What are 15 cm AAC blocks used for?
15 cm AAC blocks (20x60x15 cm) make a thick wall for jobs that need extra sound and heat insulation. Each block weighs about 13.6-14 kg and a wall takes 8.33 blocks per m². A 15 cm Q-CON wall rates about STC 43 and works as an exterior wall without a double skin.
Applications and grades
- Sun-facing exterior walls and houses that should stay cool longer.
- Rooms that need strong sound insulation, such as home theaters, music rooms and meeting rooms.
- Shophouse, factory and unit-separating walls.
- G2 AAC blocks (Q-CON Extra Cool) or G4 AAC blocks (Q-CON, THAICON, Aerocrete) as the drawings specify.
Benefits of 15 cm AAC blocks
A thick wall cuts heat gain and outside noise further, resists fire for longer and is strong enough for tall walls in a column-and-beam frame. Check the load capacity of the slab or beam that carries the wall before ordering. Diamond, TPI and Smart Block make this thickness to order; ask for a price. Thin-bed mortar use is about 3.0 kg/m² (one bag lays about 15 m²).
Buy 15 cm AAC blocks at OneStockHome
Order 15 cm AAC blocks at OneStockHome by the block or by the full truck (Q-CON 600, THAICON 650 per 6-wheel truck). The per-block price drops on a full truck, delivery is charged by weight, and you can add AAC masonry mortar and a AAC block trowel in the 15 cm size to the same order. Current prices:
Brand | Grade | Price per block | Full 6-wheel truck | Price per block (full truck) |
|---|---|---|---|---|
Q-CON | G2 Extra Cool | 600 blocks | ||
Q-CON | G4 | 600 blocks | ||
THAICON | G4 | 650 blocks | ||
Aerocrete | G4 | – | – |






























