Cat Flap Installation in Double Glazing

We replace your sealed unit with a new one made to accommodate a cat flap — the correct and safe way

Can You Cut a Cat Flap Into Existing Double Glazing?

No.
Double glazed units cannot be cut after they are manufactured.
Attempting to cut into existing glass will:

The correct solution is to replace the entire sealed unit with a new one manufactured with a pre-cut hole for the cat flap.

At RUK Glazing, we supply and install made-to-measure sealed units designed specifically for cat flap installation.

Simple & Professional Process

Measure & Order

We measure your existing sealed unit accurately.

Manufacture

A new double or triple glazed unit is manufactured with a precision-cut aperture for your cat flap

Professional Installation

We remove the existing glass and install the new sealed unit securely. Your frame remains intact

We Install Cat Flaps In:

uPVC doors

Patio door glass

French doors

Fixed glass panels

Side panels next to doors

All sealed units are made to measure to match your existing frame.

Safety Glass & Options Available

Cat flap installations often require: c

We ensure your new sealed unit complies with safety requirements.
You can also upgrade to:

Professional Cat Flap Glass Installation

Before – Standard sealed unit

After – New sealed unit with integrated cat flap

Replacing the glass ensures a clean, secure and professional finish.

How Much Does It Cost to Install a Cat Flap in Double Glazing?

The price depends on:

Because a new sealed unit must be manufactured, the cost reflects the replacement glass rather than a simple cut.

For a tailored quote:

Cat Flap Glass Installation Across Leicestershire & The Midlands

RUK Glazing is based in Leicestershire and covers:

And surrounding Midlands areas.