What is the difference between an IGU and double glazing?

There is no functional difference — 'IGU' (Insulated Glass Unit) is the technical name for a double-glazed glass panel. It refers to two or more panes of glass separated by a sealed spacer and insulating cavity.

Is double glazing suitable for Perth's climate?

Yes. Perth combines hot summers with mild winters and coastal exposure, so both solar-heat management and thermal insulation matter. An appropriately specified IGU — often with a Low-E coating — helps reduce heat gain in summer and heat loss on cool nights.

Does double glazing keep summer heat out?

It can significantly reduce solar and radiant heat gain compared with single glazing, particularly when a Low-E coating is specified. The result also depends on window orientation, external shading, glass configuration and the whole window system, not the glass alone.

Can double glazing reduce traffic or aircraft noise?

An IGU with the right glass and lamination can reduce airborne noise transmission. It will not make a room soundproof — noise reduction depends on the whole building envelope, not the glass alone.

Does argon improve insulation?

Argon is denser than air and transfers heat more slowly across the sealed cavity, which can improve centre-of-glass U-value. The gain is most meaningful when paired with a Low-E coating.

Low-E ('low emissivity') glass has a microscopic metallic-oxide coating that reflects long-wave radiant heat while letting visible light through. Depending on the coating type, it can reduce solar heat gain, reduce heat loss, or both.

Can existing Perth windows be replaced with double glazing?

In most cases, yes. We start with an on-site measure to check the existing opening, the frame's structural condition and the access route, then confirm which uPVC replacement profile is appropriate for the reveal.

Can double glazing stop condensation?

It can reduce the likelihood of condensation forming on the interior pane by keeping the interior surface warmer, but it does not eliminate condensation. Persistent condensation usually points to a room ventilation or humidity issue.

How much does double glazing cost in Perth?

Every project is quoted from scratch because the price depends on the size and style of each opening, the glass configuration, spacer, hardware, colour, and installation complexity. Book a free measure and we'll return an itemised quote you can compare line-by-line.

Which window and door styles can be double glazed?

All of our uPVC window and door styles are compatible with insulated glass units — casement, awning, tilt-and-turn, sliding, fixed and bay windows, plus entry, French, sliding, bi-fold and smart-slide doors.

What warranty applies?

Warranty terms depend on the frame profile, glass configuration and hardware selected. We confirm the applicable warranty in writing with your itemised quote before you commit.

Double Glazing · Perth WA

Double Glazing
for Homes.

Hybrid Windows pairs Perth-supplied insulated glass units with our own locally fabricated, steel-reinforced uPVC frames — a complete, warranty-backed window and door system built for Western Australian homes.

Get a Free Measure & Quote Explore Windows & Doors

Side-by-side comparison of a single pane letting heat and sound pass through versus a double-glazed unit (DGU) with a Low-E coating, argon-filled cavity and warm-edge spacer that reflects heat and reduces sound transfer. — Single glazing vs double glazing — how glass layers, a sealed argon-filled cavity, a Low-E coating and a warm-edge spacer change the way heat and sound move through the window. Diagram is illustrative; exact spacer, gas fill and glass configuration are chosen per project.

How it works

Two panes. A sealed cavity. A properly built frame.

A double-glazed unit — technically known as an Insulated Glass Unit, or IGU — is made from two panes of glass separated by a sealed spacer and an insulating cavity. The cavity contains air, or optionally an inert gas such as argon, depending on the specification.

Continuous edge seals protect the cavity from moisture ingress. The IGU is then installed into a steel-reinforced uPVC frame, which contributes its own thermal insulation to the completed window or door.

Performance is a whole-system property — the glass configuration, spacer type, gas fill, frame profile and installation quality all matter. Comparing a glass-unit rating with a whole-window rating is not a like-for-like comparison.

Two panes
Typically 4–10 mm float, laminated or toughened glass, selected per opening.
Sealed spacer
Warm-edge thermoplastic, Super Spacer or aluminium — spacer choice affects edge performance.
Insulating cavity
Usually 8–20 mm; air or argon depending on configuration.
Edge seals
Continuous primary and secondary seals protect the cavity from moisture.
uPVC frame
Multi-chambered, steel-reinforced profile that contributes its own insulation value.
Whole system
The completed window's performance is set by the sum of all these parts, plus the install.

Perth-manufactured DGU glass

Perth-manufactured insulated glass units.

The insulated glass units used in our double-glazed windows and doors are supplied by Tough Glass, a Perth-based glass manufacturer that fabricates its ToughEco IGU range locally. That means the DGU in every Hybrid window is manufactured in Western Australia — no interstate shipping, no long lead times on standard configurations.

Depending on the selected project specification, the sealed cavity may contain air or argon; the spacer may be a warm-edge thermoplastic, a Super Spacer or aluminium; and the glass configuration itself may combine clear, toughened, laminated, acoustic and Low-E performance glass in the panes you need.

Hybrid Windows remains responsible for the consultation, measure, frame fabrication, complete window manufacture, installation and aftercare — Tough Glass supplies the DGU component itself.

For Perth homes

What double glazing changes about a Perth home.

The exact benefit for your home depends on the glass configuration, frame, orientation and installation — but the categories of improvement are consistent.

Reduced heat transfer

Two panes plus a sealed insulating cavity slow the movement of heat compared with a single pane of the same glass thickness.

Better year-round comfort

Rooms hold their temperature longer, so bedrooms stay cooler in summer and living spaces feel less draughty in winter.

Less reliance on heating & cooling

By reducing conductive and radiant heat exchange, insulated glass units help lower the workload placed on air-conditioning and heating.

Improved noise control

With the appropriate glass configuration and installation, an IGU can reduce airborne sound transmission. Actual result depends on the selected configuration.

Reduced condensation risk

A warmer interior pane reduces the likelihood of condensation forming — though it does not eliminate condensation in every scenario.

Security & safety options

Laminated or toughened glass configurations can be specified for openings where safety or forced-entry resistance matters.

uPVC frames themselves are also resistant to corrosion and coastal salt exposure, which matters for Western Suburbs and Peel-region homes.

Glass configuration options

Five IGU configurations, mixed and matched per opening.

The right configuration depends on the opening's orientation, the room's use, and what problem you're trying to solve. Below are the common options and where each is typically the right call.

Configuration	Suitable applications	Main benefit	Specification considerations
Standard clear DGU	General residential windows and doors where thermal improvement over single glazing is the primary goal.	Baseline insulating performance from two panes and a sealed cavity — the entry point into double glazing.	Consider Low-E and/or argon upgrades if solar heat gain or U-value is critical to the room.
Low-E DGU	West- and north-facing openings; rooms where reducing solar heat gain and radiant heat loss both matter.	A microscopic low-emissivity coating on one pane reflects long-wave radiant heat and can also reduce solar heat gain.	The specific Low-E coating chosen influences both U-value and SHGC — confirm the configuration against your energy report.
Argon-filled DGU	Openings where a modest improvement in centre-of-glass U-value is worth the additional specification.	Argon is denser than air, so it transfers heat more slowly across the sealed cavity.	Argon typically pairs with Low-E for a meaningful gain. Some very small units may not accept an argon fill.
Acoustic laminated DGU	Homes near main roads, freight routes or flight paths; media rooms; bedrooms facing a busy street.	An acoustic PVB interlayer inside a laminated pane damps sound-wave transmission through the glass.	Acoustic result depends on the whole system — frame, seals, wall construction, and installation quality all matter.
Safety / security glass	Low-level glazing, doors, wet areas, and any opening where a person could reasonably fall against the pane.	Toughened (heat-treated) glass breaks into small blunt fragments; laminated glass holds together when broken.	Meeting AS 1288 / AS/NZS 2208 depends on the specific product — confirm the certification stamp on the supplied unit.

Numerical values (U-value, SHGC, Rw) depend on the exact configuration, whole-window build and installation. We publish figures only when supported by an applicable certificate or test report — see Verified performance & certifications.

Windows & doors

Every Hybrid product can be double glazed.

Double glazing is a glass-and-cavity specification — not a separate product line. It's available across every window and door style we manufacture.

See the full range

Awning windows
Casement windows
Tilt-and-turn windows
Sliding windows
Fixed windows
Bay windows
Entry doors
French doors
Sliding doors
Bi-fold doors
Smart-slide doors

Replacement vs new builds

Two very different projects. One product platform.

Replacement projects

Retrofitting existing openings.

On-site measure of every existing opening
Removal of the existing frames without damaging the surround
Assessment of the reveal, structural opening and access route
Manufacture of the replacement frames and glass off-site
Installation, sealing and finishing — including waste removal

New builds

Coordinated with your builder.

Review of plans, energy report and window schedule
Scheduling frames against the builder's window-fix stage
Coordination with the builder, glazier and site supervisor
Confirmation of opening sizes and rough-in tolerances
Delivery and installation timed with the site programme

Installation process

From consultation to aftercare.

Overall timing depends on project size, the selected glass configuration, our current manufacturing schedule and site conditions. We confirm dates in writing once the project scope is agreed.

Step 01
Consultation & project assessment
We take a brief, look at plans or existing openings, and understand what problem you're solving.
Step 02
Site measure or plan review
For replacements, a senior measure. For new builds, a schedule check against approved plans.
Step 03
Frame, glass, spacer & hardware selection
You choose the profile, glass configuration, spacer type and hardware from options that suit the project.
Step 04
Itemised quotation
Every line — profile, glass, spacer, hardware, install — is broken out so nothing is buried.
Step 05
Local manufacture
Frames are fabricated in our Landsdale workshop; IGUs are supplied by Tough Glass in Perth.
Step 06
Installation
Our own two-person install crews. No subcontractors on install day.
Step 07
Final inspection & aftercare
A walk-through at completion; ongoing aftercare via the showroom.

Cost factors

Every project is quoted from scratch.

We deliberately don't publish square-metre price ranges — they mislead more often than they help. The final quote depends on a set of independent variables, and every one of them is broken out on your itemised quote.

Get a free measure & quote

Window or door dimensions
Opening style
Number of units
Glass thickness and configuration
Low-E coating
Argon fill
Acoustic or laminated glass
Toughened safety-glass requirements
Spacer selection
Frame colour and finish
Hardware
Access, removal and installation complexity

Verified performance & certifications

The numbers we'll publish — and how.

We publish U-value, SHGC, WERS, acoustic (Rw), AS 2047 compliance, safety-glass certification and warranty information only when it is supported by an applicable certificate or test report for the exact configuration we're offering you. Where a figure is not yet supported by paperwork we can share, it stays off this page.

Awaiting configuration

Because every project uses a slightly different frame, glass and spacer combination, whole-window U-value, SHGC, Rw and WERS results are supplied against the specific configuration we quote you. Applicable certificates are provided with the itemised quote.

Whole-window U-value: Lower is better — indicates less heat transfer through the whole window.
SHGC: Lower is better for solar control — a smaller share of solar heat passes through.
WERS ratings: Window Energy Rating Scheme — comparable star rating for windows in Australia.
Acoustic (Rw): Higher is better — greater resistance to airborne sound transmission.
AS 2047 compliance: Australian Standard for windows and external glazed doors.
Safety-glass certification: AS/NZS 2208 stamp visible on the glass unit.

Acoustic (Rw) — typical glass-unit ratings

Acoustic ratings are supplied per the exact configuration quoted. Glass-unit Rw values are set by the glass supplier; the whole-window and installed-building acoustic result depends on the complete system, including frame, seals and the building envelope. We'll share supplier documentation with your itemised quote.

Frequently asked questions

Double glazing questions we get every week.

What is the difference between an IGU and double glazing?: There is no functional difference — 'IGU' (Insulated Glass Unit) is the technical name for a double-glazed glass panel. It refers to two or more panes of glass separated by a sealed spacer and insulating cavity.
Is double glazing suitable for Perth's climate?: Yes. Perth combines hot summers with mild winters and coastal exposure, so both solar-heat management and thermal insulation matter. An appropriately specified IGU — often with a Low-E coating — helps reduce heat gain in summer and heat loss on cool nights.
Does double glazing keep summer heat out?: It can significantly reduce solar and radiant heat gain compared with single glazing, particularly when a Low-E coating is specified. The result also depends on window orientation, external shading, glass configuration and the whole window system, not the glass alone.
Can double glazing reduce traffic or aircraft noise?: An IGU with the right glass and lamination can reduce airborne noise transmission. It will not make a room soundproof — noise reduction depends on the whole building envelope, not the glass alone.
Does argon improve insulation?: Argon is denser than air and transfers heat more slowly across the sealed cavity, which can improve centre-of-glass U-value. The gain is most meaningful when paired with a Low-E coating.
What is Low-E glass?: Low-E ('low emissivity') glass has a microscopic metallic-oxide coating that reflects long-wave radiant heat while letting visible light through. Depending on the coating type, it can reduce solar heat gain, reduce heat loss, or both.
Can existing Perth windows be replaced with double glazing?: In most cases, yes. We start with an on-site measure to check the existing opening, the frame's structural condition and the access route, then confirm which uPVC replacement profile is appropriate for the reveal.
Can double glazing stop condensation?: It can reduce the likelihood of condensation forming on the interior pane by keeping the interior surface warmer, but it does not eliminate condensation. Persistent condensation usually points to a room ventilation or humidity issue.
How much does double glazing cost in Perth?: Every project is quoted from scratch because the price depends on the size and style of each opening, the glass configuration, spacer, hardware, colour, and installation complexity. Book a free measure and we'll return an itemised quote you can compare line-by-line.
How long does manufacture and installation take?: Timing depends on project size, the selected glass configuration, our current manufacturing schedule and site conditions. We give you a confirmed date once the project scope is locked in.
Which window and door styles can be double glazed?: All of our uPVC window and door styles are compatible with insulated glass units — casement, awning, tilt-and-turn, sliding, fixed and bay windows, plus entry, French, sliding, bi-fold and smart-slide doors.
What warranty applies?: Warranty terms depend on the frame profile, glass configuration and hardware selected. We confirm the applicable warranty in writing with your itemised quote before you commit.

Ready when you are

Ready to double glaze your home?

Book a free on-site measure and we'll bring profile samples, spacer options and glass swatches. You'll leave with an itemised quote — no lock-in, no pressure.

Request a Free Measure & Quote Book a Landsdale Showroom Visit

1800 366 742

14 Christable Way, Landsdale WA 6065