My husband and I cannot fault the service we received from design studio consultant Megan at the Central Coast showroom. She was so friendly throughout our initial emails, and couldn’t be more informative when I visited the showroom itself. I had been gathering multiple quotes from other local window suppliers and Megan really stood out from the rest.
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What is Double Glazing?
Leverage the power of advanced thermal performance and experience the difference of smaller electricity bills and enhanced comfort with Bradnam’s double glazed windows and doors.
Consisting of two glass panes bonded together by a spacer and separated by a hermetically sealed argon gas-filled space between 6 and 20mm wide, the double glazing process provides exceptional insulation by reducing the transfer of heat between indoor and outdoor environments. This carefully engineered gap improves performance in both heating and cooling climates, minimising heat loss in winter and heat gain in summer. The result is a more consistent internal temperature, reduced reliance on air conditioning, and a quieter, more energy-efficient home.
Why choose Double Glazing?
Double glazing is renowned for its ability to perform in both heating and cooling climates, reduce energy costs, minimise external noise, and limit condensation. At Bradnam’s, this innovation extends across our Essential, Signature, and Commercial ranges – delivering superior comfort and efficiency without compromising the style of your space. Tailored for flexibility, the range is available in various configurations, glass options, and hardware finishes to suit any context.
What our customers say
High-performance Double Glazing
When selecting energy-efficient windows and doors, two key factors matter most – U-value, and design. A lower U-value means stronger insulation and resistance to heat transfer, while a design that’s configured for optimised thermal performance enhances comfort and efficiency – reducing energy use and lowering electricity costs year-round.
| Products | U-value |
| Essential fixed window 52mm | 1.9 |
| Essential sliding window 67mm | 2.7 |
| Essential awning window 52mm | 2.8 |
| Signature sliding door 100mm | 2.3 |
| Signature French door 100mm | 2.8 |
To view more energy ratings for our windows and door, click on one of the links below.
Wide range of Double Glazing products
Windows
- Awning
- Bi-fold
- Casement
- Double Hung
- Fixed
- Gas Strut
- Sliding
Doors
- Bi-fold
- Entrance
- French
- Pivot (Framed door only)
- Sliding
Performance without compromising style
Bradnam’s double glazed range proves that exceptional thermal performance doesn’t come at the cost of style. With sleek, streamlined profiles that integrate effortlessly into any design, it maintains architectural symmetry with other Bradnam’s windows and doors while enhancing comfort and efficiency – showing that energy-smart windows and doors can be as visually appealing as they are functional.
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Boutique Homes
Smart Solution – Double Glazing
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Langford Jones Homes
Smart Solution – Double Glazing
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Englehart Homes
Smart Solution – Double Glazing
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Boutique Homes
Smart Solution – Double Glazing
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Wave Developments
Smart Solution – Double Glazing
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Boutique Homes
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Beachwood Homes
Smart Solution – Double Glazing
Upgrade to Thermal Break
Thermal break is the next evolution in energy-efficient design, offering superior insulation and performance beyond the double glazing range. By separating internal and external aluminium components with reinforced polyamide, it dramatically reduces heat transfer – delivering exceptional comfort, lower energy costs, and the ultimate upgrade in sustainable window and door technology.
Learn moreFixed window shown.
Frequently asked questions
Do you keep ready-made double glazed windows and doors in stock?
Who will install the double glazed windows and doors I ordered?
Do you sell timber double glazed windows and doors?
Do Bradnam’s offer AfterPay or payment plans?
Can I make changes to an order, like changing the frame colour, after it has been placed?
What kind of warranty will I receive?
Do my double glazed sliding doors need the stickers on the glass panels?
Can’t find the answer you’re looking for?
For answers to more questions about our company and products, visit our FAQs page.
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