If staples are used the Zero Perm tape must cover all penetrations. In either case the joints of the vapor barrier should be butted and sealed with Zero Perm tape. Masonry Zero Perm can be installed against masonry in a fully coverage of Alumiseal recommended adhesive or spot adhered depending upon the architects specification. Alumiseal adhesive can easily applied by smooth paint roller, brush or spray. After applying the adhesive allow it to become tacky before installing the vapor barrier.
Adhesive can be spot adhered to secure vapor barrier to roof deck.
Alumiseal Zero Perm should be applied as outlined above with the exception that the vapor barrier would be placed over or on top of the roof insulation and directly under the single ply roof system. Should other building materials be applied over the vapor barrier, additional fastening systems are recommended. Should furring or finish sheet be attached over the vapor barrier surface, the fastening systems are recommended. Should furring or finish sheet be attached over the vapor barrier surface, the fasteners penetrating the vapor barrier should pass through a bead of quality butyl caulking. All staple heads should be covered and sealed with Zero Perm Pressure Sensitive tape.