TOA Water Bloc

TOA Water Bloc is a special SBR modified-polymer, designed to possess waterproofing properties and extremely flexible with 1000 % elongation. It is a ready to use from the container.

TOA Water Bloc provides the following beneficial properties:
- Water based, easy to use.
- 1000% elongation approx.
- Prevent water penetration.
- Can be fixed on concrete substrate and paint.
- Against hydrostatic pressure for positive and negative side.
- Good adhesion to various substrates ie. concrete, wood, existing tile, metal, gypsum.
- Ready to use after 7 days at room temperature.
- Non-toxic.

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Intended use:

TOA Water Bloc is used for internal waterproofing of:
- Shower recess prior to tiling.
- Washing area.
- Gutter concrete, swimming pool.
- Terrace.

Technical Data

  • Color: White
  • Density at 25ºC: 1.20 – 1.22 kg/l
  • Usage rate: approx. 1.0 kg./ sq.meter at thickness 300 - 350 micron (dry film, 2 coats)
  • Solid Content : 61.5 – 63.5 %
  • pH at 25 oC : 9.00 – 10.0
  • Viscosity at 25 oC : 115 – 120 KU
  • Elongation (ASTM D 412): ≈ 1,000 %
  • Volatile Organic Compound (ISO 11890-2): < 1.1 g/l

Construction methods

  • Application tools: Brush, roller
  • After use: Clean the tools with clean water immediately after application.

Construction Guide

Surface preparation:

  • Surface must be clean and dry. Remove all mildew, laitance, mould, oil, grease from release agent, dust, dirt and previous coatings which are poorly adhered.
  • In case of mold and algae, brush and clean with TOA 113 Microkill then leave it dry for 24 hours before coating with TOA Water Bloc.
  • Deformed paint or coating must be thoroughly cleaned before application.
  • Fill all cracks wider than 1 mm. with TOA 302 Acrylic Sealant and allow drying.

Application:

  • Stir well before use.
  • Mix TOA Water Bloc with clean water in the ratio of 3:1 and apply as the primary coat, leave it to dry for approximately 3 – 4 hours.
  • Apply a first coat of TOA Water Bloc (No need to add water) then leave it dry for 24 hours approximately.
  • - Apply a second coat of TOA Water Bloc (No need to add water) then leave it dry for 24 hours approximately.

Recommended:

  • The surface must be dried prior to apply.
  • TOA Water Bloc should not be applied to new concrete less than 28 days old and other cementitious surfaces less than 7 days old.
  • Don't use this product while raining.
  • The crack must be sealed before the primary coat. Reinforce with TOA Fiber mesh while wet before coating with TOA Water Bloc 1 - 2 coats.
  • Suitable for interior, in case of exterior should have tile, screed, render or paint to cover TOA Water Bloc.
  • For bath rooms, swimming pool can be tiled after the second coat 7 days.
  • Clean all tools immediately after use with water.

Recommended paint system

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