Mould

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A CLEANER, HEALTHIER HOME STARTS WITH BETTER WINDOWS

uPVC and Double-Glazing Stops Mould, Reduces Condensation and Improves Your Home’s Energy Efficiency

Mould, condensation and cold drafts are signs that your home isn’t performing the way it should. Older aluminium or timber windows allow cold air, moisture and temperature fluctuations to creep inside, creating the perfect environment for mould to grow.

WARMER INTERNAL SURFACES = NO CONDENSATION = NO MOULD

Condensation is the number one cause of mould around windows. It forms when warm indoor air hits a cold surface — something that happens constantly with old single-glazed or aluminium windows.

Our uPVC windows and doors eliminate condensation as:

  • uPVC has very low thermal conductivity, meaning it doesn’t transfer cold like aluminium does.
  • Kommerling profiles use multi-chamber designs that trap air and boost insulation.
  • Your double glazing includes Low-E coatings, argon gas and warm-edge spacers, all of which keep the inner pane significantly warmer.

When the glass and frame stay warm, condensation simply can’t form — and without moisture, mould has nothing to feed on.

AIRTIGHT SEALS STOP MOISTURE AND HUMID AIR GETTING IN

Even tiny gaps around old windows can let humid outdoor air seep inside. That moisture settles on cold surfaces and becomes mould.

Our uPVC window and door systems prevent this through:

  • Continuous compression gaskets
  • Welded corners
  • Multi-point locking systems
  • Integrated drainage channels

These features create a tight, controlled seal that stops moisture entering your home and stops warm indoor air escaping.

UPVC IS NON-POROUS AND DOESN’T HARBOUR MOULD

Timber absorbs moisture. Aluminium sweats. Both create damp surfaces where mould thrives.

uPVC doesn’t.

  • It’s non-porous, so it doesn’t absorb water.
  • It doesn’t rot, swell or warp.
  • It doesn’t create cold spots that attract condensation.

This makes uPVC one of the most hygienic, mould-resistant window materials available.

IMPROVED ENERGY EFFICIENCY REDUCES HUMIDITY AND COLD SPOTS

Energy efficiency and condensation are directly linked. When your home stays warm and stable in temperature:

  • Humidity levels drop
  • Surfaces stay dry
  • Mould can’t grow
  • Heating costs go down

Your double glazing and Kommerling frames work together to create a consistent indoor climate, reducing the load on your heating and cooling systems.

PROTECTS YOUR WALLS, PLASTER AND WINDOW REVEALS LONG-TERM

Because your system prevents moisture from forming or entering the home, it protects the surrounding building materials:

  • No more peeling paint
  • No more damp sills
  • No more black mould spots
  • No more rotting timber reveals

This is especially important in Melbourne’s cool, damp winters, where older windows often create cold pockets that attract condensation.

A COMPLETE MOISTURE-CONTROL AND ENERGY-EFFICIENCY SYSTEM

When you combine:

  • Kommerling’s multi-chamber uPVC profiles
  • High-performance double glazing
  • Warm-edge spacers and Low-E coatings
  • Your airtight, fully sealed installation method

…you get a window system that:

  • Stops condensation
  • Prevents mould
  • Blocks moisture ingress
  • Improves energy efficiency
  • Reduces drafts
  • Stabilises indoor temperatures
  • Protects the building envelope
  • Creates a healthier, more comfortable home

This isn’t a temporary fix — it’s a long-term solution designed for Australian conditions and built to last decades.

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7 Star and Compliance

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ACHIEVING 7-STAR HOMES: HOW UPVC DOUBLE GLAZING HELPS YOU MEET MODERN ENERGY COMPLIANCE

With the introduction of stricter energy standards across Australia, including the shift toward 7-Star energy ratings under the National Construction Code (NCC), homeowners and builders are looking for smarter ways to meet compliance without compromising comfort or design. 

One of the most effective upgrades is installing uPVC double-glazed windows, which play a major role in achieving higher thermal performance and reducing overall energy demand.

WHY WINDOWS MATTER FOR 7-STAR RATINGS

Windows are one of the biggest contributors to heat loss and heat gain in a home. Poorly performing windows can account for up to 40% of a home’s heating and cooling energy use. Under the 7-Star standard, homes must demonstrate significantly improved thermal performance, and windows are a critical part of that calculation.

uPVC double-glazed windows deliver the insulation, airtightness, and efficiency needed to meet these stricter requirements.

SUPERIOR THERMAL PERFORMANCE FOR NCC COMPLIANCE

uPVC frames are naturally insulating, unlike aluminium, which conducts heat. When paired with double glazing, Low-E coatings, and argon-filled units, the system dramatically reduces heat transfer.

Key compliance benefits:

  • Lower U-values for improved thermal resistance
  • Reduced heat loss in winter
  • Reduced heat gain in summer
  • Better overall building envelope performance

LOW-E AND TOUGHENED GLASS FOR HIGHER STAR RATINGS

Modern glazing options play a major role in achieving compliance. Low-E glass reflects heat back into the home during winter and blocks unwanted heat in summer, improving the home’s energy score. Toughened glass adds durability and stability, helping maintain long-term performance without warping or distortion.

Together, these glazing upgrades support:

  • Higher energy ratings
  • Reduced reliance on heating and cooling
  • Improved comfort year-round

They also contribute to condensation control, which is now a key focus in NCC updates.

AIRTIGHT SEALS THAT SUPPORT BUILDING FABRIC REQUIREMENTS

The NCC’s 7-Star standard emphasises airtightness and reducing uncontrolled air leakage. uPVC windows excel in this area thanks to:

  • Continuous compression seals
  • Multi-point locking systems
  • Rigid, stable frames that don’t warp

This airtight performance helps maintain consistent indoor temperatures and supports compliance with condensation management requirements.

DURABILITY THAT SUPPORTS LONG-TERM COMPLIANCE

A 7-Star home isn’t just about meeting standards at the time of construction — it must maintain performance over decades. uPVC windows are designed to last 30+ years without warping, rotting, or corroding.

This long-term stability ensures:

  • Ongoing compliance with thermal performance expectations
  • No drop in efficiency over time
  • Reduced maintenance and replacement costs

It’s a future-proof solution for modern homes.

SUPPORTING BUILDERS AND HOMEOWNERS THROUGH THE COMPLIANCE PROCESS

Whether you’re building a new home or upgrading an existing one, uPVC double glazing helps you meet the requirements of:

  • NCC 2022 energy efficiency provisions
  • 7-Star NatHERS ratings
  • Condensation management standards
  • Thermal bridging and building fabric requirements

High-performance windows make it easier to achieve compliance without relying on expensive mechanical systems or complex design changes.

A SMARTER PATH TO 7-STAR LIVING

With rising energy costs and stricter building standards, choosing the right windows is more important than ever. uPVC double-glazed systems offer a simple, effective way to achieve 7-Star compliance while improving comfort, reducing energy use, and supporting long-term sustainability.

They’re not just a compliance requirement — they’re an investment in a more efficient, comfortable, and future-ready home.

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Advanced Security

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BUILT FOR SAFETY: HOW MODERN UPVC WINDOWS KEEP INTRUDERS OUT

When homeowners think about security, they often picture alarms, cameras, or motion sensors. But the first and most important line of defence is much simpler: the strength of your windows and doors. Modern uPVC frames paired with high-performance double glazing create a secure, reinforced barrier that dramatically improves home safety — without compromising style or comfort.

A STRONG, RIGID FRAME THAT RESISTS FORCED ENTRY

uPVC frames are engineered as a multi-chambered, reinforced structure, giving them exceptional rigidity. This makes them far more difficult to bend, pry, or force open compared to older timber or aluminium frames.

enviroglazewindows - EnviroGlaze Windows (Euro UPVC Windows)

Why this matters for security:

  • The frame doesn’t warp, swell, or corrode, so locks stay perfectly aligned
  • Reinforced internal steel add extra strength
  • Intruders can’t easily wedge tools between the sash and frame

A stable frame is the foundation of a secure window or door — and uPVC delivers that stability year-round.

MULTI-POINT LOCKING SYSTEMS FOR MAXIMUM PROTECTION

Most modern uPVC windows and doors come standard with multi-point locking. Instead of relying on a single latch, the system locks at several points along the frame, creating a tight, interlocked seal that’s extremely difficult to lever open.

HIGH-PERFORMANCE GLASS: LOW-E, TOUGHENED AND DOUBLE GLAZED

enviroglazewindows - EnviroGlaze Windows (Euro UPVC Windows)

Security isn’t just about the frame, the glass itself plays a major role. Modern double-glazed units combine two panes of glass with an insulated cavity, making them significantly harder to break through than single glazing. When paired with toughened safety glass, the system becomes even more resistant to impact. Toughened glass is heat-treated to be up to five times stronger than standard float glass, and if it does break, it shatters into small, blunt fragments rather than sharp shards.

Adding Low-E (low-emissivity) glass enhances performance further. While Low-E coatings are known for improving thermal efficiency, they also add a subtle security benefit: the coating slightly strengthens the pane and reduces visibility from outside during daylight hours, making it harder for intruders to assess what’s inside. Combined with a 20mm argon-filled spacer, the entire IGU becomes a robust, multi-layered barrier that slows down forced entry and increases overall home protection.

COMPRESSION SEALS THAT LOCK EVERYTHING IN PLACE

uPVC systems use continuous compression seals around the sash. When locked, the seals pull tight, creating a firm, interlocked connection between the sash and frame. This makes it significantly harder to pry the sash away or insert tools to force the window open.

MATERIALS THAT STAY STRONG OVER TIME

uPVC is naturally resistant to moisture, UV exposure, salt air, and temperature changes. This means the frame won’t weaken, warp, or corrode over time — ensuring locks stay aligned and the window remains secure for decades.

A COMPLETE SECURITY SYSTEM — BUILT INTO THE WINDOW

The real strength of uPVC and double glazing comes from how the components work together:

  • A rigid, reinforced frame
  • Multi-point locking hardware
  • Low-E and toughened double glazing
  • Continuous compression seals
  • Weather-resistant materials that don’t degrade
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Energy Efficiency

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THE WINDOW AND DOOR UPGRADE THAT PAYS FOR ITSELF

With rising energy costs and Melbourne’s unpredictable climate, homeowners are looking for smarter ways to keep their homes comfortable without relying heavily on heating and cooling. One of the most effective upgrades is installing uPVC frames paired with modern double glazing. This combination dramatically improves insulation, reduces energy use, and creates a more comfortable home all year round.

Here’s how uPVC double-glazed windows deliver real energy-saving results.

SUPERIOR INSULATION THAT KEEPS HEAT IN — AND OUT

uPVC is a naturally insulating material. Unlike aluminium, which conducts heat, uPVC helps maintain stable indoor temperatures by reducing heat transfer through the frame.

This means:

  • Your home stays warmer in winter
  • Your home stays cooler in summer
  • Your heating and cooling systems don’t have to work as hard

Better insulation equals lower energy consumption and lower bills.

DOUBLE GLAZING THAT BLOCKS HEAT LOSS

Double glazing adds another powerful layer of energy efficiency. Two panes of glass, separated by an insulated cavity, slow down heat movement dramatically.

Benefits include:

  • Reduced heat loss during cold Melbourne winters
  • Less heat entering during hot summer days
  • More consistent indoor temperatures throughout the year

When combined with uPVC frames, the entire window system becomes a high-performance thermal barrier.

LOW-E GLASS FOR MAXIMUM ENERGY SAVINGS

Low-E (low-emissivity) glass is one of the most effective upgrades for energy-efficient windows. A near-invisible coating reflects heat back into your home in winter and blocks unwanted heat in summer.

Low-E glass helps by:

  • Reducing heat loss through the glass
  • Minimising solar heat gain
  • Improving comfort without increasing energy use
  • Reducing fading of furniture and flooring

It’s a small addition that makes a big difference to your energy bills.

ARGON-FILLED UNITS FOR ENHANCED THERMAL PERFORMANCE

Most modern double-glazed units include argon gas between the panes. Argon is denser than air, which slows heat transfer even further.

The Result:

  • Higher energy efficiency
  • Better insulation
  • Improved overall window performance

This upgrade works quietly in the background, helping your home stay comfortable year-round.

REDUCED CONDENSATION FOR A HEALTHIER HOME

Energy-efficient windows also help reduce internal condensation. With warmer interior glass surfaces, moisture is less likely to form.

This means:

  • Less mould and mildew
  • Better indoor air quality
  • A cleaner, healthier living environment

Low-E coatings enhance this benefit even further.

LOWER ENERGY BILLS AND LONG-TERM SAVINGS

The combination of uPVC frames, double glazing, Low-E coatings, and argon gas creates a window system that significantly reduces your reliance on heating and cooling.

Homeowners typically experience:

  • Lower electricity and gas bills
  • Reduced wear on heating and cooling systems
  • Long-term savings that continue year after year

It’s an upgrade that pays for itself over time.

COMFORT YOU CAN FEEL EVERY DAY

Energy efficiency isn’t just about saving money — it’s about improving your lifestyle. With uPVC double glazing, you’ll enjoy:

  • A more stable indoor temperature
  • Fewer cold drafts
  • Less heat entering during summer
  • A quieter, more comfortable home

It’s a noticeable improvement from the moment the windows are installed.

A Smarter, More Sustainable Choice

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Eliminate Noise

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ELIMINATE UNWANTED NOISE

HOW UPVC DOUBLE GLAZING CREATES A QUIETER HOME

Living in Melbourne often means dealing with constant noise, traffic, trams, neighbours, construction, barking dogs, and busy streets. For many homeowners, unwanted noise isn’t just an annoyance; it affects sleep, comfort, and overall wellbeing. That’s why upgrading to uPVC frames with high-performance double glazing has become one of the most effective ways to create a quieter, more peaceful home.

Here’s how modern window technology dramatically reduces noise and transforms your living environment.

WHY NOISE GETS IN AND HOW UPVC STOPS IT

Most noise enters through old or poorly sealed windows. Gaps, thin glass, and lightweight frames allow sound waves to travel straight into your home.

uPVC double-glazed windows solve this by combining:

  • A rigid, multi-chambered uPVC frame
  • Two panes of glass with an insulated cavity
  • Compression seals that eliminate gaps
  • Optional acoustic upgrades like toughened or laminated glass

Together, these features create a powerful sound-blocking system.

DOUBLE GLAZING: TWO LAYERS OF PROTECTION

Double glazing is one of the most effective ways to reduce external noise. With two panes of glass separated by a sealed air or argon-filled gap, sound waves lose energy as they pass through each layer.

Benefits include:

  • Significant reduction in traffic and street noise
  • Less vibration and rattling
  • A quieter, more comfortable indoor environment

For homes near busy roads, schools, or commercial areas, the difference is immediate and noticeable.

UPVC FRAMES SEAL OUT SOUND

Unlike aluminium, which can vibrate and transmit noise, uPVC is naturally sound-insulating. Its multi-chambered design absorbs and disrupts sound waves before they reach the inside of your home.

This means:

  • No rattling during windy weather
  • No gaps for noise to leak through
  • Better acoustic performance year-round

The frame and glass work together to create a tight, noise-reducing barrier.

TOUGHENED AND LAMINATED GLASS FOR ENHANCED ACOUSTIC CONTROL

For homes in high-noise areas, upgrading the glass makes a big difference. Toughened glass is stronger and more rigid than standard glass, helping reduce vibration and sound transfer. Laminated glass goes even further — its internal acoustic layer absorbs sound waves, making it one of the best options for noise control.

These upgrades are ideal for:

  • Busy main roads
  • Near train lines or tram routes
  • High-density neighbourhoods
  • Homes close to airports or industrial areas

Combined with double glazing, they deliver exceptional noise reduction.

LOW-E GLASS: COMFORT AND QUIET IN ONE

While Low-E glass is known for energy efficiency, it also contributes to acoustic comfort. Its coating slightly increases the density of the glass, helping reduce sound transmission while improving thermal performance.

This means:

  • Less heat entering in summer
  • Less heat escaping in winter
  • A quieter, more comfortable home overall

It’s a smart upgrade that enhances both comfort and efficiency.

COMPRESSION SEALS THAT BLOCK OUT NOISE

uPVC windows use continuous compression seals around the sash. When the window is closed, these seals create an airtight fit that stops sound from leaking through tiny gaps.

The result:

  • Reduced wind noise
  • Less outside chatter and traffic hum
  • A more peaceful indoor environment

This is one of the biggest advantages over older timber or aluminium windows.

A NOTICEABLE DIFFERENCE YOU CAN FEEL IMMEDIATELY

Most homeowners notice the improvement the moment the new windows are installed. Rooms feel calmer, quieter, and more relaxing — especially bedrooms and living areas.

You’ll enjoy:

  • Better sleep
  • Less stress
  • More privacy
  • A peaceful home environment

It’s one of the most impactful upgrades you can make to your home.

THE SMART CHOICE FOR MELBOURNE HOMES

Whether you live on a busy street, near public transport, or simply want a quieter home, uPVC double-glazed windows offer a proven solution. With superior insulation, advanced glass options, and airtight sealing, they dramatically reduce noise and improve your overall comfort.

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Sustainable

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SUSTAINABLE WINDOWS FOR A GREENER FUTURE

HOW UPVC DOUBLE GLAZING REDUCES WASTE, ENERGY USE AND ENVIRONMENTAL IMPACT

More homeowners are looking for ways to make their homes more sustainable — not just through energy-efficient appliances, but through long-lasting building materials that reduce waste and environmental impact. 

Modern uPVC double-glazed windows are one of the most effective upgrades for creating a greener, more efficient home. They’re designed to last for decades, reduce energy consumption, and support a circular manufacturing process that keeps materials out of landfill.

RECYCLED MATERIALS THAT REDUCE ENVIRONMENTAL IMPACT

High-quality uPVC frames, such as those made by Kommerling, are produced using recycled materials wherever possible. 

Kommerling’s advanced manufacturing process allows old uPVC frames, offcuts, and production waste to be re-processed into new, high-performance profiles.

Sustainability benefits include:

  • Up to 90% reduction in greenhouse gas emissions when recycled pellets are used
  • Less reliance on virgin materials
  • A circular system that keeps uPVC out of landfill
  • Strong, durable frames that maintain structural integrity

END-OF-LIFE RECYCLING THROUGH RECONVERT

One of the biggest sustainability advantages of uPVC is its ability to be recycled up to 10 times without losing performance. Through programs like ReKonvert, old PVC-U windows and production waste are collected, processed, and turned back into usable material.

This means:

  • Old windows don’t end up in landfill
  • Materials are reused in new window systems
  • The environmental impact of manufacturing is significantly reduced

It’s a genuine closed-loop system — something aluminium and timber cannot match at the same scale.

LONG-LASTING PERFORMANCE THAT REDUCES WASTE

Sustainability isn’t just about recycled content — it’s also about longevity. uPVC windows are engineered to last 30+ years with minimal maintenance. They don’t rot, corrode, warp, or degrade, which means fewer replacements and less waste over the life of your home.

Long-term benefits:

  • No repainting or chemical treatments
  • No timber rot or aluminium corrosion
  • Fewer repairs and replacements
  • Lower lifetime environmental impact

A long-lasting product is one of the most sustainable choices you can make.

ENERGY EFFICIENCY THAT REDUCES YOUR CARBON FOOTPRINT

uPVC double glazing dramatically improves insulation, helping homeowners reduce their reliance on heating and cooling. This leads to lower energy consumption and a smaller carbon footprint.

Energy-saving features include:

  • Low-E glass that reflects heat
  • Argon-filled double glazing for superior insulation
  • Multi-chambered uPVC frames that reduce heat transfer
  • Airtight compression seals that prevent drafts

By reducing energy use, you’re reducing emissions — every single day.

THOUGHTFUL MATERIAL CHOICES FOR LONGEVITY AND ACCESSIBILITY

Every component in a modern uPVC window is selected with sustainability and usability in mind:

  • Durable hardware designed for long-term performance
  • Smooth, low-maintenance surfaces that require no harsh chemicals
  • Glazing options chosen for longevity and energy efficiency
  • User-friendly handles and mechanisms suitable for all ages and abilities

These deliberate choices ensure the product performs well for decades, reducing the need for replacement and minimising environmental impact.

QUALITY AND TESTING THAT ENSURES LONG-TERM SUSTAINABILITY

Sustainable design only matters if the product performs. That’s why uPVC windows undergo rigorous testing during manufacturing and installation, including:

  • Air-tightness testing
  • Water penetration testing
  • Structural performance checks
  • Thermal and acoustic performance verification

This ensures every window delivers long-term efficiency, durability, and sustainability.

A SMARTER, GREENER CHOICE FOR MELBOURNE HOMES

From recycled materials and closed-loop manufacturing to exceptional energy efficiency and long-lasting performance, uPVC double-glazed windows offer one of the most sustainable building solutions available today.

They help you:

  • Reduce energy use
  • Lower your carbon footprint
  • Minimise waste
  • Support circular manufacturing
  • Create a healthier, more efficient home

It’s a simple upgrade with a powerful environmental impact.

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Low Maintenance

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EFFORTLESS. ZERO MAINTENANCE. MAXIMUM COMFORT.

Homeowners today want windows that look great, perform well, and don’t require constant upkeep. That’s exactly where uPVC frames paired with modern double glazing stand out. Unlike timber or older aluminium systems, uPVC is designed to stay looking new with minimal effort — no sanding, no painting, no corrosion, and no ongoing maintenance costs.

Below is a clear breakdown of why uPVC double-glazed windows are the ultimate low-maintenance choice for Melbourne homes.

NO PAINTING, STAINING OR SEALING — EVER

Traditional timber windows need regular sanding, repainting, or re-sealing to protect them from moisture and UV damage. uPVC eliminates all of that.

With uPVC, you get:

  • A colour-fast surface that never needs repainting
  • Frames that won’t peel, crack, or fade
  • Long-lasting appearance with zero ongoing treatments

Once installed, the frames maintain their finish for decades with nothing more than a simple wipe-down.

RESISTANT TO WEATHER, MOISTURE AND SALT AIR

Melbourne’s climate can be unpredictable — heat, rain, coastal air, and cold snaps all take a toll on traditional materials. uPVC is engineered to withstand it all.

Key benefits:

  • Won’t warp, swell, or rot
  • Completely resistant to moisture and humidity
  • Ideal for coastal suburbs where salt air corrodes metal frames

This stability means your windows continue to open, close, and lock smoothly year-round.

EASY CLEANING WITH JUST SOAP AND WATER

Forget harsh chemicals or specialised cleaners. uPVC frames are designed for simple, effortless cleaning.

All you need is:

  • Mild soap
  • Warm water
  • A soft cloth

The smooth, non-porous surface resists dirt build-up, making it quick and easy to keep your windows looking fresh.

LOW-MAINTENANCE GLASS OPTIONS: LOW-E AND TOUGHENED

Modern double-glazed units also reduce maintenance on the glass itself. Low-E glass helps minimise internal condensation, keeping the glass clearer and reducing the need for frequent cleaning. Toughened glass is more resistant to scratches and damage, meaning it stays looking newer for longer and requires less care over its lifetime.

Together, these glass options create a durable, low-maintenance system that performs beautifully with minimal effort.

HARDWARE THAT STAYS SMOOTH AND RELIABLE

uPVC windows use high-quality stainless steel or corrosion-resistant hardware. Because the frames don’t warp or swell, the locks and hinges stay perfectly aligned.

This means:

  • No sticking
  • No jamming
  • No adjustments needed over time

Just smooth, reliable operation for years.

LONG-TERM SAVINGS WITH ZERO UPKEEP COSTS

Low maintenance isn’t just about convenience — it’s also about saving money. With uPVC, you avoid:

  • Repainting costs
  • Timber repairs
  • Corrosion treatment
  • Replacement of warped or swollen frames

The durability of uPVC means fewer repairs and lower lifetime costs compared to traditional materials.

A WINDOW SYSTEM THAT LOOKS AFTER ITSELF

uPVC double-glazed windows are designed to stay strong, clean, and functional with minimal effort. With weather-resistant frames, easy-clean surfaces, and durable glass options, they offer a long-lasting, low-maintenance solution that keeps your home looking great year after year.

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