The Kupa equipment are mainly made from FSC-certified naturally formed Robinia hardwood with durability class 1. This is used in tree trunk form in frames, in ladder rungs and in plank form in the roofs.
The structural constructions such as floors and side panels are made of Douglas heartwood from trees with the same durability class as Siberian larch.
The plywood is a standard birch plywood with a phenolic coating for outdoor use (colored brown in the drawings and photos). The Danish spruce is used for decorative purposes.
All fasteners are made of stainless steel. Connections where bolts are countersunk are provided with a cover cap. The nets and ropes of the Kupa equipment are made of Ø16mm polypropylene with a steel core.
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Contact details
- IJslander B.V.
- Oude Dijk 10
- 8096 RK Oldebroek