SikaTite UnderTile Water based synthetic rubber
waterproofing membrane for under-tile, and protected applications.
SikaTite UnderTile is a fast curing, single component,
class 3 waterproofing membrane.
Under-tile, or protected waterproofing for use on most
building substrates including; concrete, render, screeds, wet area wall sheets,
fibre cement sheets, brick and MDF.
Characteristics / Advantages
Excellent adhesion to most substrates
Approved for use with CTA tile adhesives, and levelling
systems (polymer modified adhesive acceptable)
Easy clean-up with water and detergent prior to curing
Approvals / Standards
Complies with Green Building Council of Australia VOC
limit requirements (250g/L)
Product Data Form
Appearance / Colour Thixotropic liquid / Standard grey
Packaging 1, 4 and 15L pails
Storage Storage Conditions / Shelf Life Store in
original, unopened and undamaged, in dry conditions at temperature between
+10°C and 35°C. A shelf life of 12 months from the date of production is
achieved when stored in accordance with the above recommendations.
Chemical Base One component, moisture triggered synthetic
Solid Content ~ 60% by weight (+23oC / 50% r.h.)
System Information System Structure
Build-up Minimum of two coats at >= 0.8 litre / m2
applied, with second coat at 900 to the first coat
Wet Film Thickness ~ 0.8mm per coat
Dry Film Thickness For 1.0mm DFT (minimum)
* consumption figures are theoretical and do not allow
for any additional material due to surface porosity, surface profile,
variations in level and wastage etc.
Concrete / Cementitious Substrate, For standard
applications concrete should be cured for at least 28 days and be free of dust,
dirt, curing compounds and other contaminants. Any cracks or voids larger than
1mm should be filled
Other substrates, Should be free of dust, dirt, and other
Normally not required *)
SikaTite Porous Primer
SikaTite Non-Porous Primer
Moist, or Green (to 93% RH)
SikaTite Moisture Seal 1K, or SikaTite Moisture Seal
15 minutes for second coat (0-90% R.H.) 45 minutes for
third coat (90-93% R.H.) Overcoat with SikaTite membrane after 1 hour
note: times are based upon ambient / substrate
temperature and relative humidity of 18oC & 50%
Application Conditions / Limits
Substrate Temperature min. +10oC; max. +35oC
Ambient Temperature min. +10oC; max. +35oC
Ambient Humidity max. 85% r.h.
Dew Point Beware of condensation! The substrate and
uncured membrane temperature must be at least 3oC above the dew point to reduce
the risk of condensation or blooming on the membrane finish.
Application Method SikaTite UnderTile can be easily
applied by brush or roller. Care is to be taken to ensure that minimum material
consumption is met per the Consumption table.
Floor Wall Joints Joints must be treated either using
SikaTite ElastoJoint bandage system, or using SikaSil Pro, or other Sika
neutral cure silicon. If SikaSil is used it must be left for minimum 24 hours
at 180 C before it can be overcoated with SikaTite UnderTile membrane.
Terminations Where a terminating sealant is required,
such as around windows, Sikaflex Clear should be used.
Application Tools By brush: with a soft bristle brush By
roller: with a solvent resistant, non-shedding synthetic nylon roller
Cleaning of Tools Clean all tolls and application
equipment with water and detergent immediately after use. Hardened and/or cured
material can only be removed mechanically.
Overcoat 4-6 hours
Tile 48 hours
*~23°C / 50% r.h. ** recommended for use with CTA tiling
Note: times are approximate and will be affected by the
layer thickness, the substrate temperature.
Notes on Application / Limitations
SikaTite Non-Porous Primer should be used on metal
substrates SikaTite Elastojoint bandages, corners, and tap flanges recommended
for detailing Not to be used on substrates with rising damp Contact Sika
Technical Support team for further advice as required
All technical data stated in this Product Data Sheet are
based on laboratory tests. Actual measured data may vary due to circumstances
beyond our control.
Health and Safety Information
For information and advice on the safe handling, storage
and disposal of chemical products, users should refer to the most recent
Material Safety Data Sheet containing physical, ecological, toxicological and
other safety-related data.
The information, and, in particular, the
recommendations relating to the application and end-use of Sika’s products, are
given in good faith based on Sika’s current knowledge and experience of the
products when properly stored, handled and applied under normal conditions. In
practice, the differences in materials, substrates and actual site conditions
are such that no warranty in respect of merchant-ability or of fitness for a
particular purpose, nor any liability arising out of any legal relationship
whatsoever, can be inferred either from this information, or from any written
recommendations, or from any other advice offered. The proprietary rights of
third parties must be observed. All orders are accepted subject of our terms
and conditions of sale. Users should always refer to the most recent issue of
the Technical Data Sheet for the product concerned, copies of which will be
supplied on request