Double Glazing for Commercial Windows

Creating Building Efficiency

Windows create harmony between inside and outside spaces; from the beauty, they add to a building facade to the natural light they bring in. However, inefficient commercial windows can be the greatest source of heat gain or loss and noise pollution in a building. This can add to the running costs of the building and decrease the efficiency of staff performance.

Magnetite has developed a reputation as a leader in both acoustic and thermal window insulation. We offer cost effective, proven and tested products for reducing energy use and noise in existing building. With extensive knowledge and experience in glazing requirements, we customise solutions to assist you in achieving the best results on your project. With over 25 years of experience, Magnetite has been involved with noise and thermal insulation in commercial projects for infrastructures, hotels, schools, office buildings, restaurants, hospitals, heritage listed properties, and government buildings across Australia, New Zealand and Singapore.

We operate through a network of licensed and qualified fabricators, estimators and installers. Magnetite’s fabricators are located in Adelaide, Canberra, Melbourne, Perth and Sydney and we service Wollongong and Orange through a network of authorised dealers.

Why Choose Magnetite for Your Retrofit Double-Glazing Projects

Maximise soundproofing and thermal insulation

Our double glazing services focus on upgrading the performance of your existing windows and doors. The solution can be tailored to maximise soundproofing and thermal insulation as well as energy efficiency. Magnetite’s secondary glazing systems reduce noise through windows by up to 70% for more comfortable buildings and workplaces and reduce heat transfer through windows by up to 60% creating more sustainable living.

Maintain aesthetic of building exterior

For heritage buildings, retrofitting with Magnetite secondary glazing retains the existing windows and aesthetic character of the building façade. Our systems are designed to fit any type and style of existing windows or doors.

Reduce costs without adding to landfill

Magnetite offers a cost effective alternative than a full replacement. This also means the existing windows are not taking up room in overflowing landfills.

Sustainable environment

Magnetite’s secondary glazing solutions create more stable indoor temperature. It improves energy efficiency, reduces power bills and means longer life for HVAC equipment.

Our commitment to excellence includes Green Star, to enhance communication and help deliver the best solution for your retrofit project. Our teams of trained and licensed installers ensure high quality, efficient installations. We keep abreast of the latest developments and are active participants in the green building industry including Ecospecifier, Green Building Council of Australia (GBCA), Window Energy Ratings System (WERS), Australian Windows Association (AWA) and Facility Management Association (FMA). Contact Magnetite today for your partner in retrofit glazing projects.

Submit your enquiry and we will get back to you within 1 business day.

What Our Customers Say

“ I’m very glad we went ahead with installation of the Magnetite secondary glazing to the bedroom windows exposed to the highway. We have only had a few noise complaints, and given the nature and extent of the works that is very pleasing. ”

Assured Hospitality, South Perth WA

“We would like to thank you and the employees of Magnetite for their recent installation at our premises. At all times we found Magnetite to be courteous and efficient and the job was carried out with the minimum of disruption to our staff.”

Magna Systems & Engineering, Chatswood NSW

“Magnetite was approached to offer an acoustic glazing solution to a Heritage Building with noise issues. From day one, the advice and service has been excellent, after hours works were performed cleanly, safely and efficiently and all installation.”

Shape, Perth WA

“David and his team fitted the sliding door panels. They did a great job. Exactly what I was hoping for. I’d be happy to recommend any work your way”

Max Schweizer Swiss Watch Service, Sydney NSW

“We wish to express our thanks for recently completing an inside window insulation for a flat that we manageon a major roadway in Sydney. The tenant had been there 12 months and never slept in the front room due to road noise.”

First National Real Estate, Cammeray NSW

“Dear Barry, further to our discussion and your request for feedback regarding the product and services your company provided via our head contractor Buildcorp for the recent dust and noise mitigation project in Maison Dieu.”

RTCA Hunter Valley Project Group, Singleton NSW

PRODUCTS

PROJECTS

GALLERY

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.

Double Glazing for Commercial Windows

Creating Building Efficiency

Why Choose Magnetite for Your Retrofit Double-Glazing Projects

Maximise soundproofing and thermal insulation

Maintain aesthetic of building exterior

Reduce costs without adding to landfill

Sustainable environment

Submit your enquiry and we will get back to you within 1 business day.

What Our Customers Say

PRODUCTS

PROJECTS

GALLERY

The Window Energy Rating Scheme (WERS) Thermal Performance

Aluminium Frame Windows

Timber Frame Windows

Magnetite vs Traditional Double Glazing – What the experts says