Henry Blueskin SA is a self-adhering membrane consisting of an SBS rubberized asphalt compound laminated on a blue polyethylene film. Impermeable to air, moisture vapor and water, Blueskin® SA is designed to install easily on a variety of prepared substrates. Henry Blueskin SA is designed for use as a self-adhered air, vapor and water resistive barrier. It can also be used as a transition sheet in conjunction with Henry® Air-Bloc® fluid applied air barriers. where greater movement is anticipated due to its high strength. Blueskin SA is also used for tying into metal on curtain walls, windows and doorframes. Questions? Contact Us.
Blueskin® SA Self-Adhered Water Resistive Air Barrier
All surfaces to receive Blueskin SA require an application of Blueskin Adhesive, Blueskin LVC Adhesive or AquatacTM Primer allowed to dry to a tacky film before Blueskin SA is applied. Coated surfaces not covered by membrane during the working day must be recoated. Availability may vary by region.
Apply: Position Blueskin SA for alignment and remove release film and press firmly in place. Roll membrane, including seams, with a countertop roller to ensure full contact once in place. Membrane must be rolled after application to ensure adhesion to substrate and laps. Blueskin® SA must be lapped a minimum of 2” (50 mm) on both sides and end laps. When using with brick ties, position, press in place and cut for ties or projections. Seal around any openings and at leading edge at the end of the workday with 925 BES Sealant, Air-Bloc 21 or Air-Bloc 21FR. Detail work must be carefully carried out to ensure continuous air tightness of the membrane. It is recommended that mechanical attachment be made to all window and doorframes, or a properly designed sealant joint be provided.
Membrane applied to the underside of the substrate (i.e. ceilings) and extending more than 6 inches (152 mm) onto inverted surfaces requires requires mechanical fastening through treated wood or galvanized metal strapping, or have insulation mechanically fastened. Fastening must take place immediately after installation of the membrane. Space strapping on 18” (457 mm) centers, running perpendicular to the side laps.
Insulation Application: The use of mechanical fasteners through Blueskin® SA along changes in plane, such as inside corners, may be required by some insulation manufacturers. Consult insulation manufacturer prior to installation of insulation.
- Insulation Clips: Insulation clips should be mechanically fastened through the membrane into the substrate with a self- tapping screw. Apply number of insulation clips as recommended by the insulation manufacturer.
- Insulation Adhesive: Air-Bloc® 21 or Air-Bloc® 21FR should be applied to insulation boards in a serpentine pattern to restrict movement of air behind the insulation. Alternatively, a full coat notched trowel application may be applied to the back of the board. Press insulation firmly in place.Limitations: Blueskin® SA is designed for exposure up to 90 days if necessary to accommodate construction scheduling, but is not designed for permanent exposure to ultraviolet light and should be covered as soon as practical after application. It is not to be used in direct contact with flexible PVC/vinyl membranes or gaskets. Consult the PVC/vinyl window manufacturer for compatibility.