Determination of water vapour diffusion across brick masonry treated with water repellent sealers.

Describes the experimental evaluation of a brick veneer steel stud (BVSS) test specimen. The system was evaluated for air leakage characteristics, pressure equalization response, deflection and water penetration. Concludes that for best results for BVSS walls, the air barrier must be sufficiently airtight to achieve static pressure equalization and there must be sufficient venting to achieve dynamic pressure equalization. Similar results were obtained from research conducted on other wall systems. For the BVSS wall system, however, the air barrier is more flexible than the rainscreen, having a negative effect on pressure equalization response.