

This Month Promotion ❤️ with extra discounts up to 5%. Discounts for new customers, the more you buy, the more you save, up to 55,000 baht! Until November 30.
This Month Promotion ❤️ with extra discounts up to 5%. Discounts for new customers, the more you buy, the more you save, up to 55,000 baht! Until November 30.

G2 AAC lightweight blocks, class 2 to TIS 1505, about 400-500 kg/m³. Lighter and better at keeping heat out than G4, for non-load-bearing walls in column-and-beam houses and townhomes. 7-25 cm from Q-CON Extra Cool, Diamond and DURA One.




















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G2 AAC blocks are class 2 blocks under TIS 1505-2541, with a dry density of about 400-500 kg/m³. That is lower than G4, so the blocks are lighter, hold more air and insulate better against heat. Compressive strength is 20 kg/cm² or more, which is enough for non-load-bearing walls in a column-and-beam frame.
The low weight reduces structural load and speeds up handling and laying, and exterior walls keep the house cooler. For condos, high-rise or walls that must carry heavy fixings, choose G4 AAC blocks instead. The table compares the two grades.
G2 (class 2) | G4 (class 4) | |
|---|---|---|
Dry density | About 400-500 kg/m³ | About 500-700 kg/m³ |
Compressive strength | 20 kg/cm² or more | 40 kg/cm² or more |
Strength | Lighter, better heat insulation | Stronger, better for heavy fixings |
Best for | Non-load-bearing walls, houses, townhomes | Condos, high-rise, engineered walls |
Brands | Q-CON Extra Cool, Diamond, DURA One | Q-CON, THAICON, TPI, Aerocrete, Smart Block |
At OneStockHome you can compare every G2 thickness and brand on one page and order by the block or by the full 6-wheel or trailer truck at a lower per-block price, with delivery charged by weight. Add AAC masonry mortar and AAC plaster to the same order. Further reading: G2 vs G4 AAC blocks