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Isotex BP

Bitumen Waterproof Coating

isotexa BP is an emulsified bitumen protective coating, with excellent adhesion which dries to a tough black seamless vapor-proof membrane. Suitable for tropical and hot climatic conditions, it is a single component, VOC-compliant, maintains it elasticity, suitable for applications to horizontal, vertical and inclined surfaces.


  • Single component, cold applied and ready to use
  • Joint less membrane when it cures
  • Eco friendly
  • Excellent Adhesion to most building substrates
  • Compatible with all bituminous Water based products
  • Good resistance against chloride
  • Damp proofing of most substrates.
  • Protective coating on concrete foundations
  • Curing compound on freshly cast concrete
  • Vapor proof barrier coating for interior & exterior floors & walls.

Application Details

The temperature for application of coating is 2°C to 48°C. Isotexa BP can be applied with roller, brush or airless spray. It is recommended that one or two coats should be applied depending on the degree of protection required.

Technical Specification

Properties Data Value
Chemical Base Bitumen emulsion
Color Black
Density (at 23° C) ~ 1.00 kg/Lt
Solid Content Approximately 28 % by weight
Flash Point Non Flammable
Application Temp 2-48 deg C
Surface Dry (Hrs) 4 hours depending upon temperature and humidity
Complete dry 24 hours
Confirms to ASTM D 2939, BS 8102


Surface Preparation

The substrate must be clean, dry and free of all contamination such as dirt, oil, grease, coatings etc which hinder an adhesion. The substrate must be sound and of sufficient strength. There should not be any standing water and should be a cured surface.

Substrate Preparation / Priming

It is recommended to use a prime coat to ensure proper bonding of subsequent coat. The prime coat can be prepared at the site by diluting isoTexa BPCoat with 20% water and applying this diluted coat as the primer. The primer penetrates concrete surfaces, fill pores, hairline cracks etc and produces an excellent surface for adhesion of isoTexa BP Coat. Further coats shall be applied only after the primer coat dries off completely.

Application Method

  • Stir the contents of the drum thoroughly before application to remove all sediments.
  • Each coat must be applied at right angles to the previous one to obtain proper coverage and uniformity. Be certain to examine each section carefully to ensure you’ve covered every minute crack and hole.
  • Subsequent coats shall be applied only after the previous coat dries off completely
  • The coating shall be protected from the ongoing site activities and during backfilling from getting damaged by a 150 micron polyethylene sheet.


  • 4m2/Lt/coat gives a thickness of 125 microns for moisture vapor barrier
  • Store away from sunlight, UV and other sources of light
  • Shelf life is 12 months if stored as per recommendation
  • Avoid contact with eyes and prolonged contact with skin.
  • For eyes flush immediately with water for 15 minutes and call a physician.
  • Protective clothing such as gloves and goggles should be worn when handling the product.
  • Keep containers tightly closed when not in use.

Conditions of Use and Disclaimer The information contained in this Material Data Sheet is given in good faith based upon our current knowledge and does not imply warranty, expressed or implied. The information is provided and the product is sold on the basis that the product is used for its intended purpose and is used in a proper workmanlike manner in accordance with the instructions of the Product Data Sheet in suitable and safe working conditions. Under no circumstances will the Company be liable for loss, consequential or otherwise, arising from the use of the product.