Installation Guide

PRODUCT APPLICATION
• Apply when substrate and ambient temperatures are between 40°F and
95°F (4°C and 35°C).
• Install Mapeguard 2 only in conjunction with undiluted MAPEI SM Primer or
MAPEI SM Primer Fast.
• Allow MAPEI SM Primer or MAPEI SM Primer Fast to dry tacky before
installing Mapeguard 2.
1. Individual crack isolation before installing tile
1.1 Mapeguard 2 may be applied directly to the substrate area that has
existing in-plane cracks (with movement up to 3/8" [10 mm] wide).
1.2 Cut Mapeguard 2 to size so that the length and width of the
membrane will cover the entire length and width of the crack, plus 3
times the width of the largest tile being used.
1.3 Center the cut membrane over the crack’s width and length. Mark on
the floor where the membrane is to start.
1.4 Set aside precut sections (or entire rolls) of Mapeguard 2. Continue
with installation instructions at Step 2.3.
2. Full-floor crack isolation (or sound reduction)
2.1 To effectively isolate and protect an entire tile installation from existing
or future substrate cracks, and to achieve effective sound reduction,
Mapeguard 2 must be installed over 100% of the substrate that will
be covered with ceramic tile or stone. For effective sound reduction,
an approved acoustical sealant should fill gaps between the end of
the tile or wood and walls, columns, etc.
2.2 Unroll Mapeguard 2 and cut it to size for the substrate to be tiled. For
easier handling and installation, each roll may be cut into shorter
lengths (such as 10 feet [3,05 m]) before installation. Ensure that all
edges or ends of each roll abut edges or ends of other rolls. To ensure
a flat surface and proper sound reduction, do not overlap edges or
ends from one roll onto another.
2.3 Number each sheet and mark its starting point on the floor.
2.4 Set aside precut sections of Mapeguard 2.
3. MAPEI SM Primer or MAPEI SM Primer Fast application
3.1 Using a roller or brush, prime the clean, properly prepared substrate
with MAPEI SM Primer or MAPEI SM Primer Fast.
3.2 Allow the primer to dry until tacky (about 10 to 15 minutes).
4. Mapeguard 2 installation
4.1 Peel back the first 1" (2,5 cm) of release film from the end of the precut
sections or roll.
4.2 Apply this leading edge at the previously marked starting point to the
primed and tacky substrate.
4.3 Continue removing short amounts of release film and apply the
membrane to the substrate. Continue until the substrate is covered
with the membrane.
4.4 To ensure a positive bond between the sticky membrane and
substrate, roll a 75-lb. to 100-lb. (34,0-kg to 45,3-kg) roller over the
installed membrane.
Ceramic tile,
natural stone
or wood
Concrete
slab
MAPEI SM Primer or
MAPEI SM Primer Fast
Mapeguard 2
membrane
MAPEI tile mortar
or wood adhesive