AWCI’s Member Products Catalog - 2021 - XCI4

Hunter Panels Xci VP-SA WRB
Vapor Permeable Self-Adhering Air and Water Resistive Barrier
Surface Preparation

Installation

Apply contact adhesive, such as CAV-GRIP, as needed to surfaces accepting
Xci VP-SA WRB. Follow the application instructions on the contact adhesive
product data sheet. If weather conditions are dry and substrate and ambient
temperature is 40°F or higher, preparation with contact adhesive can be
omitted on wood and gypsum sheathing products and Hunter Xci continuous
insulation products including Xci Foil, Xci Foil Class A, Xci CG, Xci CG Class A,
Xci Ply, Xci Ply Class A, or Xci NB.
Note: Solvent-based contact adhesives are generally NOT acceptable for
use with Xci VP-SA WRB because these contact adhesives are impermeable.
Impermeable solvent-based contact adhesives may be used in applications
where the vapor-permeable feature of Xci VP-SA WRB is not necessary, such
as installation over Xci Foil or Xci Foil (Class A).

Install Xci VP-SA WRB in horizontal rows (preferred) or in vertical runs. Wipe
dust or debris from film side of product with a clean, dry rag to assist in
forming 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 Xci VP-SA WRB a minimum of 3". Use Xci VP-SA
WRB 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 Xci
VP-SA WRB. Use self-adhered flashings to wrap window openings, to treat
pipe/duct penetrations and to cover expansion joints as shown in Xci VP-SA
WRB details. Seal termination of Xci VP-SA WRB 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 VP-SA WRB. Dusty conditions and installation
temperatures below 40°F may require prepping laps with a contact adhesive
such as CAV-GRIP.

Substrates
Foam Sheathing
Sheathing boards shall be flush at joints. Sheathing boards shall also be
secured to the structure according to building code and sheathing manufacturer's requirements. Sheathing boards shall be repaired or replaced if
inspection reveals moisture damage, mechanical damage or if sheathing
boards have exceeded the exposure duration or exposure conditions as
required by the sheathing manufacturer. Fill all joints exceeding ¼" in width
with approved sealant and strike flush.
Wood Products: OSB, Plywood, FRT Wood, Lumber
Wood sheathing inspection carries the same protocol given for foam sheathing.
In addition, moisture content, measured with a wood moisture meter in the core
of the substrate, shall be below 20%. Do not cover any wooden materials with
Xci VP-SA WRB if moisture content is 20% or more. Do not encapsulate wood
(such as blocking/nailers) with Xci VP-SA WRB as this will cause premature rot.
Gypsum Sheathing
Gypsum sheathing inspection follows the same protocol as given for both
foam sheathing and wood sheathing. When installing Xci VP-SA WRB over
gyp-sheathing with glass-mat facers, coverage rates for contact adhesives
and primers will depend on the porosity and texture of the sheathing and can
vary substantially by brand. It may be necessary to decrease coverage rate
or apply multiple coats. Contact adhesives and primers shall be allowed to
dry completely before additional coats are applied or membranes installed.
Glass-mat facers can take longer to dry than other substrates and lower
temperatures will extend drying time. Multiple adhesion tests should be
performed randomly to verify proper application of primer and ensure a
successful application.
Concrete
Shall be cured in place for 7 days minimum. It shall be smooth, with sharp
protrusions such as form joints ground flush. Honeycomb and holes/cracks
exceeding ¼" across in width shall be filled with grout or mortar.
Concrete Masonry Unit (CMU)
Mortar joints shall be struck flush and shall be free of voids exceeding
¼" across. Mortar droppings shall be removed from brick-ties and all other
surfaces accepting Xci VP-SA WRB. Mortar joints shall be allowed to cure
3 days minimum prior to installation of Xci VP-SA WRB.

Repair and Protection
Repair damage to barrier by removing loosely adhered material and re-covering with Xci VP-SA WRB patch, extending beyond the damage by at least 6" in
all directions. Where repair patch is to be installed, clean debris from surfaces
of the old Xci VP-SA WRB and prepare with a contact adhesive such as CAVGRIP. Seal terminations of repair patch with approved flashing or termination
sealant. If multiple sheets are used in repair/re-cover, offset seams of new
installation from underlying Xci VP-SA WRB by 12" minimum. Xci VP-SA WRB
is not intended for permanent outdoor exposure and should be covered as
soon as possible after installation, not to exceed 180 days.

Limitations
* Do not allow any sealants or liquid membranes to contact Xci VP-SA WRB
except Aluma-Grip 701, Pecora AVB Silicone Sealant, Dow Corning 758 or
other product approved by Hunter Panels
* Do not proceed with installation unless ambient and substrate temperature
are 20°F or above
* For exterior use only; will not perform as a water resistive barrier in negative
side applications
* Do not install below grade, or in areas where ponding water is expected
* Not intended for traffic resistance or as a wearing surface
* Do not install on roofs
* Do not install over un-cured sealants
* 180 day max. UV exposure prior to cladding installation

Packaging
Xci VP-SA WRB Full Rolls
48" X 100' roll, 1 roll/box

Storage

Xci VP-SA WRB Slit Rolls
4" X 100' roll, 6 rolls/carton
9" X 100' roll, 2 rolls/carton
12" X 100' roll, 2 rolls/carton

Store Xci VP-SA WRB in a protected area below 90°F. In cold weather, condition rolls to 50°F or warmer to facilitate use. Shelf life in original, un-opened
packaging is 1 year.

Hunter Panels | Energy Smart Polyiso | 88 8.746.1114 | www.hunterpanels.com
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AWCI’s Member Products Catalog - 2021

Table of Contents for the Digital Edition of AWCI’s Member Products Catalog - 2021