Description
IB VL 09 Bat Entrance Stone | Façade integration & Cavity access
The IB VL 09 bat entrance stone is a sustainable access stone for bats in façades. The stone can be mortared into the façade and provides via a slot of 2 cm high and 15 cm wide access to the cavity wall or other built‑in provisions. The sloping bottom surface of the slot facilitates entry for bats.
The entrance stone is fully manufactured from houtbeton, a natural and sustainable material without chemical additives. The rough surface provides bats optimal grip when entering the cavity or built-in box.
Key features
- Bat entrance stone for façades
- Slot of 2 x 15 cm with sloping bottom surface
- Fully made of sustainable wood concrete
- Natural material, no chemical additives
- Rough surface for good grip of bats
- Ideal for access to cavity wall or built-in boxes
Suitable for various bat species
The IB VL 09 is used by various bat species, depending on location and season:
Spring and summer roosting place
- Common pipistrelle (Pipistrellus pipistrellus)
- Nathusius' pipistrelle (Pipistrellus nathusii)
- Small dwarf bat (Pipistrellus pygmaeus)
- Late flyer (Eptesicus serotinus)
- Greater mouse-eared bat (Myotis dasycneme)
- Common long-eared bat (Plecotus auritus)
Winter roost (severe frost)
- Can function as shallow road crawl stone in internal walls of underground winter roosts for:
- Daubenton's bat (Myotis daubentonii)
- Natterer's bat (Myotis nattereri)
- Greater mouse-eared bat (Myotis dasycneme)
- Whiskered Bat (Myotis mystacinus)
- Common long-eared bat (Plecotus auritus)
Application of the entrance stone
The IB VL 09 functions solely as access to cavity or built-in provisions.
- Suitable for all standard bat boxes
- Can be combined with IB VL 05, 15, 33, 34
- Easy to install in façades or cavity walls
















