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Interior and finishes

Glass & Glazing Materials

Glass is rarely specified as a single sheet. Most glazing in a building is an assembly: two or more panes, a spacer, a cavity, coatings, edge seals and a frame — and the frame and the installation matter as much as the glass itself.

These entries describe glass types and glazing products qualitatively. They contain no safety-glazing determinations, no thermal or acoustic performance figures, and no statement that a given glass is required or adequate in a given location — those are design and regulatory questions for qualified professionals.

8 reference entries · educational materials reference · suitability always depends on the complete assembly and qualified professional review

Scope

What this category covers

Where the boundary of this part of the library sits, including what it deliberately leaves to qualified professionals.

  • Basic and processed glass types used in buildings
  • Sealed glazing units and the coatings applied to them
  • Glass block and rigid transparent sheet alternatives
  • Not covered: safety-glazing determinations, performance values or where a glass type is required

Start here

Frequently referenced entries

A starting point, not a ranking — these are simply the entries most people arrive looking for.

Insulated glass unit →A factory-sealed assembly of panes, spacer and cavity in which the perimeter seal is the part that ages, and misting between panes signals unit replacement rather than repair.Toughened glass →Float glass toughened so its surfaces are held in compression, giving a granular break pattern and making cutting or drilling after processing impossible.Laminated glass →Two or more glass plies bonded to a continuous plastic interlayer, so a broken pane cracks but its fragments generally stay held on the interlayer within the opening.

All entries

Every glass & glazing entry

The complete set for this category, in reference order.

Float glass →The annealed flat glass produced on a molten tin bath, and the base stock that most toughened, laminated, coated and sealed glazing products are processed from.Toughened glass →Float glass toughened so its surfaces are held in compression, giving a granular break pattern and making cutting or drilling after processing impossible.Laminated glass →Two or more glass plies bonded to a continuous plastic interlayer, so a broken pane cracks but its fragments generally stay held on the interlayer within the opening.Insulated glass unit →A factory-sealed assembly of panes, spacer and cavity in which the perimeter seal is the part that ages, and misting between panes signals unit replacement rather than repair.Low-emissivity glass →Flat glass carrying a microscopically thin coating that alters how the assembly handles radiant heat, made in soft-coat and hard-coat forms that handle and look different.Obscured glass →Rolled, etched or blasted glass that diffuses light and disrupts a view through it, with obscuration varying by degree from a light texture to heavy relief.Glass block →A hollow pressed glass unit laid in courses within a bedded, reinforced panel - a construction element built much like masonry rather than a glazed window.Polycarbonate sheet →A thermoplastic glazing sheet, solid or multiwall, that is far lighter and more impact-tolerant than glass but scratches easily and moves considerably with temperature.

Browse by role

By the role the material plays

The same entries, clustered by what they typically do in an assembly. A material can appear in more than one cluster because it genuinely plays more than one role.

Thermal layer

Materials whose role in the build-up is thermal.

Weather barrier

Layers that shed or resist rain, wind and weather.

Internal surface

The visible inner face people see, touch and walk on.

Where they appear

Parts of a building this category touches

An orientation aid only — it does not imply that any entry is suitable for that part of a particular building.

  • External walls · 8
  • Roofs · 5
  • Internal walls and ceilings · 6
  • Floors · 1
  • Wet areas · 3
  • External works and landscape · 1

Elsewhere on Build Design Hub

Planning guidance for this subject

This library explains what materials are. These sections help with choosing between them and preparing for the conversation.

Exterior materials guides →Planning guidance for windows, doors and facades.Building envelope checklists →Preparation before a windows and openings conversation.Material comparisons →Neutral A-vs-B comparisons, including glazing options.

Materials & Systems Encyclopedia

Reference entries for building materials, product formats and system components — what they are, what their behaviour depends on and what to ask about them.

Browse the full Materials Library →