Cats are independent by nature, and giving them easy outdoor access makes life easier for everyone. A cat door in glass is a tidy, discreet way to give your pet freedom while keeping your home light-filled, secure, and energy efficient.
Key Considerations for Cat Door Installations
1. Size and Fit
Measure your cat’s shoulder height and width before choosing a door, and allow a little extra room for comfort. While cats are usually smaller than dogs, breeds vary, so sizing matters.
2. Suitability for Glass
Not every cat door suits every glass type. Single glazing, double glazing, and sliding doors may all require different models or adaptors. Always check with a glazing expert before you buy.
3. Placement
The cat door should be installed at a comfortable height for your pet, and the surrounding glass must be strong enough to support it safely.
4. Safety Glass Requirements
If the panel is low to the ground, NZ safety standards may require toughened glass. This ensures durability, compliance, and peace of mind.
5. Security Options
Many Waikato homeowners choose microchip-activated doors. These only open for your cat, keeping out strays and possums. Lockable settings also give you control over access.
6. Weather Resistance
The Waikato climate brings humid summers and chilly winter mornings. Choose a cat door with quality seals to keep wind, rain, and draughts out while keeping warmth in.
7. Double Glazing
If your home has double glazing, a brand-new sealed unit must be manufactured with the hole pre-cut at the factory.
Cat Doors and Double Glazing
Double-glazed homes need a new sealed unit with the hole pre-cut. While this option costs more than single glazing, it ensures:
- Energy efficiency is preserved
- The unit remains fully sealed and under warranty
- Your home stays warm, dry, and secure
Learn more about our double glazing upgrades in Waikato.
How Much Does It Cost to Install a Cat Door in Glass?
The cost depends on several factors:
- Glass type – standard glass is more affordable, while toughened safety glass is usually required for compliance.
- Double glazing – a brand-new sealed unit must be manufactured with the hole pre-cut.
- Placement – the glass panel needs enough strength around the cut-out for safety.
💡 General price guide: For single-glass installations, cat doors typically start from around $180–$380 ($180 for standard to $380 for microchip). If your home has double glazing or safety glass requirements, prices usually range from $450–$700+ depending on the size of the panel and type of door.
Cat door installations are generally cost-effective, but costs rise if your glass needs upgrading to safety glass or if your home is double glazed.
For a personalised quote, contact our Waikato team and we’ll walk you through the best solution for your home.
Professional Cat Door Installation in Waikato
At Glasswise, our qualified team installs cat doors safely and compliantly into both single and double glazing. With years of experience across the Waikato, we help homeowners create practical, pet-friendly homes that stay warm, dry, and secure.
📞 Book your free consultation today
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🌐 www.glasswise.co.nz
📍 Locally owned & operated | Trusted Waikato experts | Proud partner of the RetroGlaze® network
FAQ:
Can a cat door be installed in double glazing?
Yes, but it requires a brand-new double glazing unit with the hole pre-cut at the factory.
How much does it cost to install a cat door in glass?
Costs depend on glass type, placement, and whether double glazing is involved.
Do I need safety glass for a cat door?
No, not necessarily but if the existing glass is safety glass then we will need to replace it with new safety glass with a pre-cut hole.
Can a cat door keep other animals out?
Yes, microchip-activated models only allow your cat to enter, keeping strays and possums out.