Dog Door Installation 101 – MUST READ

Transcat Cat Door

Why we don’t cut holes in existing glass

If your window or glass door is currently float glass we could technically cut a hole in your existing glass. Reasons this is not possible is if it was a door, then that would not be to code (AS 1288:2021 glass in buildings). And even if it was legal the strength would be abysmal whether both window or a door. Additionally, it’s not safe for your dog.

If your window or glass door is laminated then cutting a hole isn’t like the movies, there’s a decent chance the panel will break whilst attempting to cut a hole for a dog door in the laminated glass.

Types of dog flaps

Small Dog Door flaps: This covers small dogs and cats. Dog Door flap size 195mm High x 185mm Wide

Pet-Tek Cat Door

Medium Dog Door Flaps: These sizes go up to a Beagle or Border Collie. Dog Door flap size 300mm x 270mm

Medium Sized Dog Door in Glass
One of the most common ways to install dog doors in homes

Large Dog Door Flaps: Best for Staffordshire Bull Terrier up to Golden Retriever/Husky. Dog Door flap size 425mm high x 295mm wide

Large Dog Door

Types of glass

We put back the same thickness of glass that was originally in the door or window. If it is a window often the glass is 3mm so we always put back a thicker safety glass instead.

Most of the time if you want a dog door in a sliding glass door, the current glass is 5mm toughened. Occasionally your door may be 6.38 or 4mm/6mm. We have found that replacing the same thickness, in safety glass, ensures rollers are not over-strained and original rubbers/gasket fits back perfectly leaving a seamless finish

In some cases, your doors and windows might be Low-E, which we will match to specification.

Hole cut out for a small dog door
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