. Both the diamond grille and the stainless mesh are open enough to move air while staying locked, so you can leave the main door open for ventilation without leaving the opening unguarded.

What sizes do security doors come in?

Stock doors are around 1980mm high with widths from about 810mm to 960mm, covering most single openings. Wider, double and custom sizes are made to order, and matching fixed security windows use the same construction.

Next step

Shortlist grille or mesh, measure your opening, and let the team price the exact configuration. Browse the security door range or the wider aluminium doors range, then contact us for a measured quote and stock check at Albany or Manukau. For the full picture on entry, sliding and double doors, see our guide to choosing aluminium doors.