Some detailed info on building envelope design & building restoration building envelope design
Building envelope design is a specialized discipline that applies principles from structural engineering, materials science, and architecture to create a robust and high-performing building enclosure. Key design considerations include:
- Weather and water management: Designing multi-layered systems to protect against bulk water intrusion from rain and groundwater. This includes a primary layer for bulk water, a secondary drainage plane, and a tertiary water-resistant barrier.
- Thermal performance: Creating a continuous thermal barrier to minimize heat transfer, reduce energy consumption, and improve indoor comfort. Poorly performing envelopes can account for up to 30% of a building’s energy use.
- Air and vapor control: Controlling air and vapor diffusion to prevent moisture condensation within the envelope system, which can cause mold growth and deterioration.
- Structural integrity: Ensuring the envelope can withstand structural loads like wind, seismic activity, and other lateral movements.
- Material selection: Choosing durable, compatible materials that perform well in the specific climate and environment.
- Transition details: Meticulously designing the intersections and junctures where different materials meet to prevent weak spots for water and air infiltration.
Building envelope restoration
Building envelope restoration is the process of repairing, restoring, and rehabilitating an existing building’s exterior to extend its lifespan and restore its performance. Restoration is typically needed for aging buildings that show signs of damage, leaks, or inefficiency due to long-term exposure to the elements. Key steps and services in restoration include:
- Initial investigation: Experts use methods like leak investigation, thermal scanning, and physical observation to diagnose the root cause of the envelope’s failure.
- Façade and masonry repair: Repairing or replacing damaged brick, stone, precast concrete, and other cladding materials.
- Waterproofing: Applying new sealants, membranes, and coatings to prevent water infiltration.
- Window and glazing repair: Addressing issues with a building’s glass surfaces, including fixing leaks, cracks, and damage to windows, curtain walls, and skylights.
- Roofing repair and replacement: Addressing issues with the roof, a primary component of the envelope.
- Structural strengthening: Stabilizing and strengthening the façade and other structural elements.
- Balcony and deck repair: Restoring plazas, terraces, and balconies that are part of the overall envelope.
- Retrofitting: Upgrading existing buildings to improve energy efficiency, often to meet modern energy codes or passive house standards.
