Water Repellent

Clear, super hydrophobic protection for building surfaces, particularly absorbent roof tiles.

A one-coat super-hydrophobic advanced clear coating for all mineral building surfaces such as clay, concrete, terracotta, natural stone, slate, fibre cement, etc. 10 year manufacturers guarantee.

Key Features

  • For use on mineral surfaces such as concrete, clay, slate and terracotta
  • Manufactured in Germany
  • Developed utilising the very latest superior technology
  • Super hydrophobic
  • Highly breathable system
  • One-coat clear protection
  • Creates a self-cleaning surface
  • Extends the life-span of all mineral building surfaces, including roof tiles
  • Proven performance – independently tested

Proven Performance

ProPERLA Water Repellent is weather resistant in accordance VOB – meaning the products can withstand all climatic conditions

ProPERLA Water Repellent is manufactured in accordance with DIN 4108 – European rating for water repellency

ProPERLA Water Repellent has been tested and certified in accordance with EN1504-2 : 2005, confirming depth of penetration, water absorption, resistance to alkali, drying rate and thermal conductivity

Super Hydrophobic

Water cannot stick to the coated surface but forms droplets that run off the surface.


Water and moisture are able to escape the masonry due to the high breathability rating of the products.


Masonry remains clean and attractive as dirt is unable to take hold.

Insulation Barrier

Reduces water absorption by more than 93%. Dry walls mean less heat loss.

Keep the property clean and attractive

The superior technology mimics the ‘lotus-leaf’, repelling dirt and water to give a super hydrophobic effect, making walls/roof tiles self-cleaning.

  • Dirt particles are unable to obtain a hold on ProPERLA treated surfaces and will simply flow off with rainfall.
  • Helps to prevent discolouration and salt efflorescence
  • Makes it difficult for the growth of moss, algae or lichens
  • Slows the ageing or breakdown of the surface of the building or its tiles

The masonry and tiles remain clean and attractive, even where they are exposed to extreme weather conditions including shade, high air humidity or sea salt penetrated air. ProPERLA Water Repellent is completely unaffected by UV rays.

Super Hydrophobic

A surface is considered super hydrophobic if a water droplet beads up (with a contact angle greater than 150 o and the droplets can slide aware from the surface readily (it has a small contact angle hysteresis). Super hydrophobic surfaces repel water, causing it to form beads because it is more attracted to itself than the surface. This means water will run off the surface making it extremely difficult to wet.

This is known as the ‘lotus effect’ due to its similarity to the lotus leaf but is also seen on duck feathers and butterfly wings.

Mineral surfaces like roof tiles which have been coated with ProPERLA Water Repellent will respond in the same way – water will form droplets and won’t penetrate the substrate.


There is no restriction on the ability of the building or roof of the property to allow air and moisture to escape and breathe out. ProPERLA Water Repellent benefits from an SD (breathability rating) of 0.03. A coating is considered to be breathable if it has an SD value of 0.50.

A breathing roof will improve its insulation properties. Just a 5% content of damp in building materials can lower the thermal resistance by up to 50%.



All ProPERLA coating products benefit from a manufacturer's performance guarantee of between 10-20 years, and are also covered by our unique 5-year service agreement.


Get in Touch Today

Book an appointment with us today and we will arrange a FREE consultation in the comfort of your own home, and we can answer any of your questions you may have about your project and discuss what we can do for you.

OR CALL US FREE ON 0800 0029847