Building Elements

Double-Hung Windows

George Giannakakis

By George Giannakakis · B.Arch.Studies · M.Arch (UniSA) · RLA300580

Last reviewed: · How we research

Double-Hung Windows explained in detail

These windows have two sashes (the part of the window that holds the glass) that move up and down. Often used in residential buildings, they are opened from the top or bottom to provide ventilation. They typically have a balance system that holds the sash in place, allowing it to be easily opened and closed. Some double-hung windows also have the ability to tilt in for cleaning. They're particularly popular in heritage and character homes across Australia.

No Gas From 2027. Which States Are Impacted?
23m 51s
Watch: Double-Hung Windows in contextSponsored byHome Building Hub
No Gas From 2027. Which States Are Impacted?

From 2027, new homes in Victoria will be all-electric, but what does that mean for the rest of Australia? In this episode, we break down which states are impacted, what changes to expect in new builds, transitional rules already in play, and how existing homes may be affected.

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Related Terms

Frequently Asked Questions

Common questions about double-hung windows

These windows have two sashes (the part of the window that holds the glass) that move up and down. Understanding the terminology upfront helps you compare builder quotes and read your Australian building contract with confidence.

Authoritative Sources

Verify against the binding rules in your state

BuildPilot is an independent Australian building platform, we publish guidance, we don't hold a building licence. Every Australian residential build must comply with the National Construction Code plus state-specific Acts and consumer-protection law. The authorities below are the primary sources of truth for the rules that actually apply to your project.

National

Australian Building Codes Board (ABCB)

The primary national set of technical building standards that every Australian build must comply with. Volume 2 covers Class 1 & 10 buildings (most homes).

Standards Australia

Specific material, product and method standards (e.g. AS 3700 masonry, AS 1684 timber framing) referenced by the NCC.

HIA

National peak body for residential builders. Publishes the most widely used home-building contracts and consumer guidance.

Master Builders Australia

National peak body for general builders. Publishes commercial and residential contracts and industry guidance.

Links above open the public website of each authority. BuildPilot is not affiliated with these bodies and does not act on their behalf. Information on this page is general - check the current edition of the NCC and the relevant state Act for binding requirements.

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