Cat and Dog Door Installation in Glass in Dunedin – Pet Doors Cut into Toughened Glass Panels

Glass is the tidiest place for a pet door in a New Zealand home because it avoids cutting through a timber door or an exterior wall. The catch is that not every pane can be cut. Toughened glass shatters if you cut it after treatment, so a toughened panel has to be replaced with a new pane made with the hole already in it.

Toughened or not decides the job

Look for a small etched stamp in a corner of the pane. If it is there, the glass is toughened and it cannot be cut. A new pane is made to size with the hole already in it, which takes a few days and costs more.

Plain annealed glass, which is common in older laundry windows and back door panels, can be cut on site in one visit. We check before quoting so the price does not move.

Double glazed panels

A sealed unit cannot be cut without destroying the seal. The fix is a new unit manufactured with the aperture built in and the edge seal carried around it. It is a made to order item and worth doing properly, because a badly cut unit fogs within months.

Which door and where to put it

Microchip doors only open for your animal, which keeps the neighbourhood cats out of the kitchen. Magnetic collar doors are cheaper and work well enough for most.

Height matters more than people expect. Too low and the flap catches on the sill, too high and an older animal will not use it. We set it to the animal and not to the middle of the pane.

Getting a pet door right first time

Height, not centre

The flap should sit so the bottom is at or just below the animal's chest, not in the middle of the pane. Too low and it catches on the sill, too high and an older animal stops using it.

We set it to the animal rather than to the glass, which occasionally means an aperture that looks off centre and works perfectly.

What cannot be changed later

Toughened glass cannot be cut, drilled or enlarged after treatment, and a sealed unit cannot be cut at all without destroying the seal. Both mean a new pane made with the aperture already in it.

So the size, the position and the door model all have to be settled before the glass is ordered. Changing the model afterwards means starting again.

The cat and dog doors in glass process at Window and Glass Repair Dunedin in Dunedin

Supply and fit work is simple to describe and easy to get wrong at the measure, because nothing can be adjusted once the product is made.

1. Template at the measure

   The opening is measured and anything that is not a plain rectangle is templated. Cut outs, apertures and irregular shapes are recorded then, because they cannot be added afterwards. In older Dunedin housing very little is truly square.

2. Agree the specification in writing

   Product type, thickness, backing or mesh, edge finish and fixing method, all confirmed before anything is ordered so what arrives is what you expected.

3. Talk through the position

   Where the product goes affects both cost and performance. Putting a pet door into a smaller fixed pane rather than a large slider panel means a smaller replacement pane and a lower price, and it is worth looking at every option in the room.

4. Specify for humidity where it applies

   A mirror in a Dunedin bathroom needs a backing rated for moisture. Standard backing in a wet area with limited ventilation is the single most common reason we return to replace one within a few years.

5. Manufacture to order

   Almost everything in this category is made to your measurements, so there is a real lead time. Window and Glass Repair Dunedin confirms the date rather than estimating it.

6. Fit, fix and adjust

   Fitted square, fixed properly and adjusted so everything operates as it should. Window and Glass Repair Dunedin does not leave a product that functions but sits crooked.

7. Clean down and explain the care

   Site cleared, product cleaned, and you get told how to look after it. Most of what shortens the life of these products is being cleaned with the wrong thing.

Getting the details right in Dunedin

Small jobs are where corners get cut, because nobody inspects them and the consequences take years to appear.

Humidity is the enemy of most of these products

Cold rooms, limited ventilation and long winters mean bathrooms and laundries here stay damp far longer than they would further north. Specification has to reflect that rather than defaulting to the cheapest option.

Old openings are rarely square

In Victorian and Edwardian housing the opening has moved with the building. Templating rather than measuring two dimensions is the difference between a clean fit and a visible gap down one side.

Screens make windows get opened

Where insects or a cat are the reason a window stays shut, a screen is the cheapest ventilation improvement available. In a damp house that matters more than it sounds.

Safety glazing still applies

A shower screen, a splashback beside a hob and a pet door in a slider panel are all positions with requirements. Window and Glass Repair Dunedin specifies to the standard rather than to what is quickest.

What cat and dog doors in glass costs in Dunedin

Small supply and fit jobs are priced by the product and the measure, and the measure is where the cost is decided.

Made to order, always

Almost everything in this category is manufactured to your measurements, so the price follows the size and the specification rather than a catalogue. There is a real lead time and Window and Glass Repair Dunedin confirms the date rather than estimating it.

Where the position changes the price

Putting a pet door into a smaller fixed pane rather than a large slider panel means a much smaller replacement pane. Looking at every option in the room before choosing is often worth several hundred dollars.

Specification for wet areas

A mirror in a Dunedin bathroom needs a moisture rated backing, and a splashback beside a hob needs toughened glass. Standard product in a wet or hot position is the single most common reason we return within a few years.

Repair before replacement

A torn flyscreen in a sound frame is remeshed for a fraction of a new unit. The frame is the expensive part and it usually outlives several meshes, so Window and Glass Repair Dunedin quotes the remesh first.

Getting the specification right in Dunedin

Three decisions that are permanent once the product is made.

Edge finish and fixing method

A polished edge is clean and modern, a bevel reads traditional, and both are done at manufacture. Mechanical clips allow a mirror to be removed later, adhesive gives a cleaner look and is effectively permanent.

Mesh type on screens

Standard fibreglass for insects, heavier pet resistant mesh where a cat or dog pushes at it, and fine mesh where sandflies are a problem. Fine mesh lets less air through, which matters in a house you are ventilating to manage damp.

Safety glazing still applies

A shower screen, a splashback and a pet door cut into a slider panel are all positions with requirements under the standard. Window and Glass Repair Dunedin specifies to it rather than to whatever is quickest to source.

Fitting a pet door into glass in Dunedin

A pet door cannot be cut into an existing pane. Understanding why explains the whole job.

Toughened glass cannot be cut

Once glass is heat treated any attempt to cut or drill it shatters the whole pane. A pet door in a toughened panel means a new panel made with the hole in it.

A new panel is made to order

The pane is manufactured with the aperture already formed, sized to the pet door unit, then fitted into the existing frame. Allow lead time for manufacture.

Double glazed panels need a sealed collar

Putting a hole through a sealed unit means the cavity has to be sealed around the aperture at manufacture. It is a specific product and it is not something to improvise on site.

Choosing the right opening in a Dunedin home

Where it goes matters more than which unit you buy.

Panel choice affects cost

Putting the door into a smaller fixed pane rather than a large slider panel means a smaller replacement pane and a lower price. It is worth looking at every option in the room.

Security around the aperture

A pet door is an opening in the building envelope. Positioning it away from door locks and window catches matters, and lockable flaps are worth the small extra.

Draughts and thermal loss

Any flap leaks air. A brush sealed or magnetic closing unit reduces it, and siting the opening out of the prevailing wind reduces it further.

Cat and Dog Doors in Glass at a glance

Annealed glass

Cut on site, usually one visit

Toughened glass

New pane made with the aperture, several days

Double glazed

New sealed unit with the aperture built in and edges sealed

Door types

Standard flap, magnetic collar, microchip, dual scan

Sizes

Cat through to large dog

Finish

Aperture sealed and the panel refitted weathertight