The highest quality German
damp-proofing products
available in the UK

External Rain Protection

When building materials are in contact with water, they absorb an amount of water depending on the porosity of the material. Water is one of the main causes of structural damage such as cracks, frost damage, algae growth and salt efflorescence.

  • To prevent rain penetration use Heyen Facade Inpregnation which is an invisible absorbent agent for all mineral substrates which is resistant to persistant driving rain and as a dirt repellant yet leaving the breathability of the building un-affected.
  • Heyen Masonry Cream is suitable for use on brick, stone and concrete walls. Reducing the porosity of masonry also reduces heat transfer thus improving the thermal efficiency of a building.