Autoclaved Aerated Concrete / ALC

Autoclaved Aerated Concrete / ALC

A lightweight aerated concrete panel filled with tiny pores. It looks softer and more porous than dense concrete, with panel joints, cut edges, and a pale mineral surface.

Common names

  • AAC
  • aerated concrete
  • hebel panel
  • lightweight concrete panel

Search phrases

  • lightweight concrete panel
  • industrial exterior panel
  • aerated concrete wall
  • gray panel wall

Common uses

  • Exterior wall panels
  • Partitions
  • Fire-rated walls
  • Warehouses
  • Industrial buildings

Choosing points

  • Best for apartments, factories, and large walls where lightweight concrete panels are useful.
  • Panel joints and sealant lines are visually important.
  • The surface is porous and often coated or painted.
  • Damage at corners can reveal a lightweight cellular core.

How it ages

  • Needs coating and joint maintenance; water entering cracks or joints can cause staining and deterioration.

What to avoid

  • Do not leave ALC panels exposed to water at edges or penetrations; coating, flashing, and joint sealing are essential.