Gypsum panels, applied to the exterior of buildings with seams taped or liquid sealed, are mostly used in commercial construction. The application is well suited to residential buildings as a panel-type air barrier.
Important considerations for Gypsum Panel air barrier applications:
Common and well understood material from commercial construction
Broad coverage offers ease of installation
Good fire resistance - gypsum is well known for this property
Has vapour retardant properties and additives for water resistance
Pay careful attention to sealing at seams and transitions, to ensure continuity of the air barrier.