Hunter Panels Xci Vapor Permeable Self Adhering Water Resistive Barrier is a composite membrane designed for use in above-grade wall assemblies to function as a weather resistive barrier. The specially engineered breathable film is fully coated on one side with a permeable adhesive protected with a silicone release liner. The barrier will adhere firmly when pressed against the substrate and will permit the passage of water vapor while performing as a barrier to air and water. Xci Vapor Permeable Self Adhering Water Resistive Barrier is compatible with Hunter Xci polyiso products, the Xci AEGIS Wall System™, and other building materials such as gypsum sheathing, concrete, and CMU. Surface preparation with primer or contact adhesive may be required in certain circumstances.

Key Features & Design

• Composition and low fuel contribution enable use in many NFPA 285 compliant assemblies
• Fully-adhered membrane prevents water migration and air infiltration versus mechanically attached barriers
• Breathable membrane allows passage of water vapor
• Lightweight, self-adhering rolls allow for fast, easy installation
• Printed facer provides easy product identification
• No spray equipment or mil-thickness measurements required
• Compatible with Hunter Xci polyiso products, the Xci AEGIS Wall System™, and other building materials such as gypsum sheathing, concrete, and CMU.
• Surface preparation with primer or contact adhesive may be required in certain circumstances.

Product Sizes

• 48" x 100' — 400 sq ft per pack
• 12" x 100' — 100 sq ft per pack
• 9" x 100' — 75 sq ft per pack
• 4" x 100' — 33 sq ft per pack

Installation & Compatibility

• Install Xci Vapor Permeable Self Adhering Water Resistive Barrier in horizontal rows (preferred) or in vertical runs.
• Wipedust or debris from film side of product with a clean, dry rag to assist informing tight laps.
• Avoid forming wrinkles and air pockets.
• Press membrane firmly to substrate with a J-roller, especially at laps, corners and terminations.
• Overlap adjoining pieces of the barrier a minimum of 3".
• Use the barrier strips for detailing.
• Sequence the installation to provide shingled laps.
• Membrane shall bear minimum 3" onto each side of transitions such as joints,angle changes and substrate changes.
• Membrane shall bear 6" minimum onto adjacent membrane systems such as foundation waterproofing or roofing.
• Install self-adhered flashing details directly to substrate, not to the barrier.
• Use self-adhered flashings to wrap window openings, to treat pipe/duct penetrations and to cover expansion joints as shown in the product details.
• Seal termination of the barrier onto self-adhered flashings with approved termination sealant.
• Self-adhered flashings and termination sealants such as Aluma-Grip 701, Dow Corning 758, and Pecora AVB Silicone Sealant are compatible with Xci Vapor Permeable Self Adhering Water Resistive Barrier.
• Dusty conditions and installation temperatures below 40°F may require prepping laps with a contact adhesive such as CAV-GRIP.