Garage Doors and revised Australian Standard

August 29, 2013

Following on going failures of roller doors in storms and cyclones Australian Standards chose to upgrade the 1998 version of the roller door standard.

The 1998 version of the standard used design pressures that were lower than the two wind loading codes AS/NZS1170.2 and AS4055.

A draft of the revised AS/NZS4504:2012 was released in August 2012, with the standard published in February 2013. The new version utilized wind pressures based on current wind codes.

From 1st May 2013, AS/NZS4505:2012 has been a referenced document in the Building Code of Australia, Volumes 1 & 2.

This means Roller Doors (and large access doors i.e. sliding doors) in the external walls of buildings in cyclonic regions C & D will be required to demonstrate that the door complies with the Building Code of Australia.

To achieve compliance, doors are required to be tested in accordance with the standard and be marked with a sticker that shows the wind rating of the door.

The use of a cyclonic wind rated door does not allow the reduction of the internal pressure of a shed unless the entire building envelope is able to resist flying debris in accordance with AS/NZS1170.2-2012 – Clause 2.5.7

AS/NZS4505:2012 is applicable to all wind regions; however it is only being referenced at this stage in the BCA for cyclonic regions.

Roller Door Manufacturers B & D, Steeline Doors & Taurean Doors all have published information for use of their doors in cyclonic regions. Glideroll Doors have advised they expect to publish data in late August, early September.