Passive House Construction with BCA Blocks (Ep 4: First Floor Walls & Columns Step-by-Step)

In this episode, we continue the on-site construction of our energy-efficient Passive House. Watch as we move from the foundation to building the first-floor walls and structural columns using Autoclaved Aerated Concrete (BCA/ AAC) blocks. We show the detailed process of laying BCA blocks with thin-bed mortar, a crucial technique for achieving the airtight envelope required in Passive House standards. You'll see how we install the vertical reinforcement and prepare for the concrete columns that provide the structural framework. Key steps covered include setting up guide strings for perfect alignment, cutting blocks for precise fits around column forms, and the importance of continuous insulation. This stage is critical for the thermal performance and structural integrity of the entire building. Follow our journey to build a sustainable, ultra-low energy home. Using BCA blocks offers excellent thermal insulation, fire resistance, and construction speed, making it an ideal material for modern, efficient buildings. Subscribe and hit the bell icon to follow the entire Passive House build series from the ground up.