This built-in brick is ideal for bats, which species uses the built-in brick depends on the area where the built-in brick is used and which species already occur there. When using one brick per location (always in combination with the built-in brick IB VL 06), the built-in brick can be used as a shelter for one or a few specimens or as a mating place. The built-in brick is also suitable as a maternity home, but several bricks must be connected to each other to create a larger space. With bats, the more space they have available, the better! So also as a shelter. Species that use the insert are: common pipistrelle, shaggy pipistrelle, little pipistrelle, latefly and the bicolor bat.
The bat cavity brick must be used in combination with the bat installation brick (90157) for new construction or renovation. The cavity brick can be connected to the built-in brick by removing the connecting pieces. This creates a larger interior space for the bats. The insulation in the cavity can continue behind the brick, so there is no cold bridge. The built-in bricks can be used connected. To do this, you can remove the wooden part on the left, right or above. Before installing the cavity brick, first remove the relevant wooden access hatches on both the cavity brick and the 90157 built-in brick. This way the bats can crawl from one brick to the other. This actually creates a large bat box in the cavity. The built-in brick can be used in any wind direction with a preference for the southern side. Place the built-in brick as high as possible in the facade, but at least 2.5 meters. Keep the approach route to the cupboard clear, so do not allow trees or shrubs to grow in front of the wall and no sun protection or the like above the built-in brick. You can find droppings where bats live. It is therefore better not to place the built-in bricks above a door, window or balcony. The location of the built-in brick may not be brightly lit, so do not place lighting above the built-in brick.
No maintenance is possible for this built-in brick as it is incorporated in the cavity wall.