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SikaTile®-100 Moisture Guard is a single component, fast-drying, thin mil, load-bearing waterproofing, and crack isolation membrane for installation under ceramic tile or stone in residential, commercial, and industrial environments.

With excellent elongation, adhesion, and high strength properties, SikaTile®-100 Moisture Guard provides a thin, continuous barrier to protect adjacent rooms and floors below from water damage. For common change of plane areas such as coves, corners, cracks, and drains, it can be combined with optional Reinforcing Fabric to provide additional protection. SikaTile®-100 Moisture Guard dries in 2 to 4 hours depending on ambient conditions and is then ready to receive any Sika polymer or epoxy mortar. SikaTile®-100 Moisture Guard is IAPMO-listed for use as a shower-pan liner, can be flood-tested after 4 to 6 hours of drying time, and exceeds ANSI A118.10 and ANSI A118.12 standards.

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  • For use in areas that require positive waterproofing
  • Crack Isolation up to 1/8” 
  • Fast drying, foot traffic in 2 – 4 hours


SikaTile®-100 Moisture Guard may be installed over any sound substrate normally acceptable to receive ceramic, quarry, porcelain, and stone tiles as a fast drying, 100% waterproof membrane for shower pans and other load bearing waterproofing applications. When installed in accordance with manufacturer’s specifications, SikaTile®-100 Moisture Guard will inhibit transferring of shrinkage and non-structural cracks caused by horizontal movement, when tile and stone finishes are used. Covers and protects most any architectural design forms or irregular shapes and is ideal for interior and exterior use in both residential and commercial applications.  RECOMMENDED SUBSTRATES SikaTile®-100 Moisture Guard can be installed in most interior and exterior residential and commercial installations on floors over the following recommended substrates:
  • Brick Masonry
  • Cement Backer Board1
  • Cement Mortar Beds (cured)
  • Cement Terrazzo
  • Ceramic Tile and Stone
  • Concrete
  • Exterior Grade Plywood2
  • Gypsum Drywall2
  • Gypsum Mortar Bed
  • Gypsum Oriented Strand Board2
  • SikaLevel® Products
1 Consult cement backer board manufacturer for installation recommendations and to verify acceptability for exterior use.
2 Interior Use Only. 


  • For use in areas that require positive waterproofing
  • Crack Isolation up to 1/8” 
  • Fast drying, foot traffic in 2 – 4 hours
  • Flood test after 4 – 6 hour cure
  • Excellent elongation will inhibit the transfer of cracks
  • Antimicrobial for mold and mildew resistance at the substrate
  • Easy installation with brush, roller, or trowel
  • Excellent adhesion – bonds to most flooring surfaces
  • Does not increase surface elevation
  • Interior or exterior
  • Low VOC’s


1 Gallon and 3.5 Gallon Pails


Blue (Dries to a Darker blue)

Sustainability / Certifications / Approvals


Sika® is committed to environmental responsibility in both products produced and in manufacturing practices. Use of this product can contribute towards LEED® v4.1 certification:

  • Up to 2 points towards MR Credit 5, Regional Materials


American National Standards Institute (ANSI) — ANSI A108.01, A108.17, A118.10, and A118.12 of the American National Standards for the Installation of Ceramic Tile ASTM International (ASTM)

  • Resilient Floor Covering Institute - (RFCI) Recommended Work Practices for Removal of Resilient Floor Coverings 
  • ASTM D638 Standard Test Method for Tensile Properties of Plastics.
  • ANSI: Meets A118.10 standard (Waterproofing Membranes for Thin-Set Ceramic Tile) 
  • ANSI: Meets A118.12 standard (Crack-Isolation Membranes for Thin-Set Ceramic Tile)
  • IAPMO: Listed for use as shower-pan liner; IAPMO File #K12899
  • ICC Evaluation Report ESR-2619 -PMG
  • City of Los Angeles, Department of Building and Safety, Research Report #RR-4321
  • Tile Council of North America (TCNA) - TCNA Handbook for Ceramic Tile Installation, TCNA F125, F125A and EJ171 Movement Joint Guidelines.

Product Information

Chemical Base

Emulsion polymer with additives

Shelf Life

15 months from date of production when stored in original, sealed package

Storage Conditions

Store in undamaged, original, sealed package, in dry conditions

System Structure


Test Method


Typical Results




250 psi

Elongation ASTM D412 - 300 - 400%
Seam Strength ANSI A18.10 Section 4.2 > 8 lbs./" width Pass
Breaking Strength ANSI A18.10 Section 4.3 > 170 psi Pass
Dimensional Stability ANSI A18.10 Section 4.4 +/- 0.7% Pass

Cure Time

SikaTile®-100 Moisture Guard is dry when it turns light blue, with no visible dark color as applied. Typically, drying time is 2 to 4 hours; depending on ambient conditions.  Extreme cold and humid conditions will extend drying time up to as much as 12 hours. After the second coat is applied and both coats are fully cured, the application area can be flood tested.

Drying Time

2 - 4 hours*

*When cured at 70 º F (21 º C) and 50% RH.  Ambient conditions may speed or slow drying times.


All surfaces must be between 40º F (4º C) to 90º F (32º C) and structurally sound (deflection not to exceed 1⁄360 of the span), dry, clean, and free from oil, grease, wax, paint, old adhesives, sealers, and curing compounds. Any contaminates which inhibit proper bond must be removed. Substrate preparation should be completed following ANSI A108 AN-2 “General Requirements for Sub-surfaces”. All substrates should be plumb and true, surface deviation should not exceed 1⁄4" in 10’. Patching, leveling or areas requiring a mortar bed should be prepared using SikaLevel® Underlayments. Movement (Expansion) joints should be provided to comply with TCNA method EJ171. Concrete must be free of any negative hydrostatic pressure and/or excessive moisture.



Concrete Substrates: All concrete substrates should be cured a minimum of 28 days. Smooth steel troweled floors should be roughed up using mechanical chipping, scraping, or shot blasting. Dampen porous or dry concrete prior to installation of tile. Do not leave puddles or standing water. Rough or uneven surfaces should be made smooth with a Latex Portland cement underlayment to provide a wood float or better finish. Do not level with asphalt based products. Concrete should be tested for both moisture vapor transmission and hydrostatic pressure, by use of a Calcium-Chloride (CaCl) test. Consult technical support if test readings indicate a reading greater than 5 lbs. per 1,000 sq. ft. in 24 hours. Existing joint openings larger than 3/16” must be prepared and filled with an approved caulking or sealant prior to the application of primer and elastomeric membrane.


Patching, Self-Leveling Compounds, Lightweight Gypsum Concrete: Should be cured to the minimum manufacture’s requirement for moisture sensitive installations.


Plywood and OSB Substrates: Must be a minimum of two (2) layers 5/8” exterior grade plywood (EGP). Plywood shall be securely fastened in accordance with industry standards. Maintain a 1/8” gap between plywood sheets and all surfaces they abut. Joints in the top layer should be offset from the joints on the bottom layer. Maximum joist spacing should be 16” on center and the deflection of the floor structure and sub-floor must not exceed L/360 of the span under combined live or dead loads.


Other Substrates: All other substrates and or sub-flooring systems shall be installed in a manner approved by both the product manufacturer and using appropriate installation method.