Why We Build with Interlock Blocks — Not Red Brick

The Material Choice That Defines a Bali Build

In Bali's tropical climate — high humidity, occasional flooding, salt air near the coast — the building material you choose has a dramatic impact on the longevity and maintenance cost of your property.

Interlock Block (Concrete Interlocking Block)

Interlock blocks are precision-engineered concrete blocks that lock together without mortar, or with minimal adhesive.

Strength: ★★★★ — Excellent structural integrity for load-bearing walls Humidity Resistance: ★★★★ — Non-porous, resistant to moisture absorption Construction Speed: Fast — Less mortar, precise alignment, less skilled labour dependency Cracking Risk: Low — When installed correctly, very low crack incidence Bali Suitability: ★★★★ — Ideal for humid, coastal environments

AAC Block (Autoclaved Aerated Concrete / Hebel)

Strength: ★★★ — Lighter, less impact-resistant Humidity Resistance: ★★ — Can absorb water if waterproofing is inadequate Construction Speed: Medium — Requires special adhesive and skilled labour Cracking Risk: Medium–High — Prone to cracking if workmanship is poor Bali Suitability: ★★★ — Works well in dry interior areas with skilled teams

Our Verdict

For Bali's coastal and humid environment, Interlock Block is our material of choice for structural walls. The lower cracking risk, superior humidity resistance, and faster construction time outweigh the higher material cost compared to red brick.

For interior partition walls in dry areas with an experienced contractor, AAC can be a cost-effective option.