Blog

Mar 11, 2020

Sydney is generally considered to have a mild climate which allows us to often forget how cold our homes actually get. With most homes designed to stay cool in summer ...

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Dec 19, 2019

Thank you and season's greetings

As we have approached the end of 2019, we are taking a short break. Our head office will be closed from Friday 20th December 2019 to Monday 6th January 2020 ...

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Nov 25, 2019

Magnetite exhibited noise reduction solution at the Australian Acoustic Conference 2019

Magnetite Australia exhibited its noise reduction solutions at the Australian Acoustic Conference 2019 at Mornington Peninsula, VIC this month. With the conference theme of "Sound Decisions: Moving Forward with Acoustics", ...

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Oct 27, 2019

Magnetite supports Paralympian Gold Medalist Katie Kelly to Tokyo

Sydney, October 2019: We are proud to announce our support for Rio Paralympian Gold medallist in Para-triathlete, Katie Kelly as she heads towards qualifying for her second Paralympics, Tokyo 2020 ...

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Oct 4, 2019

Magnetite at Sydney Home Show 2019

Magnetite is showcasing its secondary glazing solution at the upcoming Home Show at ICC Darling Harbour from Friday 18th- Saturday 20th October 2019, Stand E12 Magnetite has been operating in the Sydney ...

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Aug 29, 2019

Magnetite’s Exceeding Customer Expectation of Comfort Recognised at the Australian Business Awards 2019

Sydney, August 2019: Magnetite (Australia) has been recognised at the Australian Business Awards 2019 as the winner in the Service Excellence category for their Exceeding Customer Expectation of Comfort initiative. ...

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Jul 12, 2019

Magnetite at No Vacancy Expo 2019

In 2018, 9.2 million overseas tourists visited Australia and it is projected to grow over 10 million this year. The rich art, multiculturalism and food not to mention the pristine ...

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Jan 14, 2019

New Year’s Resolution for Your Home

People image created by Freepik And just like that, it’s 2019! Ringing in the New Year has always been an exciting time – the energy shifts, the promise and hope ...

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Nov 29, 2018

Visiting Magnetite’s newest franchise in Singapore

Nov 29, 2018 Written by Magnetite Australia Following the opening of Magnetite Singapore, Adrian Lafleur of Magnetite recently flew over to Singapore to meet the team at PLACE Group. Apart from meeting ...

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Nov 26, 2018

Magnetite retrofit double glazing is now available in Singapore

Sydney, November 2018: Magnetite retrofit double glazing is now available in Singapore Australia’s leading secondary window system, Magnetite has finally arrived in Singapore. Magnetite is proud to announce its alliance with ...

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Nov 20, 2018

Freemantle’s boutique hotel Magnetite its heritage windows

The National Hotel was a branch of The National Bank of Australasia in the early 1880s before it demolished and rebuilt in 1903. In 2007, this iconic landmark was destroyed ...

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Aug 30, 2018

3 Reasons to Retrofit Secondary Glazing on Your Next Home Improvement Project

Replacing windows in existing homes can be a hassle, especially for heritage or strata homes. Existing homes can achieve thermal, acoustic and economic benefits of double glazing by retrofitting with ...

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Glazing Type	Cooling Stars	Heating Stars	Cool%	Heat%	Uw	SHGC
Single glazed 3mm clear glass*					7.4	0.77
Single glazed 3mm clear glass & 4.5mm Magnetite			35%	59%	2.9	0.67

Glazing Type

Cooling Stars

Heating Stars

Cool%

Heat%

SHGC

Single glazed 3mm clear glass*

7.4

0.77

Single glazed 3mm clear glass &
4.5mm Magnetite

35%

59%

2.9

0.67

Glazing Type	Cool%	Heat%	Uw	SHGC
Single glazed 3mm clear glass*	20%	28%	5.5	0.69
Single glazed 3mm clear glass & 4.5mm Magnetite	37%	61%	2.6	0.66
Single glazed 3mm clear glass with Solartite** and 4.5mm Magnetite	76%	45%	1.8	0.20

Glazing Type

Cooling Stars

Heating Stars

Cool%

Heat%

SHGC

Single glazed 3mm clear glass*

20%

28%

5.5

0.69

Single glazed 3mm clear glass &
4.5mm Magnetite

37%

61%

2.6

0.66

Single glazed 3mm clear glass with
Solartite** and 4.5mm Magnetite

76%

45%

1.8

0.20

Glazing Type	Cooling Stars	Heating Stars	Cool%	Heat%	Uw	SHGC	AI
Double Glazed 3mm clear glass/12mm air gap/3mm clear glass IGU (Insulated Glass Unit)*			40%	55%	3.0	0.61	5.0
Single glazed 3mm clear glass & 4.5mm Magnetite			37%	61%	2.6	0.66	0.5

Glazing Type

Cooling Stars

Heating Stars

Cool%

Heat%

SHGC

Double Glazed 3mm clear glass/12mm air
gap/3mm clear glass IGU (Insulated Glass Unit)*

40%

55%

3.0

0.61

5.0

Single glazed 3mm clear glass &
4.5mm Magnetite

37%

61%

2.6

0.66

0.5

Glazing Type	Cooling Stars	Heating Stars	Cool%	Heat%	Uw	SHGC	AI
Double Glazed 5mm Supertoned glass/6mm air gap/5mm clear glass IGU (Insulated Glass Unit)*			54%	425%	3.30	0.461	5.0
Single glazed 3mm glass Solartite** and 4.5mm Magnetite			73%	38%	2.4	0.19	0.5

Glazing Type

Cooling Stars

Heating Stars

Cool%

Heat%

SHGC

Double Glazed 5mm Supertoned glass/6mm
air gap/5mm clear glass IGU (Insulated Glass Unit)*

54%

425%

3.30

0.461

5.0

Single glazed 3mm glass Solartite**
and 4.5mm Magnetite

73%

38%

2.4

0.19

0.5

Noise Reduction Technical Data and Results

Proven Results

Noise pollution is one the biggest problems faced in the cities today, particularly in a high-density living. Unwanted noise can be responsible for sleep loss and lack of concentration. This can lead to a deterioration of health through increased stress levels, headaches, high blood pressure and loss of hearing.

Noise penetrates windows through leaky seals or vibrations through the window structure. To reduce noise, a window should minimise air infiltration, hold enough weight to limit vibration and allow a large air cavity. This cavity, or air gap, is the key to secondary glazing.

Expert Advice:

CSIRO Research by John Davy shown an air cavity can effectively enhance sound insulation performance. The larger the air cavity the more noise the window system can reduce. Results show a wide air gap of 100-125mm will improve sound insulation by an average of 7dB(A) more than windows with a narrow gap of 8-13mm.

Window or Glass Door Type	Total Glass Thickness (mm)	Air Cavity Thickness (mm)	Sound Insulation (dB)
Single Glaze 3mm	3	0	23
Single Glaze 6mm	6	0	27
Double Glaze Narrow Gap	9-12	8-13	31
Double Glaze Wide Gap	9-12	100-125	38

Window or Glass Door Type

Total Glass Thickness (mm)

Air Cavity Thickness (mm)

Sound Insulation (dB)

Single Glaze 3mm

Single Glaze 6mm

Double Glaze Narrow Gap

9-12

8-13

Double Glaze Wide Gap

9-12

100-125

The human ear is less sensitive to low frequency sound. According to a study released by the CSIRO, the human ear needs a change of 3dB to detect a difference in noise levels and the human ear perceives a change of 10dB as a doubling or halving of the noise level.

If you double the thickness of glass in a window the noise level will decrease by 3dB the least amount possible to make a difference. If the glass is laminated there is no perceived difference in noise reduction.

National Acoustic Laboratory Testing:

Working with the principles of noise transfer, Magnetite® and Soundtite are designed for high performance, which is achieved by combining air tight seals with the ability to maximize an air cavity and the flexibility to vary glazing thickness to suit. Magnetite® is excellent at reducing general noise such as busy roads, commuter trains and noisy neighbours. Whereas, Soundtite works well to combat low frequencies noise such as garbage truck, freight trains or airplane during take-off and landing.

Test Code	Material Tested	Rw*	Improvement
ATF 707 (test window)	Aluminium sliding window, 3mm float glass with mohair seals	23	N/A
ATF 709	Test window, 100mm air gap and Magnetite System (4.5mm acrylic panel)	35	52%
ATF 1507	Test window, 100mm air gap and Magnetite System (10.0mm acrylic panel)	39	70%
ATF 817	Test window, 100mm air gap and Soundtite (6.38mm laminated glass)	41	78%

Test Code

Material Tested

Rw*

Improvement

ATF 707 (test window)

Aluminium sliding window, 3mm float glass with mohair seals

N/A

ATF 709

Test window, 100mm air gap and Magnetite System (4.5mm acrylic panel)

52%

ATF 1507

Test window, 100mm air gap and Magnetite System (10.0mm acrylic panel)

70%

ATF 817

Test window, 100mm air gap and Soundtite (6.38mm laminated glass)

78%

*The Weighted Sound Reduction Index (Rw) is a measure for sound insulation performance of a single building element such as windows. The higher the Rw rating, the better the sound insulation.

Blog

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