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SikaTop®-107 Seal WR

Waterproofing and Damp-proofing Cementitious Slurry

SikaTop®-107 Seal WR is a 2-part polymer modified cementitious waterproof mortar slurry comprising of a liquid polymer and cement based mix incorporating special admixtures.
Suitable for use in hot and tropical climatic conditions

  • Easy to apply by brush or in thin trowel applications
  • No water required
  • Pre-batched components
  • Hand applied
  • Easy and fast mixing
  • Very good adhesion
  • Protects concrete against carbonation
  • Protects against water penetration
  • Over-paintable
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Usage

  • Interior and exterior waterproofing and damp-proofing of concrete, cementitious rendering, brickwork and blockwork
  • Concrete surface protection, to improve the durability
  • Rigid waterproofing of wet areas/basement walls in new construction and refurbishment
  • Pore / blowhole filling
 
  • Waterproofing and protection of hydraulic structures such as: basins, tanks, concret piping, bridges, canals
  • Sealing fine “hairline” cracks in concrete structures (not subject to movement)
  • Waterproofing of terraces, balconies and wet areas underneath protection screed and tiles

Advantages

  • Easy to apply by brush or in thin trowel applications
  • No water required
  • Pre-batched components
  • Hand applied
  • Easy and fast mixing
  • Very good adhesion
  • Protects concrete against carbonation
  • Protects against water penetration
  • Over-paintable

Packaging

22.5 kg set 

Component A: Liquid

4.5 kg pail

Component B: Powder

18 kg bag

Product Details

Product Information

Composition

Blend of Portland cements, selected graded aggregates, admixtures, liquid polymers and additives.

Shelf life

6 months from date of production if stored properly in undamaged and original sealed packaging.

Storage conditions

Store in original unopened packaging in cool and dry conditions between +5 °C and +35 °C. Protect from direct sunlight and frost.

Density

~2.0 kg/l (fresh mortar at +25 °C)

Volatile organic compound (VOC) content

< 1 g/l

 
Technical Information

Compressive strength

~28 N/mm² (28 days curing, +23 °C, 50 % r.h.)

(ASTM C109)

Testing carried out at mortar consistency

Flexural-strength

~6 N/mm² (28 days curing, +23 °C, 50 % r.h.)

(ASTM C348)

Testing carried out at mortar consistency

Tensile adhesion strength

~1 N/mm²

(ASTM D4541)

Watertightness

No penetration

Application

Application Information

Mixing ratio

A:B = 1:4 by weight

Layer thickness

Minimum 0.75 mm per coat

Maximum 1.5 mm per coat

Note: A minimum of two coats shall be applied for waterproofing or damp-proofing applications. In areas subject to severe water ingress, three coats is recommended.

Ambient air temperature

+5 °C min. / +40 °C max.

Substrate temperature

+5 °C min. / +40 °C max.

Pot Life

~30 minutes at +20 °C

Waiting time to overcoating

Between coats:

+20 °C~6 hours
+30 °C~3 hours

Note: Waiting times are approximate and will be effected by ambient and substrate conditions.
Consumption

Consumption

~2.0 kg/m² at 1 mm thickness

Note: This figure does not include additional material required due to surface porosity, surface profile, variations in level and wastages.

Yield

1 set of 22.5 kg yields ~11.25 l of mixed slurry
Application steps

SUBSTRATE QUALITY

The pull-off strength (tensile adhesion strength) of cement based substrate must be ~1.0 N/mm² or higher.

SUBSTRATE PREPARATION

  • Substrates must be properly cured, structurally sound, free of any loose or friable particles, cement laitance, clean, dry and free of any contaminants such as dust, dirt,oil, grease, cement laitance or efflorescence.
  • Depending on the substrate condition and contaminants to be removed from the surface, perform adequate preparation techniques, such as water-jet washing or blast cleaning, to remove all traces of any materials that could reduce the product's adhesion to the substrate.
  • Any small surface defects and variations in level, profile, or around exposed aggregates for example, canbe prefilled and levelled with an additional layer SikaTop®-107 Seal WR. For larger and thicker areas of surface reprofiling and making good, appropriate mortars from the SikaRep®, Sika MonoTop® or Sikafloor® Level range should be used. Cracks in substrates must be identified and sealed appropriately e.g. with Sikadur® epoxy resins.
  • For applications in hot climates / environments and / or on absorbent substrates, thoroughly pre-dampen the surface immediately prior to the product application, but avoid any ponding / standing water.

MIXING

SikaTop®-107 Seal WR must be mechanically mixed using a forced action mixer, in a clean drum, or using a drill and paddle (max. 500 rpm). A normal concrete free fall mixer is NOT suitable.

Stir Part A (liquid) thoroughly before pouring approximately half into a clean mixing container.
Add Part B (powder) slowly while mixing continuously.

Add the remaining portion of Part A and continue mixing, until a uniform, lump free consistency is achieved (~3 minutes).

The Part A component can be reduced to provide a thicker mortar consistency depending on the application requirement. Consult Sika Technical Department for advice.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with clean water immediately after use. Hardened / cured material can only be removed mechanically.

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