Product Data Sheet Show all documents

SikaTop®-588 Seal

(former MasterSeal® 588)

An elastomeric, cement based waterproof coating for concrete and masonry

SikaTop®-588 Seal is a two-component, crack-bridging, cementitious mortar, with special additives for waterproofing and protection of concrete.
Component A is a powder blend of Portland cements, selected silica sands and modifying agents. When mixed to a slurry consistency with Component B, liquid, an acrylic polymer emulsion, it can be easily applied by brush or roller. It cures to give an elastomeric flexible membrane. Suitable for use in hot and tropical climatic conditions.

  • Retains flexibility when submerged
  • Good chemical resistance against soft water, domestic waste water, manure or other liquids moderately aggressive to mineral substrates
  • Freeze-thaw resistant
  • Water vapour permeable
  • CO2 barrier
  • Quick and easy brush or roller application
Product Data Sheet Show all documents

Usage

  • Suitable for waterproofing of water-retaining structures which may be subject to movement.
  • Suitable for concrete protection from water, carbonation and deicing salts.
  • Suitable for use in terraces, balconies and wet area waterproofing where tiles are to be installed directly on top of the membrane using a proprietary tile adhesive.
  • Suitable for application on damp substrates.
  • Suitable for waterproofing of swimming pools.
 

Advantages

  • Retains flexibility when submerged
  • Good chemical resistance against soft water, domestic waste water, manure or other liquids moderately aggressive to mineral substrates
  • Freeze-thaw resistant
  • Water vapour permeable
  • CO2 barrier
  • Quick and easy brush or roller application

Packaging

Supplied in 35 kg unit:

Comp. A - Powder25 kg
Comp. B - Liquid10 kg

Colour

Available in Grey and White.

Product Details

Product Information

Composition

Blend of Portland cements, selected silica sands and modifying agents.

Shelf life

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

Storage conditions

Store in original unopened packaging in a cool and dry condition between +5 °C and +35 °C. Protect from direct sunlight, heat and moisture.Avoid excessive compaction. Do not stack pallets.

Maximum grain size

~300 µm (ASTM E 2651-10)

Density

~ 1.66 kg/l (fresh mortar at +25°C)
Technical Information

Tensile strength

Air cured 28 days~ 0.7 N/mm²
Water cured 28 days~ 0.5 N/mm²

Crack bridging ability

Static crack bridging> 1.5 mm
Dynamic crack bridging ability> 1 mm @ 20,000 cycles

Tensile adhesion strength

~0.8 N/mm2 (on concrete surface, at 28 days)

(EN 1542)

Elongation at break

Air cured 28 days~37 %
Water cured 28 days~30 %

Water absorption

~1.5 %(ASTM C642-15)

Watertightness

7 bar(DIN 1048)

Water permeability

Class W3(BS EN 1062-3:2008)

Permeability to carbon dioxide

Class C1(BS EN 1062-1)

Freeze thaw resistance

No failure(ISO DIN 4846.2 / EN 13687-1)

Application

Application Information

Layer thickness

1 mm with constant thickness for each layer, minimum 2 layers recommended

Pot Life

~ 60 min (at 25°C)

Waiting time

~360 min (at 25°C)
Consumption

Consumption

~1 L / m2 / mm per layer (min. 2 layers recommended)

An additional 0.5 kg/m² is required when embedding approved mesh.

Yield

~21 L / 35 kg unit
Application steps

SUBSTRATE PREPARATION

The surface to be coated must be clean and sound. Remove all traces of formwork, release agents, previous coatings, laitance, organic growth and any other contaminants that may affect the bond adversely. Suitable cleaning methods include ultra high-pressure water jetting, grit blasting and grinding. Aggressive percussive methods such as scabbling or scarifying are not recommended unless followed by grit blasting, wire bushing or high-pressure water jetting. After the above treatment, surfaces must be thoroughly rinsed with clean potable water to remove all dust and loose particles.

Crack bolt holes and large surface defects must be cut out and filled solid with SikaEmaco® range of repair material.

Small blowholes in the concrete should be filled with a thixotropic mix of SikaTop®-588 Seal Powder with reduced liquid content.

MIXING

SikaTop®-588 Seal is supplied in premeasured units and should be mixed on site utilising clean containers. Slowly add the powder to the liquid and mix, using a slow speed drill fitted with a suitable paddle. MIX AND USE. Do not mix more material than can be used in one hour.

Do not allow the mixed material to exceed 32°C.

APPLICATION

Apply SikaTop®-588 Seal in two coats at minimum 1 mm thickness per coat. Apply subsequent coats once the initial coat has dried.

SikaTop®-588 Seal must be reinforced with mesh across all construction joints and cracks. The reinforcing mesh may be either 100 % polypropylene or an alkali resistant glass-fibre mesh, depending on which particular enhanced tensile properties are required. Please consult your local Sika® Technical Service Representative for further advice on the correct selection of mesh.

 

CURING TREATMENT

Under hot or excessive drying conditions adequate protective shielding should be foreseen.

In cold, humid or unventilated areas it may be necessary to leave the application for a longer curing period. SikaTop®-588 Seal needs to cure under dry-air conditions. Additional heating and/or ventilation can assist proper curing. Do not use dehumidifiers during curing periods.

CLEANING OF EQUIPMENT

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

Documents