Nets and Netting Specialist J. van Dijk and Sons often works at sports clubs. We frequently assemble nets as a protection shield for walls. This is common in indoor hockey. We also mount nets on the ceiling of a room to protect the lightning from getting hit by a ball. Further, we assemble nets for indoor sports such as hockey, soccer and water polo. But for tennis nets, volleyball nets and badminton nets you are also at the right place.