LIMITATIONS
• Mapelastic AquaDefense is not for use over structural
cracks, in-plane cracks beyond 1/8" (3 mm) or where
vertical out-of-plane movement occurs.
• Do not use over substrates containing asbestos,
dimensionally unstable substrates such as hardwood
flooring, particleboard, oriented strand board (OSB),
Masonite or metal. See "Suitable Substrates" section
below.
• Do not use over: Plank flooring, treated plywood,
Lauan, gypsum-based floor-patching compounds,
vinyl, glazed tile, laminate, fiberglass or epoxy floors,
or storage tanks.
• Do not use where excessive substrate moisture and/or
where negative hydrostatic pressure exists. Maximum
allowable moisture is 8 lbs. per 1,000 sq. ft. (3.63 kg per
92.9 m
2
) per 24 hours per ASTM F1869 or up to 85%
relative humidity as measured with moisture probes.
• Do not use: As a single-application roof-deck membrane,
wear surface or primary waterproofing membrane on
balconies or decks directly over occupied space or in
storage tanks; or with premixed setting materials.
• Do not allow direct contact with solvent-based materials.
Consult MAPEI’s Technical Services Department for
installation recommendations regarding substrates and
conditions not listed.
SUITABLE SUBSTRATES
Interior and exterior
• Concrete cured for at least 28 days – see the
“Limitations” section above
• Masonry walls of cement block or brick
• Cured cement mortar beds or leveling coats
• Cement backer units (CBUs) – see manufacturer’s
installation guidelines
Interior only
• Gypsum wallboard (walls only, in approved application
areas only)
• Radiant-heated substrates
• Unglazed ceramic tile and cement terrazzo floors, and
gypsum underlayments with a minimum of 2,500 psi
(17.2 MPa) in compressive strength
Note: Existing unglazed ceramic tile must be abraded,
and existing cement terrazzo must be mechanically
profiled. Both must be skimcoated with an appropriate
MAPEI latex- or polymer-modified mortar.
• Plywood underlayments must be a Group 1 exterior-
grade plywood CC-plugged or better, conforming
to APA classification and U.S. Product Standard PS
1-95 or a “SELECT” or (SEL-TF) CANPLY classified
exterior-grade plywood conforming to CSA-0121
standard for Douglas fir for direct-bond applications
(interior, residential and light commercial floors and
countertops in dry conditions only).
• PVC, copper, brass and stainless-steel pipe penetrations
(abraded by sandpaper)
Tile Council of North America (TCNA)
Statement on Deection Criteria
Floor systems, including the framing system
and subfloor panels, over which tile will be
installed should be in conformance with the IRC
[International Residential Code] for residential
applications, the IBC [International Building
Code] for commercial applications, or applicable
building codes.
Note: The owner should communicate in
writing to the project design professional and
general contractor the “intended use” of the tile
installation, in order to enable the project design
professional and general contractor to make
necessary allowances for the expected live load,
concentrated loads, impact loads, and dead loads
including the weight of the tile and setting bed. The
tile installer shall not be responsible for any floor
framing or subfloor installation not compliant with
applicable building codes, unless the tile installer
or tile contractor designs and installs the floor
framing or subfloor.
SURFACE PREPARATION
• All substrates should be structurally sound, stable, dry,
clean and free of any substance or condition that may
reduce or prevent proper adhesion.
• Do not use chemicals (acid etching or stripping)
to prepare approved substrates.
• Concrete substrates should have a concrete surface
profile of #2 per the International Concrete Repair
Institute (ICRI). Mechanically clean and profile by
diamond-cup grinding or other engineer-approved
method when necessary.
• Substrate and room temperatures must be 45°F to
95°F (7°C to 35°C) during and at least 24 hours after
application.
• See the “Surface preparation requirements” reference
guide in the Tile & Stone Installation Systems section
of MAPEI’s Website.
MIXING
Before product use, take appropriate safety precautions.
Refer to the Safety Data Sheet for details.
1. Mix by hand before using.
2. Do not dilute with any other material.
3. Promptly wash tools with water after mixing.
Mapela
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®
Aqu
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AquaDefense
Mapelastic
®