Product Brochure

18
All fastener points are visibly covered with wedi joint sealant. All protrusions
(ie. plumbing fixtures) are sealed into the wedi assembly with wedi gaskets
and sealant. All visible joints or seams in the installation are visibly covered
and reinforced with wedi Joint Sealant that is applied flat over the seams.
Coverage of wedi Joint Sealant over all seams should be at least 1 in. on either
side of the seam. wedi Joint Sealant should be no less than 1/16 in. thick to
ensure strength. Do not add mesh tape into the wedi Joint Sealant; this may
put the waterproofing performance at risk, and will not strengthen the sealant
or system resistance against movement-related stresses. It is recommended
to add wedi mesh tape over seams featuring outside corners (e.g. pony wall
tops or curb deck transitions). The wedi mesh tape is applied over finished
and topically sealed seams once these are dry to the touch. wedi joint sealant
is then applied to cover the mesh. This method allows you to apply more
sealant consistently over a transition where it is difficult to apply sufficiently
thick sealant. The mesh functions here as a thickness gauge, but has no other
function. Once wedi Joint Sealant has been applied over all shower system
seams, an optional water flood test may be performed in as little as 2 hours.
Please ensure the sealant has cured sufficiently and has formed a skin no longer
pliable or sticky leaving sealant residue upon touch. The sealant is a moisture
curing product that will react to cure very slow when applied in a location
with low relative humidity in the air, and it will overreact and malfunction if
exposed to too much water (e.g. flood test) too early. The flood test should
not exceed 24 hours, nor should the water level exceed the height of the
perimeter seams so that the fresh sealant may continue to a full cure without
too much weight added during that process. wedi recommends testing
the drain connection for a proper seal. While a full surface flood test is not
required for non-absorbing products like wedi, it may be required by a building
inspector. When tiling commences, no premixed (“mastic”) tile adhesives
may be used over wedi systems in any wet area installation. When tiling the
wedi Shower Bases, incl. extensions or ramps, tile thickness should generally
be no less than 1/8 in. Choose setting materials appropriate for the type of
stone, ceramic, or glass tile as well as for a wet area installation. When tiling
with a square tile size of 2 in. × 2 in. or more, install using a polymer
modified cement based tile adhesive and grout. When tiling with a
square size of less than 2 in. × 2 in., install using a polymer modified
cement based tile adhesive and use a 100 % solids epoxy grout. When
tiling with a square size of 1 in. × 1 in. or less, install using a 100 %
solids epoxy tile adhesive and grout. Only non-flat bottom pebble
stone installations, including small mosaics, may be installed using polymer
modified cement based tile adhesive and grout if the mortar fully supports
the tiles rounded undersides. All flat bottom pebble stone installation are
subject to the general tile size based setting materials recommendation
outlined above. When installing non-square tile, the length of the shortest
tile edge(s) are considered as its square size for the purpose of determining
the choice of the setting materials as outlined above. Moisture sensitive
tile and stone, including marble, are best protected when installed using
solid epoxy tile adhesive and grout. It is recommended to verify with
manufacturers of mesh mounted tile that the adhesive and mesh used to
back the tile is appropriate for use in wet areas. It is important to achieve
full transfer of the thinset mortar through the mesh to the back of the tile.
A best practice we recommend is to remove the mesh when setting the tile.
All tile installations designed to receive heavier point loads (i.e. wheelchair
use) must be grouted using 100 % solids epoxy grout. Large format tile may
be installed over wedi Fundo shower bases. Cuts may have to be made in
consideration of the base’s slope lines and so that the tile can always be fully
supported by the tile adhesive setting bed, and the surface of the wedi Base.
Refer to TCNA guidelines for setting material coverage required by the tile
being installed in the wet room application here. Use only cleaners and sealers
free of acid or solvents on tile or grout installed over wedi product, and apply
only in amounts needed to treat the surface materials without drenching the
substrate. Follow setting materials manufacturer‘s recommendations, and
contact wedi with any questions, or regarding applications not covered here.
 Where wedi building panel or curb overs / caps are installed over horizontal
surfaces (seats, curbs, tubdeck transitions) do not set any fasteners and do
not allow the glass door installation to penetrate the wedi panel as it is
your waterproong.
 Make sure that doors are installed tight to contain water inside the shower.
Make sure doors are installed to only load bearing reinforced framing.
Consider wedi CURB AT (Anchor Track) when planning to mount glass
door/panel xtures through the curb surface.
assembled (see next steps).
30. Place the drain cover unit into the Drain Cover Extension where it fits into a tight seat. The cover is now vertically adjustable
and can also move horizontally to fit the tile layout.
31. The drain cover unit can still be moved laterally 3/16 in. in either direction, and can be aligned with the tile regardless of
how much height was added.
32. The wedi Fundo Primo Shower System is now ready for tiling as soon as the surface applied wedi Joint Sealant is dry to
the touch.