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Cemairin Block R15
Water-based, integral water repellent and efflorescence control admixture (Formerly known as Hyperplast Block R15)
  • Reduces capillary water absorption.
  • Minimizes the risk of efflorescence and dirt pick-up.
  • Provides a better color intensity and uniformity.
  • Reduces the growth of algae and fungi on concrete surfaces.
  • Increasing the physical properties such as compressive, flexural and tensile strength.
  • Improves the colour shades and thus reduces the needed pigment dosages.
  • Highly alkaline resistant.
  • Provides a better demolding and sharper edges.
  • Reduces chloride intrusion.

Cemairin Block R15 is a water-based, ready to use multi-purpose integral concrete waterproofing admixture specially formulated to improve the durability of concrete block, pipe, roofing tiles, concrete brick and pavers.


Cemairin Block R15 provides excellent water repellency to concrete systems such as:

  • Concrete paving stones and tiles.
  • Concrete roofing tiles.
  • Precast concrete elements.
  • Architectural building blocks and bricks.

Cemairin Block R15 is available in 5 gal (19 litre) containers as well as 275 gal (1,041 litre) and 330 gal (1,249 litre) IBC totes. Bulk supply in tanker trucks is also available upon request.


Use Cemairin Block R15 at a dosage of 7.5 to 23 fl oz/100 Ib (500 - 1500 ml/100 kg) from cementitious material.

Cemairin Block R15 should be added after adding the final needed amount of water to the system. And allow for 2 minutes mixing time.

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Cemairin Block R15
Cemairin Block R15