Altherm awing and casement windows have been the popular choice of both designers and home owners for over two decades. Their strength, performance and superior good looks have always appealed to the discerning.

In-Built Strength

All Altherm sashes are made from strong box section profiles.
That means that they don't twist and flex when you open or close them.

Clean Appearance

Altherm's use of pressure-fit glazing means that there are usually no black glazing wedges visible from the exterior when windows are single glazed.

Adjustable Ventilation

The Altherm SashVent is a conveniently operated trickle ventilator that can be incorporated in the bottom of awning or casement sashes. It allows adjustable ventilation with windows securely closed - great for airing stuffy rooms and those vulnerable to condensation and dampness.

Uncluttered Profiles

There is no clutter of grooves or 'die lines' on the window profiles, especially on transoms or mullions. This departure from traditional practice results in a clean, timeless look that won't date your joinery.

Condensation Removed

Condensation is collected and drained to the outside through Altherm's unobtrusive condensation channel at sill level.

Decorative Patterns

Colonial or federation glazing bars can be added to awning and casement windows (and fixed lights) to give an extra touch of elegance.

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Altherm sliders come into their own when you need a window that doesn't project on to walkways and patios. They're ideal for passing food from kitchen to outside diners.

Strong Panels

Single or double opening panels are available, and the panel stiles are robust box section profiles for strength and durability.

Double Sliders

A special double slider window is possible where two panels on parallel tracks stack behind each other and allow the user the choice of which to open.

Weatherproof

For secure weather protection there are double layers of weatherpile on all sides of the sliding panels.

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For dramatic wide opening, Altherm bi-fold windows are the way to go.

Expansive Views

They open up the full expanse of outside views and range from two to six panels wide. With the six-panel option unobstructured opening of four metres is possible.

Weather Tight

There's no worry about weatherproofing - Altherm bi-folds have panel-to-panel bulb seals on the sides to keep out the elements.

Double Glazing

The Altherm bi-fold system is designed to comfortably carry heavy panels, so double glazing is no problem.

Coloured Hardware

Hinges, D-pulls and locks can be coloured to match the windows.

Strength

Altherm Bi-fold windows don't skimp on strength – they have a strong, box section design.

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Altherm greenhouse windows perk up a room with a light and airy feel. They add space and warmth to the living area.

Kitchens Plus

They're ideal in kitchens above benches but can also find a place in other living areas, especially when built as corner windows.

Sashes

Opening windows can be awnings or casements either side of the unit.

Strong Construction

Altherm greenhouse windows use corner gussets to make sure that the frame is rigid and secure.

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These project out from the wall and are ideal for giving a room a more spacious feel.

Options

There are several design options - the standard format with an elevated base, a corner window to maximise light entry, or a full boxwindheight unit from floor to eave.

Window Seats

Corner box windows can create a delightful environment for window seats.

Secure Ventilation

Secure background ventilation is possible through the use of Altherm SashVents at the bottom of opening sashes.

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Bays are a timeless window design that can enhance both the look and living area of a home.

Options

Bay windows can have full height glazing for maximum light and warmth or be top glazed with a cladding base.

Colonial Bars

Colonial glazing bars are available to give a touch of 'old world' tradition to Altherm bay windows.

Opening

Bays can include most sash types, with sliding or hinged doors possible in the front panel of full height units.

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Altherm can help make your design dreams a reality with their wide experience in dealing with the ambitious, the customimaginative and the unusual.

Our fabricators can draw on years of experience in meeting the wide range of requests for custom designed windows of all shapes and sizes.

Altherm offers curved, raked, arched and faceted windows as well as curved glass, glass blocks and louvre windows.

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