PENTENS T-308 Crystalline Admixture Waterproofing

PENTENS T-308 is added to batches of concrete during the mixing process for new construction projects. The high-growth organic component of the product reacts with water and unhydrated particles in concrete to form millions of needle-like crystals. These crystals grow and migrate through the concrete to fill in hair-thin pores and microscopic voids up to 0.4mm that would otherwise serve as passages for harmful moisture.


It works as a dual purpose waterproofing
system; it creates hydrophobic materials
instantly and initiates crystal formation in a
long run

  • It provides significant cost saving because it eliminates labour cost for the application process
  • Integral protection for the ENTIRE concrete
  • Permanent protection even if the surface is damaged
  • Protection from any direction
  • Time-Saving
  • Cures internally
  • Heals cracks by crystal formation


  • Basement floors and retaining walls
  • Concrete flat roof
  • Water retaining/excluding structures
  • Lift Pits
  • Swimming pool



Instruction for Use
Trial mix shall be conducted for concrete intended toutilize PENTENS T-308, to waterproof a particular concrete structure.

For project site, mix PENTENS T-308 with water to form very thin slurry (e.g.: 25 kg of powder mixed with 31.5 liters of water). Pour the required amount of material into the drum of the ready-mix truck. The aggregate, cement and water should be batched and mixed in the plant in accordance with standard practices (taking into account the quantity of water that has already been placed in the ready mixed truck).
Mix for at least 5 minutes to ensure even distribution of the PENTENS T-308 throughout the concrete.
Note: It is important to obtain a homogeneous mixture of PENTENS T-308 with the concrete.
Therefore, do not add dry PENTENS T-308 powder directly to wet concrete as this may cause clumping and thorough dispersion will not occur.


Impervious gloves and barrier cream should be used when handling these products.
Eye protection should be worn. In case of contact with eyes, wash thoroughly with plenty of water and seek medical advice if symptoms persist.
If contact with skin occurs, it must be removed before curing takes place.
Wash off with an industrial skin clearer followed by plenty of soap and water. Do not use solvent.
Ensure adequate ventilation when using these products.