For example the KC1 It is used as a base plaster on brick walls, including honeycomb bricks, concrete blocks, rough concrete, expanded clay, etc. 

Instead, Kl 7 is indicated as the ideal external undercoat for mineral-based wall coverings and for the IP 10 finishing plaster available in the 1 mm grain size.

Working with a KI7 type plaster we will have greater protection from water:

• Greater durability of the plaster
• Dry masonry and therefore better thermal insulation
• Greater dimensional stability and therefore less tendency to form cracks
• Less capillary rise