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When you talk about the energy efficiency of windows, it is not just the glass but the whole window system, which includes the frame, glass, seals and spacers. All components make a difference to the energy used in your home. Tested window products receive a rating called the U-value. A lower number indicates more energy efficiency. The U-value can be as high as 7.5 in some windows and doors and as low as 0.8 for extremely energy efficient products (0.8 is Paarhammer’s latest and best rating).

The testing of energy efficiency must be performed by a rating organisation which is accredited by the AFRC – Australian Fenestration Rating Council. This ensures the testing is consistent for all products, follows the Building Code of Australia and protects consumers. These ratings are published by WERS (Window Energy Rating Scheme).

WERS is underwritten by the Australian Government’s Greenhouse Office as part of its commitment to improve energy efficiency and reduce greenhouse gas emissions in the build environment. WERS is independent of any individual manufacturer and is managed by the AWA (Australian Window Association).

Different countries test energy efficiency levels differently, and the U-value number results cannot easily be transferred to Australian ratings. In Europe, the U-values of windows are calculated using different temperature conditions, and in the United States of America the final data is based on imperial units.

Comfort, amenity and resale value are improved by using high-performance windows. Not unlike buying a fridge, washing machine or other appliance for their star rating, the window industry has progressed to offering true consumer goods viewed as performance appliances for energy, noise and security.

As a consumer you should insist on receiving an energy rating certificate which states the energy efficiency ratings of your windows and doors.

More info on www.wers.net

 

Energy Rating Certificate

Friday, August 09, 2013 Paarhammer

When you talk about the energy efficiency of windows, it is not just the glass but the whole window system, which includes the frame, glass, seals and spacers. All components make a difference to the energy used in your home. Tested window products receive a rating called the U-value. A lower number indicates more energy efficiency. The U-value can be as high as 7.5 in some windows and doors and as low as 0.8 for extremely energy efficie ..

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Renovations on the Rise

Monday, June 24, 2013 Paarhammer

Australia's love affair with renovating is expected to continue with property equity levels beginning to improve. In Victoria, current levels of housing starts remain higher than anywhere else and renovation investments are at record levels. The latest figures from the Australian Bureau of Statistics (ABS) reveal that in 2012 building approvals for home renovations totalled $6.35 billion or around $500 million every month. This trend  ..

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This post is in answer to a question under 'Ask Tony' as the topic of bushfire, especially Flame Zone might interest a number of readers.

Rob asks: We live in NSW in a FZ area and would like to use your windows as these are the only ones approved to the AS for Flame Zone. We are told we cannot use them as they are timber. Any solutions?

Tony's anwers: Unfortunately NSW is a bit different to the rest of Australia. While we have done a number of Flame Zone jobs outside Sydney, it depends on the wording of your Planning Permit and on your Building Inspector whether you are allowed to use our timber BAL-FZ windows and doors or not.

The RFS in NSW has a Fast Fact Paper as an advice document for local councils and fire engineers which states no timber to be used for window frames disregarding whether they comply with the relevant Australian Standard or not. Unfortunately Councils rarely rule against this advice, but please keep in mind that the NSW RFS is in their own words ‘only an advisory body and not a certifying body’.

The sad thing is that this Fast Fact advise allows aluminium windows with aluminium shutters to be used. A small fact from our Flame Zone test: The aluminium handle of our sliding door melted within 10 minutes into the Flame Zone test AS1530.8.2.

Observation on the timber showed that the timber was charred during the gruelling 30 minutes test at plus 850 degrees in the test furnace. After our timber windows and doors were removed from the furnace there was no visible flaming. The test also includes another 60 minutes as a cooling down period.

Our innovative window and door solution for Flame Zone passed the relevant Australian Standard test without any problems whatsoever and are therefore approved for use in the highest bushfire area BAL-FZ according to the Australian Standard (NSW can be tricky).

 

Flame Zone in NSW

Monday, June 17, 2013 Paarhammer

This post is in answer to a question under 'Ask Tony' as the topic of bushfire, especially Flame Zone might interest a number of readers. Rob asks: We live in NSW in a FZ area and would like to use your windows as these are the only ones approved to the AS for Flame Zone. We are told we cannot use them as they are timber. Any solutions? Tony's anwers: Unfortunately NSW is a bit different to the rest of Australia. While we have do ..

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Life Cycle Analysis - LCA

Thursday, March 07, 2013 Paarhammer

Life cycle analysis (LCA) is a method of measuring the environmental impacts of building products over their whole life. The aim of a life cycle analysis is to identify, quantify and assess the impact of the energy and materials used and wastes released to the environment throughout the life of a building product. There are many life cycle analysis methodologies and all vary in their range and complexity but it all comes back to sustainabilit ..

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Sustainability - Carbon Store

Friday, March 01, 2013 Paarhammer

Growing trees absorb carbon dioxide from the atmosphere, emit oxygen and store carbon. About half the dry weight of a tree or wood product is carbon; one ton of carbon represents 3.67 tonnes of carbon dioxide. Australia's native forests, timber plantations and wood products are all net absorbers of greenhouse gases. In 2005, they sequestered (or stored) 56.5 million tonnes of carbon dioxide, reducing Australia's overall greenhouse ga ..

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Are your windows child safe?

Tuesday, February 19, 2013 Paarhammer

The Children’s Hospital at Westmead in NSW reported that from 1998 to 2011 there have been 113 young children admitted after falling from windows. To reduce such incidents the National Construction Code now requires window barriers to openable windows where the sill is less than 1.7m above floor level and the floor below the window is more than 2m above the surface beneath, effective from May 2013. These new rules apply for all w ..

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2012 in Review

Thursday, December 20, 2012 Paarhammer

The year 2012 at Paarhammer: We had another year of rapid growth and now employ 22 staff in our recently extended factory of 3500m2. A metal manufacturing part was added to better accommodate Sonnenschutz Shade&Shield Shutters, an affiliated company which also experiences fast growth. Two of the latest technologically advanced machines from Germany were added to the assortment. This year we had the privilege of working on som ..

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Sustainability and Style equals Award Winning Renovation

Tuesday, November 13, 2012 Paarhammer

RAIA has recently awarded the Southwood House a ‘Commendation for Sustainable Architecture’. The owners Mr Southwood and family wanted something simple and modest, where everything has a function. They wanted a small sustainable footprint with solar panels, wind power, water tanks, recycled materials and triple glazed windows and doors. The two bedrooms facing the street have oversized fixed windows to allow the northern sun to heat  ..

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Paarhammer Windows and Doors

Since 1990, Paarhammer windows and doors have been setting the benchmark in energy efficiency in Australia. Outstanding quality, security and design flexibility ensures architects, developers and home-owners achieve superior results and energy ratings.

Contact Us
  • Paarhammer Pty Ltd
  • 53 Haddon Drive ,
  • Ballan, Victoria, Australia 3342
  • Phone: 03 - 5368 1999