Surface hydrophobisation materials keep walls dry, clean and save money. The protection against driving rain, keep facades dry and avoid ugly green coating and the adhesion of dust and dirt. Dry isolation material require less heating to keep warm. Efflorescence and frost damages are in the past. With HydroBloc SI impregnations, the choice is to be made between water based or solvent based liquid hydrophobisations or a creamy material with excellent penetration skills.