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Windows | Frame, Glass & Hardware

Written by

Paarhammer

30 July 2025

 • 

2 min read

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Windows are an important part of any building and have to comply with several Australian Standards (AS). This is the reason why windows are made as a whole system where frame, glass, and hardware, are designed as a unit to achieve the required results. If any part of such a system gets changed, it will not comply with the AS’s anymore and become a ‘deemed to satisfy’ or ‘engineered solution’.

When hardware details, profile details, or any components are changed, or the overall size is made larger compared to tested sizes, the window system may no longer be compliant and needs to be assessed regarding structural performance. Such alterations make it difficult for the window manufacturer to issue a certificate of compliance for wind load, water egress, etc.

It is always the whole system that gets tested, be it for water egress, wind load, energy efficiency, or bushfire. Testing to the different AS has to be done by third-party NATA-accredited testing facilities, and the window manufacturer has to provide test reports to clients by request.

Historically architects, designers and engineers were, and still are, getting involved in facades, windows and doors. While that might satisfy the design of DTS (deemed to satisfy) or as an engineered solution, it still leaves a gray area of who is ultimately responsible for the performance of the product.

All window components combine to provide you with peace of mind. Paarhammer windows and doors have test reports for different product ranges and configurations, for example:

Wood-Alu Range, fixed and tilt & turn window


Deflection Test – Pass

Mullion @+2030 Pa = Span /252

@-1900 Pa = Span /252

Sash Stile@+2030 Pa = Span / 3679

@-1900 Pa = Span / 4432


Water Penetration Test: 600PA- Pass

No water penetration was observed during the test.


Ultimate Strength Test:+5900 & -5900 Pa- Pass

No sign of collapse was observed during either test pressure.



Residential and Commercial Buildings Ratings:

Serviceability Limit State Pressure Rating:+2000Pa and -1900Pa

Ultimate Limit State Pressure Rating:+5900Pa and -5900Pa


Air Infiltration Level: Low

Water Penetration Resistance Pressure: 600Pa


For more information and/or test results please contact us