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Types of Windows : A guide to understand each and every style

From single pane, to bi-folds and louvres, here's what you need to know.
A modern country living room with white and blue furnishings overlooking the pool.Photography: Louise Roche / Styling: Kylie Jackes

Seemingly simple, windows are the eyes of your home. Where light and airflow are lacking, the right windows can transform a room into a light-filled, airy zone and add ambience to any space. Allowing air flow through open windows adds to the comfort of indoor spaces and, when closed, insulates against weather, controls light to help balance natural circadian rhythms and reduces noise in busy residential zones. Windows also provide privacy and security for your home.

Choosing the type of window for your home requires careful thought. Bi-folds are perfect for creating an open serving zone between indoors and outdoors, while a louvre window is great for the bedroom or bathroom. The following factors to be taken into account:

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  • Frame material
  • Glass type
  • Placement
  • Security
  • Energy efficiency
  • Noise reduction
  • Size and shape
Contemporary neutral bedroom with ceiling fan and roller blind. Louvre windows are often considered the best type of windows for bedrooms.
The bare essentials in this modern coastal bedroom on the NSW South Coast include louvre windows to maximise airflow.

10 window types you need to know about

1. Single-hung windows

Features: One is a fixed pane, and another is a pane that slides up and down.
Best for: Classic style, heritage homes, budget renovations

A bank of sing-hung sahs windows above a kitchen sink and marble benchtop

A skylight and sash windows bathe the space in light. Shaker-style cabinets in Dulux Heifer and brass Perrin & Rowe ‘Ionian’ tapware from The English Tapware Company complete a refined look.

2. Double-hung windows

Features: Comprises two moving panes. When the lower pane is raised, the upper pane opens an equal distance.
Best for: Heritage homes, traditional renovations, versatility

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3. Bi-fold windows

Features: Multiple panes fold along a track to one side. The opening is almost the size of the entire window or door, maximising access to the outdoors. With multiple sashes, the slimmer the frame profile (or with frameless panels) the clearer the view.
Best for: Servery settings, indoor-outdoor zones, maximising window openings for full air flow

Servery window with bi-fold windows above an indoor-outdoor benchtop

SERVERY BAR A bi-fold window and bench out from the kitchen enhances the natural light and makes a servery bar for effortless outdoor entertaining. The floor tiles are from Industrie Tapware.

4. Servery windows

Features: The lower of two panes lifts to create an opening of nearly half the overall window height.
Best for: Kitchens that connect to an outdoor area.

5. Louvre windows

Features: Horizontal slats that tilt to allow complete control over the level of ventilation.
Best for: Tropical climates, privacy and light control – frosted and etched louvre windows are perfect for bathrooms.

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Modern living room with gray sofa, large windows including louvre windows, indoor plants, and a sleek fireplace. Bright and airy atmosphere.
A panel of louvre windows is placed to the right side of three fixed windows to allow for airflow away from the fireplace. (Photography: Chris Warnes)

6. Awning windows

Features: Tilts on top hinge to open from the bottom and can be left partly open during wet weather to let in fresh air while keeping out rain.
Best for: Tropical settings, high placements, ventilation in wet weather

7. Casement windows

Features: Classic timber glazing bars and pivots 90 degrees (like a door) to capture breezes.
Best for: Traditional homes, stained glass, maximum ventilation

8. Sliding windows

Features: Slide along a track. Easy operation. The more panels, the wider the opening – but the more obstructed the view. They don’t open completely.
Best for: Contemporary homes, space-saving windows for apartments and small spaces without clearance to open.

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Modern kitchen with patterned tiles, white island, wooden stools, pendant lights, and a view of greenery outside.

Black-framed windows, with sliding doors open this home to the outdoors and into the verdant backyard. (Photography: Louise Roche / Styling: Kylie Jackes)

9. Clerestory windows

Features: High row of windows, often above doors or fixed bank of windows
Best for: Contemporary homes, passive and solar designs, allowing maximum light

10. French doors

Features: French Doors typically feature four panels that open out from the centre, and traditional colonial or federation-style woodwork. Open just one side in winter or both in summer for access to the garden.
Best for: Perfect for heritage homes – and also useful in internal spaces to close off rooms without impacting the light flow. 

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