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build Lw

Integral Waterproofing Compound for Concrete

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Dubond’s Hydrobuild LW is specially formulated integral liquid waterproofing compound composed of surface active plasticising agents, polymers & additives. It is used as an additive for cement concrete, mortar & plasters. It makes concrete cohesive and prevents segregation. Hydrobuild LW is an integral waterproofing admixture for concrete and mortar which chemically converts the water soluble compounds present into concrete/mortar into stable water insoluble compounds. It is used in all types of concrete/mortar requiring water impermeability. It is based on high performance polymers. Conforms to IS 2645 : 2003 and IS 9103 – 2000 standards.

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Areas of Application

Waterproofing of concrete and sand-cement mortars used in :


Roof Slabs and Screeds

Water Tanks & Water Retaining Structures

External Plastering

Bathrooms and Balconies

Sunk and Drains

Features & Benefits

Increases Work Ability

Easier Placing

Better Compaction and Finishing by Acting as Viscosity Modifier

Higher Cohesion

Breaks the Salinity of Water by Converting Them Into Salt Crystals

Lower Water Requirement for Given Work ability

Chloride Free

Increases Extra Bonding Strength

Reduce Risk of Segregation and Bleeding

Reduce Risk of Shrinkage Cracks Due to Heat of Hydration

Reduce Risk of Honey Combing

Corrosion Resistant - Reduces the Risk of Rusting of Reinforcement by Breaking the Chain of Rust Electrons - Makes Concrete More Cohesive, Hence Protects Steel Better Against Corrosion

Method of Application

Charge Cement & Aggregates to Concrete Mixer as Per the Mix Design, Mix in Dry State for 12 Minutes

Start Addition of 75–80% Mixing Water & Mix for 2-3 Minutes

Hydrobuild Lw Is Added as Per the Recommended Dosage Into the Remaining Mixing / Gauging Water

Then Add to Concrete Mixer & Mix for Another 2 Minutes

Place the Concrete or Apply Plaster, as Needed

Cure the Applied Mortar or Concrete as Per Good Construction Practices

Technical Information

Properties Specification  Result
Appearance Free flowing liquid
Colour Wine red
Specific gravity @ 25˚C 1.05 ± 0.02
Non volatile content 13 ± 0.05%
pH value 11 – 13
Setting time, minutes Initial-100; Final-185
Chloride Content IS : 2645 : 1975 >0.0003
Water Permeability IS : 2645 : 1975 >60 % of the control
Compressive Strength N /mm² IS : 2645 : 1975 As per the standard
Dosage IS : 2645 : 1975 200 ml per 50 kg bag of cement

Other Information


  • Do not add Hydrobuild LW directly to dry cement & aggregate mix. Maintain water-cement ratio as low as possible
  • Do not increase the dosage of Hydrobuild LW than the recommendation


200 ml, 1ltr, 5 ltr & 20 ltr container


Shelf life is 12 months from the date of manufacturing in unopened conditions. Store in a cool & dry place


Use rubber hand gloves & safety goggles, while using Hydrobuild LW. In case of contact with skin, wash with plenty of water. Keep out of reach of children

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