Open Corner Sliding Glass Doors

Toward light and wide architecture

The original version of this article appeared in ArchDaily.

Categories

Residential
Window wall
Multi-slide doors
Sliding glass door

Location

California

Large openings and panes of glass without connecting posts give homes a seamless connection between the indoors and the outside.

Malibu Crest, a 2019 remodel of a 1949 International Style home, was a vital undertaking by the architecture firm Studio Bracket that aimed to expand the structure’s square footage and panoramic views of Malibu, while retaining over 50 percent of the home’s original walls.

The project was ultimately successful, not only in its refurbishment of the interior rooms and reconfiguration of the space, but also in its enlargement of the windows to truly capture views of the surrounding lagoon and mountains. This expansion of the view was done in part through an open corner window scheme and floor-to-ceiling glass, manufactured by Western Window Systems.

Open corner sliding glass doors are an especially useful product for homes with outdoor amenities.

The uninterrupted glass walls, afforded by open corner technology, is one of the most effective ways architects can open an interior space to stunning vistas of a natural environment. Yet an even more striking configuration increasingly being employed by residential architects is that of the open corner sliding glass door – a system that can completely open an interior space to the unobstructed outdoors even more. Below, we discuss this technology in more detail, alongside several examples of projects using the open corner glass door.

The design and materials of open corner windows and doors vary depending on the manufacturer. Western Window Systems, the manufacturer in charge of the windows of Malibu Crest, uses tempered glass as a default for open corner products due to its greater strength than regular glass. At the open corner of a window, manufacturers will typically simply butt the two panes of glass together. In this case, however, the two sheets of insulated glass are joined in a 90-degree wedge shape, creating a seamless connection, with silicon inserted between the two to seal the unit. For their open corner multi-slide doors, the frames and design are equally dramatic: with a unique extrusion attached to the end of one panel, the adjacent panel sliding in at a 90-degree angle simply nestles in smoothly.

Architect Jessica Hutchison-Rough used large glass panes with butt-glazed corners to achieve unobstructed views in this Arizona home.

A 90-degree configuration of multi-slide doors creates an indoor-outdoor dining area.

Of course, to design for large expanses of open corner sliding glass doors, architects must give greater thought to structural considerations at an early stage. The primary consideration for the size of open corner sliding glass doors is therefore the width at which engineers can design an opening with a header that does not deflect. From the manufacturer’s standpoint, with the architect’s structural work executed adequately, Western Window Systems, for example, can design multi-slide glass doors up to 60-70 feet wide. For its Classic series, these doors are typically a maximum of 12 feet tall. However, using its Performance series, glass sliding doors up to 17 feet tall can be incorporated. Some architects use additional corner supports removed from the sliding glass door track to ensure that structural requirements are met for the use of these open corner doors. For example, a home designed by A Parallel Architecture uses the open corner glass sliding doors to merge the interior living room area with additional outdoor patio space, including a dining area and infinity pool. While the design includes a structural support, it remains detached from the glass door track, retaining the sense of a dissolved wall and open space.

A Parallel Architecture designed this home in Austin, Texas to have 270-degree panoramic views with the help of open corner window configurations.

Likewise, The Cresta house (view Western Window Systems’ gallery here.) designed by Jonathan Segal, FAIA uses an interior column at the corner to support an almost completely open ground floor with open corners and enormous sliding glass doors. Through these doors and a concrete floor that remains consistent throughout both “interior” and “exterior,” the traditional boundary between the two seems almost completely obliterated. Open corners have the ability to open up a space immensely, invisibly merging indoor rooms with outdoor areas and bringing in both light and scenery. Without opaque walls delineating corners and boundaries, users can feel much more connected with nature, and a home, while retaining the same square footage, can feel unlimited, extending as far as the horizon line. Architects looking for ways to widen a space and facilitate outdoor living must consider the open corner sliding glass door – an extraordinary way of opening a home to nature.