![Bandebitu_EG1C4472_MODIF-2_small](https://novlek.com/wp-content/uploads/2020/02/Bandebitu_EG1C4472_MODIF-2_small.jpg)
Bituminous strip
The NÖVLEK® bituminous strip protects the upper surface and sides of the joist from water. Because it is waterproof, water runs off and is discharged easily.
Ventilation Shims
NÖVLEK® ventilation shims ensure perfect ventilation of the underside of the boards, and prevent water retention at the contact point between board and joist.
![07062019-_RA_5301-4](https://novlek.com/wp-content/uploads/2021/02/07062019-_RA_5301-4.jpg)
![CI_07062019-_RA_5291-3](https://novlek.com/wp-content/uploads/2021/02/CI_07062019-_RA_5291-3.jpg)
Isolation Shims
The NÖVLEK® isolation shims isolate the timber joists from the ground and ensure they always stay dry. The use of NÖVLEK® isolation shims prevents the risk of degradation and premature rotting of joists.