PU 55 ( U V Resistant Urethane Waterproof Coating)


CHEMISTIK PU – 55 has been specially developed from latest aliphatic PU Technology which is eco friendly to provide protection from water and corrosion  with long term durability.  It is  available in 1k component coating ideally suited for concrete waterproofing and metal structure of new and remedial work which is  directly exposed to atmosphere and U V Rays.  It is suitable to use as a top coat on PU and other elastic waterproof materials.


Suitable for all types of new and maintenance works.  Highly recommended for waterproofing of concrete such as all types of roofs, flat or sloping or domes, etc. which are directly exposed to sun.   It is recommended to use as a top protective coat on elastic type waterproof materials which cannot be exposed to UV.  Also recommended for all types of metal structures in heavy Industries like Chemicals, Steel, Power Waterworks. It can be safely used for potable ms water pipelines internal and external surfaces.


No primer required unless otherwise recommended for areas which cannot be prepared.  Mix thoroughly before use.  CHEMISTIK PU – 55 can be applied by brush or roller squeege blade or airless spray equipment.  Apply first coat on prepared surface.  Apply second coat within 6 – 8 hours at right angle to the first coat.  Inter coating interval should not be more than 10 – 12 hours. Finishing PU – 55 should simultaneously be applied to all openings, protrusions, outlets, parapet walls, copings, gutter valleys and expansions joints, forming a good seamless watertight finish.  Treated surface should be allowed to cure for minimum 96 hours at ambient temperatures of 30°C cooler temperatures the cure time will increase accordingly.


Do not leave unused material or it will be rendered useless. Work in well ventilated areas and do not smoke during application. Keep away open flames, lights, etc.  Do not work when humidity is very high and temperatures should not be less than 5°C and more than 45°C.  Avoid working during afternoons when temperatures are maximum.  Do not apply during inclement weather or when rain appears imminent.  Coverage may vary from surface to surface, it is advisable to carry out a test sample.  Do not mix any solvents in the product.


Store in cool dry place away from direct sunlight and high humidity.  Shelf  life  12 months in original containers subject to storage conditions.


20 Kgs. Pack

  • Non yellowing coating can be exposed
  • Good for horizontal or vertical surfaces
  • Very strong bond with concrete/metals/elastic/material
  • Will not crack or peel
  • Seamless Coating
  • Can be used as an anti corrosive coating on metal structures
  • Easy to use 1k component
  • Can withstand temperature variations
  • White Colour reflects heat
  • Selected Colours available on request

Clean all foreign matter such as dirt, dust, grease, laitance rust milscale, mortar dropping, loose and flaking materials.  Algae and fungus must be removed using suitable fungicide solution or bleach or dilute HCL solution, thereafter wash and rinse thoroughly.  Necessary repairs to defects must be carried out prior to coating like crazed, unstable or hollow surfaces, major cracks, any protrusions, outlets, construction joints, etc. For cracks and joints, use our CHEMISTIK PU 25 Sealant.  All surfaces to be treated must be properly prepared, sound clean, dry and fully cured and ready.  New concrete to be cured thoroughly for 28 days prior to coating.  For coating on metals, please consult our engineers for preparation of surface and suitable primer to be applied.  As a Top Coat please ensure the treated surface is free from loose particles, dust, rust  and fully cured.


It is recommended to use protective gear whilst working like gloves, goggles, etc.  All tools equipments etc. to clean with solvent like  Xylene, Toulene, etc.

PU 55