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Aerated block vs brick: which is better

The main question of house building: warm lightweight aerated concrete versus strong durable brick.

Aerated block Aerated block140 $/m³ Brick Brick280 $/m³

Key differences

  • Aerated block is roughly 50% cheaper (140 $/m³ vs 280 $/m³).
  • Aerated block is warmer: lower thermal conductivity (0.12 vs 0.56 W/(m·K)).
  • Brick handles moisture better: 10% water absorption vs 20%.
  • Brick is stronger in compression (15 MPa vs 2.5 MPa).

Specifications side by side

Property Aerated block Brick
Average price (United States) 140 $/m³ 280 $/m³
Thermal conductivity0.12 W/(m·K)0.56 W/(m·K)
Density500 kg/m³1800 kg/m³
Water absorption20 %10 %
Vapour permeability0.2 mg/(m·h·Pa)0.14 mg/(m·h·Pa)
Compressive strength2.5 MPa15 MPa
Frost resistance50 cycles50 cycles
CombustibilityNon-combustibleNon-combustible

Typical reference values (SP 50.13330 / GOST); the actual figures depend on the manufacturer and grade.

Where each one fits

Aerated block
Exterior and interior walls of private houses and low-rise buildings.
Brick
Load-bearing walls of houses, garages, fences and outbuildings.
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