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Schluterģ-DITRA Installation over Wood

Schluterģ-DITRA Installation over Wood

Schluter

-DITRA is specifically designed to allow  the

installation

of ceramic and stone tile over   any even and load bearing substrate. The first  step in a successful project is planning.   The

Schluter

-DITRA

Installation

  Handbook includes comprehensive  

installation

guidelines and warranty criteria. The planning process starts by searching for   the detail applicable to your project based on  the substrate, tile type, and other factors.   All requirements in the Handbook are  important. Please pay close attention   to the setting materials and movement joints  requirements when planning any DITRA project   After finding the applicable DITRA 

installation

handbook detail and   confirming that all requirements can be met, we  can create a list of materials and quantities.   When installing DITRA, the  following tools are commonly used:   - A Tape measure, - A Marker,   - A Utility knife or scissors, - Buckets,   - One-half inch electric drill and mixing  paddle suitable for thin-set mortar,   - A Margin trowel, - A DITRA-TROWEL or one-quarter-inch   by three-sixteenths V-notched trowel, - A

Wood

or magnesium float   - A Chalk line reel, - Hairspray,   - A Notched trowel for tile setting - And a Grout float   Project planning is now complete.   Now we re ready to prepare  for the

installation

.   It is important to have a perimeter movement  joint throughout the tile assembly. One option,   as shown here, is to fasten a strip of Sill ...
schluter  ditra installation over wood
Seal, a compressible polyethylene gasket,   to the surrounding walls to ensure a  consistent joint along the perimeter.   The substrate must be clean, even, and load  bearing. Any leveling of the subfloor must   be done prior to installing DITRA. Sweep the floor to remove any debris.   For

wood

substrates, verify that subfloor panels  are properly fastened to framing members.   Measure and cut the matting using  a utility knife or scissors.   Clean any dust from the  substrate with a damp sponge.   Now we re ready to begin the

installation

. DITRA is installed simply and   easily with thin-set mortar. In this case a modified thin-set mortar is used,   because the matting is being installed over

wood

.  Always verify the proper type of mortar required   to install DITRA based on the substrate. The mortar is mixed to a fairly fluid consistency,   but still able to hold a notch. A one-quarter inch by three-sixteenths inch   V-notched trowel or the

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-DITRA-TROWEL,  which features a four-point-five millimeter by   four-point-five millimeter square-notched  design, is used to apply the mortar.   Apply a thin layer of the mortar with the flat  side of the trowel to produce solid contact   with the substrate and then comb additional  mortar using the notched side of the trowel.   Apply the DITRA, fleece side down and solidly embed in the mortar using   a float or the DITRA-ROLLER. When using the DITRA-ROLLER,   place a weight on the shelf...
schluter  ditra installation over wood
and slowly move the  roller from one end of the matting to the other,   slightly overlapping successive passes. Bags of thin-set mortar or grout or boxes   of tile can be used as weight, provided the total  weight is kept under seventy-five pounds.   Make sure to observe the open time of the  thin-set mortar. If the mortar skins over,   remove and reapply fresh mortar  before installing the membrane.   The risk of skinning is increased when  installing a longer run of DITRA. Applying   the mortar and embedding the membrane in shorter  sections will help avoid this problem.   Lift up a corner of the membrane to check  coverage. Proper

installation

results in   full contact between the fleece webbing and  the thin-set mortar. Re-embed the membrane.   Coverage may vary with mortar consistency, angle  at which the trowel is held, membrane application,   and other factors. If full coverage is not  achieved, remove and reapply, making sure to   observe proper

installation

techniques. For DITRA-XL, it may be beneficial to use a   trowel with larger notches, such as a one-quarter  inch by one-quarter inch square-notched trowel.   This process is repeated  over the entire floor.   Since we ll be installing a movement joint  profile at the floor-to-wall transition,   we need to cut the sill seal above the DITRA.  Otherwise we would leave the gasket in place   until after the tile was set and grouted. The

installation

of the DITRA membrane   is...
schluter  ditra installation over wood
now complete. Floors can be made fully   waterproof with DITRA if desired by sealing  seams and floor-to-wall transitions with  

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-KERDI waterproofing accessories. The KERDI accessories can be installed   using any of our thin-set mortars  or an unmodified thin-set mortar.   The mortar is mixed to a fairly fluid  consistency, but still able to hold a notch.   A one-quarter inch by three-sixteenth inch  V-notched trowel or the

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-KERDI-TROWEL,   which features a one-eighth inch by  one-eighth inch square-notched design,   is used to apply the mortar. Apply thin-set mortar to the   area where the

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-KERDI-KERECK corners  are to be installed. Fill the cavities in the   DITRA matting and comb additional mortar  using the notched side of the trowel.   Embed the KERDI-KERECK into the  thin-set mortar using the flat side   of the trowel or a dry wall finishing knife. Corner

installation

may be simplified by holding   one side of the corner in place while embedding  the other side of the corner in the mortar.  

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-KERDI-BAND waterproofing strips are used  to seal seams and floor-to-wall connections.   The band may be creased prior to 

installation

to help maintain tight   corners and simplify subsequent tile setting. Apply thin-set mortar to the area where the   KERDI-BAND is to be installed. Embed the KERDI-BAND in the thin-set   mortar using the flat side of the trowel to  ensure full coverage and remove air pockets....
  Note that a 2 inch overlap can be achieved at  KERDI-KERECK corners without continuing the   KERDI-BAND all the way to the corner. This will  limit build-up of the membrane in these areas.   This process is repeated at remaining  floor-to-wall transitions and DITRA   seams. Always ensure that a minimum two inch  overlap is achieved at all locations.   The waterproofing application is now complete. Tile may be installed immediately over   DITRA using thin-set mortar . We have already figured out our   tile layout and have applied chalk lines  to guide our

installation

. Hairspray helps   ensure the chalk doesn t easily wipe off  the membrane. The hair spray will not act   as a bond breaker because the thin-set mortar is  mechanically locked into the top of the membrane.   Fill the cut back cavities with thin-set  mortar . Then comb additional mortar over   the matting using a notched trowel that is  appropriate for the size of the tile.   Back-buttering large-format tiles is a useful  way to help ensure proper coverage. The skim   coat can fill in the concave area  on the back of the tile and improve   contact with the mortar combed on the substrate. Solidly embed the tiles in the setting material,   making sure to observe the open time  of the mortar. Slide the tile back   and forth to collapse the mortar ridges and  transfer the mortar to the back of the tile.   Periodically remove a tile to check coverage.  Run a margin trowel...
through the bond coat   and slide the tile before pulling up to avoid  creating tension on the surface of the DITRA;   this is especially important soon  after the matting

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.   Proper

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results in full coverage  of the mortar to the back of the tile. Industry   standard guidelines for ceramic tile require a  minimum of eighty percent coverage in dry areas   and ninety-five percent coverage in wet areas.  Tile edges and corners must be fully supported.   If sufficient coverage is not achieved, remove  the tile and reapply, making sure to verify   proper mortar consistency, application,  and tile embedding techniques. Consider   back buttering large format tiles. Continue setting the remaining tile.   Profiles are a useful tool to enhance  any floor tile

installation

.   DITRA does not eliminate the need  for movement joints within the tile   covering. This includes perimeter joints  at restraining surfaces such as walls.   As an alternative to sealant,

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-DILEX  movement joint profiles accommodate movement   and protect tile edges, resulting in a  permanent, maintenance-free

installation

.   DILEX-EKE creates a discreet, uniform  joint at floor-to-wall transitions.   DILEX-BWS matches common grout joint widths  and is available in a variety of colors,   allowing it to blend into the tile field. Because ceramic and stone tiles are inherently   brittle, their exposed edges can chip and  crack if left...
unprotected. Transitions   between floor surfaces and at thresholds  are particularly vulnerable to damage.  

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-Systems offers a variety of floor  profiles to provide edge protection and   transitions at thresholds and  between adjacent surfaces.   For example,

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-RENO-TK is designed  to provide a smooth transition from   tile coverings to floor coverings at  lower elevations, typically carpet.   Wall profiles like

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-RONDEC or QUADEC  make it possible to create a tile base using   field tiles without ceramic trim. This simple  approach increases the utility of the room and   produces a clean, finished appearance. Ceramic and stone tiles are the ideal   surface coverings because they are beautiful,  durable, hygienic, and easy to maintain.   However, the long-term performance of the  covering depends on the

installation

method.   The integration of

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-DITRA s  uncoupling, waterproofing vapor management,   and support functions ensures consistent  success over common tile substrates.   With over twenty-five years as the  industry leader in uncoupling technology,  

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-Systems remains committed  to providing innovative solutions   for floor tile applications that  meet the needs of the installer.