With the exception of English-style buildings, all constructions are based on the age-old blockhouse system.

- 30mm thick box beam in thermally modified fir (greying wood)

- 25mm thick box beam dried fir,

  protected against fungi and insects using the 'vacuum-pressure-vacuum' method (injection)

- 45mm thick box beam dried fit,

  protected against fungi and insects using the 'vacuum-pressure-vacuum' method (injection)