The ZIP HOME construction system is certified and regularly checked by "Research and Development Institute for Wood, s.p., Prague 1."
Product Certificate no.: 2233/222/§5a/2011 you can download here.
Construction of the ZIP wall has European fire testing and certification. Fire resistance-type composition of the inside of the wall is: REI45 and from outside: REI45-ef.
The detailed description you can find in the attached file: "FIRE RESISTANCE CLASSIFICATION OF FIRES-CR-103-11-AUPS"