Blog

Jul 18, 2021

How to Reduce Your Electricity Bill This Winter

As we head into the cold weather of June, we notice the importance of the little things. After all, the fun part of winter is all about appreciating these small ...

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Jul 13, 2021

How to Keep Your Home Warm During Sydney Winters

Let’s face it. The past 18 months have created a pervasive stigma about getting sick. All of a sudden, Sydneysiders have felt an internalised feeling of urgency to follow rules ...

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Jun 21, 2021

Magnetite Adelaide announced new franchise owner

Adelaide June 2021: Max Gambi has recently taken over the operations in Adelaide. To continue the family run business foundation that Magnetite Adelaide was built on, Max has brought in his ...

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Apr 26, 2021

Are You Living or Considering a Home on a Main Road? We’ve Got Your Back.

Whether you are a first-time buyer or an investor, location is a key consideration when buying property. You have likely heard the phrase “Location! Location! Location! “ You may have ...

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retrofit double glazing for noise reduction

Apr 26, 2021

Is Buying on Busy Road a Deal Breaker For You? It Shouldn’t Be.

There are many benefits to living close to the buzz of inner cities. There are plenty of amenities in close proximity and a shorter commute for those who work in ...

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Mar 24, 2021

Benefits of Secondary Glazing to Soundproof Your Home

We’ve all been irritated by outside noise before – it’s disturbing and there’s not much you can do but endure. Picture it: you’ve had a hard week at work and want ...

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Mar 22, 2021

Magnetite to continue to support Rio Paralympian Katie Kelly on her Road to Tokyo 2021

Sydney, March 2021: Magnetite Australia is proud to continue its support of Rio Paralympian and Gold Medallist Katie Kelly OAM as she prepares to qualify for the Tokyo 2021 Paralympics in ...

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Feb 16, 2021

Can Magnetite Beat the Summer Heat?

Whether you’re in Melbourne, Sydney, Perth, Canberra or Adelaide, there’s little respite from the heat of the harsh Australian sun. The painfully apparent problem is that so many houses lack ...

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Jan 28, 2021

Window Treatment Ideas to Keep Your Home Comfortable in Summer

Inevitably, long hot summer days can significantly affect the overall comfort of your house, and whether your home is new or old, you are at the mercy of the elements ...

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Season's Greetings & Magnetite Office Holiday Closure

Dec 1, 2020

Season's Greetings and Magnetite Office Holiday Closure

We would like to advise you of our holiday period. The head office will be closed from Thursday 24th December 2020 and reopen on Monday 11th January 2021. Over this period please feel ...

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Oct 22, 2020

A New Generation in Insulation

Sydney, October 2020: After 20 years helping Adelaide families insulate their homes against noise and the harsh Australian weather, Janusz Bejnarowicz has decided to tackle his next challenge; retirement. This decision ...

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Jul 8, 2020

How to reduce condensation in your home with Magnetite

Ever wondered why on cold mornings you see water droplets on your window? In winter, our heating systems usually mean it’s more humid indoors. Warm air holds more moisture than ...

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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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