What are sliding glass doors made of?

A sliding glass door is a complete assembly. The visible glass is only part of it: profiles, tracks, moving hardware, seals and locking components all need to work together. When reviewing a design, ask for the specification of the complete door rather than judging it only by the width of the frame.

The glass

Ask your supplier to identify the proposed glazing construction and explain why it suits the opening and intended use. Appearance alone does not establish its specification. Request the relevant safety and performance information for your proposal; this article is not a glass-selection or installation schedule.

Profiles and frames

Aluminium and PVC-U are among the materials used for sliding-door profiles. The frame material and the way the system is designed are separate considerations. Compare the actual proposal, including visible frame widths, finishes, maintenance requirements and complete-door performance.

Tracks and moving parts

Ask to see how the doors open, where the panels park and how the threshold meets the floor. Include handles, locking arrangements and access for maintenance in that conversation. A drawing of the opening and a demonstration of the proposed system can answer different questions.

What does frameless mean for your design?

Use drawings and samples to establish exactly which edges and connections remain visible. Ask your designer to show the meeting points between panels and the junctions with the building, so that the word frameless becomes a clear visual brief.

Questions for your quotation

Which glazing construction and door system are proposed? What evidence supports the performance being quoted? What finish is included? How will the threshold and surrounding floor be detailed? Who is responsible for installation and aftercare? These questions help make quotations easier to compare.

Discuss your proposed opening with GlasSpace, or explore our sliding-door page and guide to door opening styles.

Explore our sliding doors, compare door opening styles, or discuss your project.