Introduction to AAC

It is the smart option.

What is AAC?

AAC stands for Autoclaved Aerated Concrete, an alternate building product that was developed in 1924 by a Swedish architect who was looking for an alternate building product with properties almost similar to that of wood – good thermal insulation, solid structure and easy to work with.

AAC blocks are the new favourite building product of the construction industry which is due to their superior properties; lightweight, energy-efficient, fire-resistant and an excellent thermal insulator.

The AAC blocks are suitable for internal as well as external construction, making them ideal for all kinds of structures such as schools, hospitals, hotels, offices, independent housing and apartments. The buildings constructed with AAC blocks are also known as environmentally friendly buildings and don’t require curing and the normal thick plastering.

AAC Product Range


Wall Panels


Slab Panels

  • Technical Comparison
    ParameterAAC BlockConcrete BlockClay Brick
    Size (mm)(624 * 249 * 115 - 365)(230 * 75 * 115)(230 * 75 * 115)
    Variation in dimensions+/-1mm+/-3mm+/-5mm
    Compression Strength30 - 50 kg/cm240 - 50 kg/cm225 - 30 kg/cm2
    Dry Density380 - 800 kg/m3, depending on architectural requirements1800 kg/m31950 Kg/m3
    Fire Resistance4 - 6 Hours (Depending on thickness)4 hours2 hour
    Sound Reduction Index (dB)60 for 200 mm thick wall30 for 200 mm thick wall40 for 230 mm thick wall
    Thermal Conductivity W/(K-m)0.1220.510.81
  • Economical Comparison
    ActivityConventional Blocks ( Concrete or Clay Brick)AAC Blocks
    Bricks per m250 bricks6.4 AAC building blocks
    Mortar per m268 litres of mortar3 litres AAC thin bed mortar, included in price
    Time per m25.6 man hours to build 1 m245 minutes to build 1 m2
    Plastering1,5 to 2,5 cm of plaster on either side6 mm AAC plaster on either side
    PropertiesNon-homogeneous wall structureHomogenous wall structure, same material with no shifting and no cracks
    Cost per m2R485 to completely build 1 m2R370 to completely build 1 m2
AAC Tool Kit
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