Understanding the nuances of double glazing can prevent costly mistakes often made due to misconceptions. At WindowsFactory, we clarify what double glazing entails by examining the various types of double-glazed units available. Moreover, selecting the appropriate window frame suited to Sydney’s unique climate is crucial to ensure the best possible performance and energy efficiency.
Understanding Double Glazed Windows for Better Efficiency
According to the Australian Government’s Department of Industry, Science, Energy and Resources, homes with double glazed windows can reduce energy usage for heating and cooling by up to 30%.
Double glazed windows can reduce heat loss by up to 50% compared to single-pane windows. This is especially beneficial in Sydney’s climate, where efficient heating in winter and cooling in summer are essential.
Understanding Double Glazing: What You Need to Know Before
Double glazed windows, also known as double-pane windows, feature two panes of glass separated by a space filled with air or inert gas like argon. This innovative design provides superior thermal insulation and soundproofing compared to single-pane windows. Double glazed windows also offer enhanced security, prevent condensation, and protect against harmful UV rays.
Optimising Double Glazed Windows for Sydney Climate
For most residential applications in Sydney, a U-value between 2 and 3 is recommended. To get comprehensive data and make informed decisions when choosing double glazed windows, a good starting point is the Windows and Doors Energy Rating website, which provides extensive information accessible to the public.
In mild climates like Sydney’s, north-facing glazing should have a high SHGC. East- and west-facing glazing should also manage solar heat gain effectively. The SHGC of south-facing glazing is less critical because there are lower solar heat gains from that direction in both winter and summer.
Insulglass Double Glazing Key Features
Insulglass Classic
Insulglass Classic offers superior insulation, reducing heating and cooling costs by maintaining interior temperatures. It provides enhanced acoustic properties, reducing noise pollution, and UV protection, preserving interior furnishings from fading. The range of glass types and thicknesses available allows for customization, and additional features like Argon gas and Warm Edge Spacers can enhance thermal performance. However, it is more expensive and heavier, requiring stronger frames and supports. It is ideal for residential and commercial buildings in both hot and cold climates where energy efficiency and noise reduction are priorities. Additionally, Insulglass Classic can incorporate low-emissivity (Low-E) coatings that reduce heat transfer and improve energy efficiency.
Insulglass LowE Prime
Insulglass Low E is more suited to the warmer Sydney climate. It features a low-emissivity coating that reflects heat, enhancing thermal performance and reducing glare and heat gain while maintaining natural light. This improves both U value and SHGC. It is available with durable pyrolytic coatings or more delicate vacuum-deposited thin film metal coatings. It is suitable for buildings with large glass facades, such as offices and modern homes, where solar control and energy efficiency are crucial.
Insulglass LowE Plus
LowE Plus is more suited to slightly cooler climates. Insulglass utilizes a spectrally selective coating that blocks more infrared light, providing superior solar control while maintaining excellent clarity and light transmission. It significantly reduces cooling requirements, though it is more expensive and requires precise installation. This glass is optimal for buildings in hot climates or with significant sun exposure, particularly for large windows.
Insulglass LowE Advance
Insulglass Low E Advance combines low-emissivity coatings with additional enhancements for improved thermal insulation and solar control, offering a balanced performance of light transmission, solar control, and energy efficiency. It is ideal for high-performance buildings aiming for green certifications or stringent energy efficiency requirements. This glass type can also be used in combination with toned or reflective glass to further enhance performance.
Insulglass LowE Max
Insulglass Max provides top-tier insulation, significantly reducing energy consumption, and offers superior noise reduction capabilities. However, its high cost and heavier weight necessitate specialized installation and frame reinforcement. It is perfect for luxury homes and commercial buildings where top-tier insulation and noise reduction are essential.
Insulglass IGU
Insulglass IGU is versatile and customizable for various applications, offering a good balance of insulation and cost. It may not provide the same performance level as specialized coated glass units but can incorporate Low-E, toned, or reflective glass for enhanced performance. It is suitable for general residential and commercial applications where moderate insulation and acoustic performance are needed.
Laminated Glass
Laminated glass holds shards together if broken, reducing injury risks and can address noise concerns to some extent while improving energy efficiency. It is essential in safety-critical areas like bathrooms, doors, and staircases but should be combined with double glazing for the best thermal performance.
In Sydney, we offer professional consultations to help you select the best double-glazed units for achieving optimal energy efficiency and comfort in your home.
Common Misconceptions About Double Glazed Windows and Condensation
However, many homeowners still face issues like condensation even after upgrading to double glazing. This frustration is frequently discussed in energy efficiency groups on social media, where people seek ways to improve their home’s insulation. The problem often lies in the assumption that double glazing alone will suffice, without considering the importance of the window frame.
We receive inquiries from Sydney homeowners who have upgraded from single-glass windows to double-glazed windows. They spend significant amounts of money, only to find that the condensation problem persists. Often, their new windows have aluminium frames, which conduct heat and cold effectively. Without a thermal break, aluminium frames can exacerbate condensation issues. In contrast, frames made from timber, uPVC, or thermally broken aluminium significantly reduce the likelihood of condensation.
Why Window Frames Matter for Double-Glazed Windows in Sydney’s Climate
The window frame contributes to 40% of a window’s total energy efficiency. Therefore, selecting the appropriate frame is just as crucial as choosing the right glazing. Common frame materials include:
- uPVC: Offers excellent insulation and durability. It’s also low maintenance and does not conduct heat, making it a superior choice for reducing condensation.
- Aluminium: While durable and strong, aluminium frames can conduct heat and cold, leading to condensation issues if not properly insulated with a thermal break.
- Wood: Provides good insulation and aesthetic appeal but requires regular maintenance to prevent deterioration.
Double-Glazed uPVC Windows in Sydney
At WindowsFactory, we specialize in uPVC frames for our double glazed windows, providing superior insulation and durability. Our uPVC frames, made from unplasticised polyvinyl chloride (rigid PVC), offer excellent thermal performance, often surpassing that of timber or thermally broken aluminium. These frames are not only long-lasting but also require minimal maintenance. They can be moulded into complex profiles, ensuring exceptional air seals. uPVC frames are already a standard choice in Europe and USA.
Custom uPVC Profile Laminates
uPVC profile laminates let you choose windows and doors that blend seamlessly with your home’s design while maintaining energy efficiency.
- Standard Finish: Our profiles, locks, mosquito nets, handles, and mechanisms come in classic white for a clean, traditional look.
- Extended Palette: Stay ahead of market trends with our aludec and woodec laminates, offering finishes that mimic wood and aluminium for a unique and custom appearance for your windows and doors.
Durable Double Glazed Windows with 5-Chamber Technology
The uPVC system with rebate gasket uses advanced 5-chamber technology and steel-reinforced profiles to provide excellent thermal insulation properties.
A wide range of accessories ensures a high level of system security. High-quality hardware and seals are essential for double glazed window durability and airtightness. Seals made from ethylene propylene diene monomer (EPDM) offer excellent sealing and long-lasting performance.
Fixed and retractable insect screens for double glazed windows and doors. Aluminum-framed with high-quality mesh, available in colours to match uPVC window frames.
Handles for Windows and Doors
Choosing the right handle is essential for the security, durability, and usability of your windows and doors. Quality handles ensure smooth operation and complement the style of any property. Our catalogues feature a wide range of options for tilt and turn, lift and slide, and balcony systems. Each model is designed to withstand Sydney’s climate and deliver long-term performance. Explore lockable, corrosion-resistant, and ergonomically designed handles for residential and commercial applications.
Versatile Double Glazed Window Frame Designs
10-Year
Warranty on Our Windows and Doors
6-Year
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Standard and Custom Sizes for Double Glazed Windows and Doors
Find all the standard sizes for double glazed windows and doors. These are the ones that we make every day. They are available on a short notice and can be delivered when you need it.
Should you require something out of our standard windows and doors range in a special size and colour, it is not a problem. Please email us your house plan or windows and doors schedule and we will work with you to ensure the lead time is suitable for you.
Custom Timber Reveals for Double Glazed Windows and Doors
Timber reveal is a timber surround fitted to the fin and used for installing a uPVC double glazed windows or doors into a stud opening. Depending on type of construction (brick veneer , double brick, weather boards) you might require different size of reveals. WindowsFactory can provide you with almost any reveals size, factory pre fitted on uPVC frame and delivered on site.
Top Quality uPVC Double Glazed Windows and Doors for Sydney Homes
Since 2011, WindowsFactory has been providing Sydney homeowners with high-quality uPVC double glazed windows and doors. We partner with leading European brands like Aluplast, Deceuninck, Schueco, Koemmerling, and Plustec, ensuring top-notch thermal insulation and durability. All products are locally manufactured for swift delivery and installation.
Fully licensed and insured, we provide personalized service with exclusive materials, tailored designs, and competitive pricing. Our professional installation and extended warranty guarantee long-term performance and comfort for your home.
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