1. Lithoplast
  2. Waterproofing of buildings
  3. Foundation insulation
  4. Moist ventilation from the interior

Moist ventilation from the interior

Wet corners, black stains on the walls or peeling painting. This is over time a picture of rooms in which humidity is kept too long.

What to avoid

A major problem is the increased occurrence of mold, bacteria, and fungi. Their spores spread through the air and harm the people living in the house. Sensitive individuals are at risk of breathing difficulties, allergies or skin disorders.

Another problem is the wetting of the perimeter walls and floors. Because of this their thermal insulation is not efficient and the residents pay more for heating. Later drainage of water from the structures is not easy at all, and construction adjustments are usually expensive.

Therefore, it is important not to wait and start to solve the humidity problem as soon as possible.

Moisture ventilation solution 

The moisture from the interior is well ventilated with studded membranes.

Place the studded membrane over the walls or insert it into the floor. A cavity is formed between the nipples and the air flowing continuously drains the vapor outside the room. If the outside air flows through the gap, we recommend adding additional thermal insulation to the interior. 

This method is suitable, for example, in historic preservation buildings. Any work changing their historical character is not allowed. However, ventilation with studded membrane is gentle, and conservationists prefer it.

Recommended ventilation composition 

Moist ventilation from the interior

  1. The basic element is a leveled foundation without protrusions, excess of mortar or concrete and sharp edges.
  2. The second layer is LITHOPLAST® INSTAL studded membrane. Place the foil and anchor with a stapler.
  3. Then use concrete screed to level the studs and form a horizontal surface for the thermal insulation.
  4. Another layer is thermal insulation with EPS polystyrene.Place the PENEFOL® 650/0.8 separating foil with a 100 mm overlap on the polystyrene.
  5. Then lay the floor.
  6. If you need to ventilate a wall, use LITHOPLAST® SANA 15/0.8 or LITHOPLAST® INSTAL 20/0.8. Anchor the foil together with the plaster supporting grid. About 12 anchors are needed for 1m2. Anchor it with the shear plates in the area between the studs. Seal the entries in the foil with SIKAFLEX polyurethane sealant. If the outside air flows through the ventilation gap, it is recommended to use a thermal insulating pre-wall. Then the plaster follows.