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Koster KBE Liquid Film - Liquid Bitumen Waterproofing Membrane

Verified by manufacturer 1 month ago

Delta Membrane Systems Ltd

A highly elastic, solvent-free sealing compound with a rubber/ bitumen basis.

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Application

Suitable for:

  • Foundation waterproofing,
  • Intermediate waterproofing on horizontal areas such as terraces, balconies, wet and moist rooms (under screeds),
  • For priming and for sealing the seams and edges of KÖSTER KSK waterproofing membranes in above and below ground construction, and garages.
  • Ideal for application over plaster or concrete, flush jointed masonry or KÖSTER NB 1 Grey.

Description

Liquid Film is a highly elastic, solvent-free sealing compound with a rubber / bitumen basis.


Features and benefits:

  • Packaging: (DMS 251) 6 kg bucket or (DMS 203) 24 kg bucket.
  • Store the material in a frost-free place. In originally sealed containers it can be stored for a minimum of 12 months.


Consumption:

  • 1–2.5 kg/m² as primer approx. 250 g/m².
  • Consumption varies depending on absorbency of the substrate.
  • For waterproofing approx. 0.5–1 kg per coat.
  • For seam sealing approx. 1.0 kg / (consult manufacturer details for min layer thickness).

General information

Color

Black

Material

Guidance for specification option:

Rubber/bitumen liquid membrane.

Uniclass

Pr_35_31_68_09 Bitumen emulsion waterproof coatingsPrimary

CAWS

J30/10 Cold-applied damp-proofing

J30/130 Cold-applied damp-proofing

J30/110 Cold-applied tanking

Specification data - Bitumen emulsion waterproof coatings

Colour

Black.

Substrate preparation

-

Manufacturer guidance

  • Substrate can be dry or slightly moist but not wet.
  • It has to be free of frost, grease, tar and oil, loose particles, and any bond-inhibiting material.
  • Protrusions must be minimized.
  • Edges must be broken, (chamfered to approx. 45 degrees). Internal corners and wall/floor junctions must be rounded out with fillets.
  • The material can be applied on concrete, plaster, masonry, and bitumen roofing membranes.

Application method

-

Manufacturer guidance

General:

  • Stir well before application.
  • Clean tools immediately after use with water.
  • Clean off dry material with KÖSTER Universal cleaner.


Elastic waterproofing of areas in ground contact:

  • Voids, open joints, etc. have to be closed prior to application using, for example, KÖSTER Repair Mortar.
  • In wall/floor junctions, on construction joints and especially in areas at risk of cracking, KÖSTER Superfleece or KÖSTER Glass Fiber Mesh has to be embedded into the fresh first layer.
  • Prior to backfilling, the coating has to be protected against mechanical damage, for example with KÖSTER Protection and Drainage Sheet 3-400.
  • The installation of a suitable drainage system is also recommended.
  • Suitable for waterproofing floor areas against rising damp.
  • Expose coating to stresses such as movement, water etc., only after the waterproofing layer has completely dried.
  • On horizontal areas, two layers of PE-foil are placed as a gliding layer on top of the cured waterproofing layer before screed is installed.


Balconies and terraces:


  • KÖSTER KBE Liquid Film is especially suited for waterproofing balconies and terraces.
  • Waterproofing drains, around downspouts and gutter connections can be applied in one seamless application without complicated detailing work.
  • KÖSTER Superfleece or KÖSTER Glass Fiber Mesh is embedded into the fresh first layer of KÖSTER KBE Liquid Film over the entire area as well as at all connections.
  • In cases of extreme joint movement or at wall / floor junctions, KÖSTER BD Flex Tape K 120 is embedded.
  • On top of the fully dried coating, two layers of 0.4 mm PE-foil are placed as a gliding layer, followed with a reinforced screed layer thickness of 3 cm min. thickness.


Application of KÖSTER KSK membranes:


  • KÖSTER KBE Liquid Film can be used undiluted as primer for KÖSTER cold self-adhesive membranes.
  • The primer coat should cover the substrate completely.
  • KÖSTER KBE Liquid Film is also used to seal the ends of the KÖSTER KSK membranes.


Area waterproofing:


  • KÖSTER KBE can be used undiluted in a thin layer as a primer.
  • It is applied with a brush, roller or suitable spray equipment in one coat.
  • After the primer has dried, the waterproofing coats are applied.
  • KÖSTER KBE Liquid Film can be applied with a roller, brush, trowel, paint brush or with suitable spraying equipment.
  • Each coat must completely dry before the next coat can be applied.
  • For area waterproofing, apply at least 2, preferably 3 coats.
  • Embed KÖSTER Superfleece or KÖSTER Glass Fiber Mesh into the first fresh coat on the whole area.
  • Fresh coatings can be protected from rain by applying KÖSTER BE Rainproof.
  • Proper drying of the coating can only be warranted if the temperature during application and drying is above + 5 °C.
  • KÖSTER KBE Liquid Film can be covered with other materials after 24 hours.

Performance:

-

Manufacturer guidance

  • Solids content: > 60 % by weight.
  • pH-value: 11.0.
  • Elongation at break: > 900 %.
  • Retraction: > 60 %.
  • Viscosity: ca. 8000 mPa*s.
  • Application temperature: + 5 °C to + 35 °C.
  • μ-value: approx. 13000.
  • sd-value: approx. 26 m (at 2 mm dry layer thickness).

Sustainability data

Contains Red List materials

No

Recyclability

No

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

0 %

Literature

KÖSTER The Green Pages of Construction Chemicals

KÖSTER The Green Pages of Construction Chemicals