In addition, the source of the moisture needs to be
located and fixed prior to installation of the
wallcovering.
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Walls shall be prepared for proper installation of wallcovering in
accordance with wallcovering manufacturers instructions. Wallcovering
shall not be applied to surfaces that are rough, that contain stains that
will bleed through the wallcovering, or that are otherwise unsuitable for
proper installation. Cracks and holes shall be filled and rough spots
shall be sanded smooth. Walls to receive presentation dry erase
wallcovering shall be finished to a Level 4 gypsum wallboard finish in
accordance with GA 214 unless Level 5 is recommended by the wallcovering
manufacturer. Surfaces to receive wallcovering shall be dry. Moisture
content of gypsum wallboard, plaster, concrete, and masonry to receive
wallcovering and the type of moisture meter used shall be as recommended by
the wallcovering manufacturer. Plaster surfaces shall age at least 30 days
prior to installation of vinyl wallcoverings. Interior surfaces of new and
existing gypsum wallboard shall be primed with a wallcovering primer in
accordance with the manufacturer's instructions. As required, white primer
shall be used when substrate color variations are visible through thin or
light color wallcovering. Interior surfaces of exterior masonry walls
shall be sealed to prevent moisture penetration, then primed with a
wallcovering primer in accordance with the manufacturer's instructions.
Masonry walls shall have flush joints. Concrete and masonry walls shall be
coated with a thin coat of joint compound or cement plaster as a substrate
preparation. To promote adequate adhesion of wall lining over masonry
walls, the walls shall be primed as recommended by the wall lining
manufacturer. Primers and adhesives shall be prepared and applied in
accordance with manufacturers instructions. Surface of walls shall be
primed as required by wallcovering manufacturer's instructions to permit
ultimate removal of wallcovering from the wall surface. Primer shall be
allowed to completely dry before adhesive application.
3.3
INSTALLATION
3.3.1
Wall Liner
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NOTE: Provide reinforcing at partitions to support
presentation dry erase wallcovering frames.
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Wall liner shall be installed over masonry walls that are to receive
wallcovering. Liner shall be installed in accordance with the
manufacturer's installation instructions. Liner shall be installed
perpendicular to wallcovering to prevent overlapping of seams between liner
and wallcovering.
3.3.2
Wallcovering
Wallcovering shall be installed in accordance with the manufacturer's
installation instructions. When textile wallcoverings are specified to
comply with NFPA 265, ICC IBC (Section 803.5.1 Textile Wall Coverings), UBC
42-2, or UBC 8-2 testing the wallcovering shall be installed in accordance
with the manufacturer's installation instructions for compliance with the
testing using the same product mounting system, including adhesive. Glue
and adhesive spillage shall be immediately removed from wallcovering face
and seams with a remover recommended by the manufacturer. After the
SECTION 09720
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