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SikaCoat®-333

Elastic and self-priming acrylic waterproofing coating

SikaCoat®-333 is an elastic, self-priming, acrylic-based liquid-applied membrane with solar-reflective properties that reduce heat absorption, helping to lower building temperatures and improve energy efficiency.

  • High UV resistance and solar reflectivity for energy efficiency
  • Eco-friendly, water-based, and non-toxic
  • Bridges micro cracks and bonds well to various substrates
  • Elastic waterproofing with superior coverage
  • Easy application by roller, brush, or spray.
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Usage

Waterproofing applications:
  • Flat and sloping fully exposed roof structures
  • New construction and refurbishment projects
  • External walls
  • Roofs with numerous details such as penetrations, drains, roof lights and complex geometry
Compatible substrates:
  • Concrete, mortar, and cementitious substrates.
  • Brick and roof tiles
  • Metal surfaces (steel, zinc, aluminum)
 

Advantages

  • High UV resistance and solar reflectivity for energy efficiency
  • Eco-friendly, water-based, and non-toxic
  • Bridges micro cracks and bonds well to various substrates
  • Elastic waterproofing with superior coverage
  • Easy application by roller, brush, or spray.

Packaging

  • 4 kg pail
  • 20 kg pail

Colour

  • White
  • Grey
  • Also available in other colours upon request. (Subject to minimum order quantity)

Product Details

Product Information

Composition

Watery emulsion using styrene-acrylic copolymers

Shelf Life

12 months from date of production

Storage Conditions

Store properly in original, unopened, undamaged sealed packaging in dry condition at temperature between +5 °C and +30 °C. Protect from direct sunlight.

Density

~1.25 kg/l

Viscosity

~29,000 cps

 
Technical Information

Tensile Strength

~2 MPa

(ASTM D412)

Elongation at break

~300 %

(ASTM D412)

Application

Application Information

Ambient Air Temperature

+5 °C min. / +35 °C max.

Substrate Temperature

+5 °C min. / +35 °C max.

Substrate Moisture Content

< 4 % pbw

Test method: Sika®-Tramex meter, CM-measurement or oven-dry-method.

No rising moisture according to ASTM (Polyethylene-sheet)

Waiting Time / Overcoating

Minimum

2–3 hours at +25 °C

Maximum

~24 hours at +25 °C

Applied Product Ready for Use

~72 hours at +25 °C
Consumption

Consumption

For wall

Primer

SikaCoat®-333 diluted with 15–20 % clean water

0.3 kg/m² (Undiluted)

First coat

SikaCoat®-333

0.35 kg/m²

Second coat

SikaCoat®-333

0.35 kg/m²

For roof

Primer

SikaCoat®-333 diluted with 15–20 % clean water

0.3 kg/m² (Undiluted)

Top coat

SikaCoat®-333

0.6 kg/m²

Second coat

SikaCoat®-333

0.6 kg/m²

The consumption above are approximates and does not include wastages. For porous substrates, the consumption may be higher.
Application steps

SUBSTRATE PREPARATION

Substrates must be free of standing water (no puddles) clean and free of all contaminants such as dirt, oil, grease, coatings, laitance, surface treat-ments and loose friable material.

All existing coating / membrane, dust, loose and friable material must be completely removed from all surfaces before application of SikaCoat®-333, and associated system products, by industrial vacuuming equipment.

The substrate must be sound and of sufficient strength. Weak concrete must be removed and surface defects such as blowholes and voids must be fully exposed.

To confirm adequate surface preparation and product adhesion, carry out a trial before full application to-gether with adhesion tests.

MIXING

Mix SikaCoat®-333 (manually or with a low-revolution mixer) until it is completely homogeneous.

APPLICATION

Dilute SikaCoat®-333 with 15–20 % of clean water. Stir gently until the mix is homogenous and a uniform colour is achieved. Using a short hair wool roller, brush or by airless spray, apply a layer of the diluted SikaCoat®-333 onto the substrate, observing that it penetrates well in all the cracks.

After the primer has dried (> 3 hours at +30 °C), apply successive layers of SikaCoat®-333 to the desired film thickness. Ensure the previous layer is completely dry before applying the next layer.

CLEANING OF TOOLS

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

 

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