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Independent durability testing by Saunologia’s Lassi Liikkanen shows ceramic sauna stones lasting up to four times longer than natural alternatives. His data directly contradicts the ceramic-stone bans printed in heater manuals from Harvia and IKI.

Tulikivi’s Q1 2026 interim report disclosed UL certification tests on the Kevo heater collection for US launch and confirmed the Russia exit that clears a conditional Saunologia editorial partnership. The dual move reveals a coordinated credibility play across the Atlantic.

After World Sauna Forum 2026 in Jyväskylä, Saunologia is running a half-day Helsinki workshop for designers, builders, operators, and consultants who need Finnish sauna principles they can apply to real projects.

In a recent webinar, Lassi Liikkanen of Saunologia.fi broke down the essential design principles of Finnish sauna construction and the most common mistakes he sees in projects outside Finland. High benches, proper heater sizing, and ventilation are where most builds go wrong.