Hydro Build LW Chemical

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.

Green Building Rating

  • Low Emission
  • Low Ecological Impact
  • Health Care
  • Water Based

Areas of Application

  • Waterproofing of concrete and sand-cement mortars used in :
  • Basements
  • Roof slabs and Screeds
  • Water tanks & water retaining structures
  • External Plastering
  • Bathrooms and Balconies
  • Sunk and Drains

Features & Benefits

  • Increases Workability
  • Easier Placing
  • Better Compaction and Finishing by acting as Viscosity Modifier
  • Lowers cement content for increase in specified Strength, Workability & Durability
  • Higher Cohesion
  • Breaks the Salinity of Water by converting them into Salt Crystals
  • Lower water requirement for given Workability
  • 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.

Precautions & Limitations
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.

Health & Safety Precautions
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.


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

Additional Information

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

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