BE2 BITUMEN 2017-09-19T13:15:46+00:00

BE2  Bitumen

BE2 may be used as a waterproofing system as well as a vapour barrier compound for use in thermal insulation applications. BE2 emulsion is an aqueous dispersion of specially selected pure asphalts combined with fillers and additives to render it water and chemical resistant. The product dries to a semi-plastic film, which gradually loses its surface tackiness as it hardens. It is non-flammable when wet and so eliminates fire risk at the time of application.

Technical Data

Being of a thixotropic (buttery) consistency, it may be applied equally easily to horizontal or vertical surfaces even as a thick coating. The product has excellent adhesion to concrete, brick, asbestos cement, wood and weathered galvanised. 
1.BE2 as a Waterproofing system: Surfaces to be coated should be clean, sound and dry. Where the surface is porous, it is necessary to prime first to ensure a good key for bonding. Apply undiluted at a coating rate of 5-7 m²/ lt using a brush or roller. Apply an undiluted coat of BE2 at a rate of 2-2.5m²/lt and allow to dry.  As soon as the surface is touch dry, apply a further coat of undiluted BE2 at a coat rate of 1,5 m² / lt, whilst simultaneously laying down a suitable supporting membrane.
Apply subsequent coats of BE2 to thoroughly soak the supporting membrane, ensuring that the ultimate coating rate for the entire system is a minimum of 2,0 litres per square metre.  Care should be taken to ensure that the waterproofing is applied to areas well above the water line, and at least 20cm up parapet walls and other structures that extend through the roof.  Finally, to obtain the necessary exposure resistance, apply a coat of Acrylic Mastic at a coating rate of 2 m² /lt.
Care should be taken to ensure that the waterproofing is applied to areas well above the water line, and at least 20cm up parapet walls and other structures that extend through the roof. Finally, to obtain the necessary exposure resistance, apply a coat of  Acrylic Mastic at a coating rate of 2 m² /lt.
2. BE2 AS A Vapour Barrier System: Due to its excellent compatibility with insulating materials (it does not attack polystyrene foam) and its relatively low cost, BE2 may be used in thermal insulating work for medium-low temperature installations. Apply sufficient thin coats of BE2 to the insulating substrate to ensure a minimum dry film thickness of 1mm. Supporting fabric is generally necessary. For this purpose we recommend woven fibreglass (surface treated) or spun bonded polyester fabric.
Allow the film to dry thoroughly before applying cladding, or topcoating. Where cladding is to be applied, the surface should be allowed to dry for at least one week in warm conditions. This product, being highly filled, possesses poor vapour barrier properties, but provides an excellent key for bonding.

Number of Components 1
Base Bitumen Emulsion
Solvent Water
Viscosity Thick, buttery
Non-Volatile Content 50 ± 1% w/w
Mass Per Litre 1,0 KG
Thinners / Clean up Water while wet

Drying Time 3 – 4 hours. Hard dry : 14 days
Water Vapour Permeability 0,95 Perms at 1,2mm d.f.t.
Fire Resistance Non-flammable wet. Does not sustain flame dry
Toxicity Non toxic, suitable for drinking water installations
Colour Black

Application Temperature Limits 5ºC to 35ºC
Service Temperature Limits -30 to 60ºC
Storage Temperature 5ºC to 35ºC
Shipping Classifications Non flammable
Non-hazardous
Protect from freezing
Packaging 5 lt, 25 lt, 200 lt containers

  • Do not freeze
  • Do not apply in inclement weather
  • Allow to dry for at least 72 hours before immersion

The information contained in this technical data sheet is to the best of our knowledge correct. NO GUARANTEE IS EXPRESSED OR IMPLIED. Users must satisfy themselves as to the efficacy of the product in their application.