Product Data Sheet Show all documents

Sika® Igolflex®-620

(former MSeal 620)

RUBBERIZED BITUMINOUS WATERPROOFING EMULSION

Sika® Igolflex®-620 is a dark brown, thixotropic rubberized bitumen emulsion that dries to form a tough, black, seamless, and flexible membrane. It provides damp-proofing and vapour-proofing with excellent adhesion to various substrates. Suitable for use in hot and tropical climates.

  • High rubber content
  • Cold-applied
  • Excellent adhesion to most building substrates
  • Reduces chloride penetration
  • Can be applied on damp substrates
  • Non-sag product
  • Single-component
  • Water-based formulation
  • Economical and easy to apply, reducing labour costs
  • Suitable for vertical and horizontal surfaces
  • Elastic, seamless, and joint-free
  • Low odour; dries without releasing strong vapours
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Product Data Sheet Show all documents

Usage

  • Damp-proofing: Provides an impervious membrane on concrete and brick structures.
  • Floors: Used as a sandwich membrane in new construction or as a surface treatment.
  • Walls: Suitable for both interior and exterior wall protection.
  • Roofs: Acts as a vapour barrier on roof decks and a protective coating over spray-applied insulation.
 

Advantages

  • High rubber content
  • Cold-applied
  • Excellent adhesion to most building substrates
  • Reduces chloride penetration
  • Can be applied on damp substrates
  • Non-sag product
  • Single-component
  • Water-based formulation
  • Economical and easy to apply, reducing labour costs
  • Suitable for vertical and horizontal surfaces
  • Elastic, seamless, and joint-free
  • Low odour; dries without releasing strong vapours

Packaging

200 L drums

Colour

Dark brown

Product Details

Product Information

Composition

Bitumen emulsion with added rubber latex

Shelf life

12 months minimum from production date when stored properly

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between  +5 °C and  +35 °C. Protect from direct sunlight, heat and moisture. 

Density

~1 kg/l (at 23 °C) 

Solid content

 ~50 % (Total solids by weight)

 ~10 % (Rubber content)

 

Application

Application Information

Substrate temperature

+5 °C to 55 °C

Waiting time to overcoating

~6–8 hours per coat

Note: Waiting times may vary depending on ambient and substrate conditions. 

Drying time

~3–5 days

Note: Sika® Igolflex®-620 will take longer to dry sufficiently for over-coating in low temperatures and high humidity.
Consumption

Consumption

~0.50–0.65 l/m2 per coat (Minimum 2 coats required)

Note: The figure is theoretical and intended as a guide only. It does not account for additional consumption due to surface porosity, substrate profile, level variations, or material wastage.
Application steps

SUBSTRATE PREPARATION

All surfaces must be sound, even, and free from dust, loose particles, and contaminants.

Sika® Igolflex®-620 may be applied to damp (but not waterlogged) surfaces.

On hot, dry, and porous concrete, prime the surface by diluting Sika® Igolflex®-620 with clean water at a 1:1 ratio by weight.

When used as a protective coating, fill all pinholes, cavities, and cracks with a suitable Sika® repair mortar before application.

 

APPLICATION

If a primer coat is applied, allow it to dry completely before applying subsequent coats.

Apply evenly in one direction using a brush or roller. A two-coat application is recommended to prevent pinholes in the membrane.

Allow each coat to dry fully before applying the next.

Protect freshly applied product from rain until fully cured.

CLEANING OF EQUIPMENT

Before Sika® Igolflex®-620 dries, clean tools using soapy water.
Once dried, remove residue by scraping and using appropriate cleaning solvents.

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