Thanks for the response! I’ll continue a bit more.
Kerabit Kattoelementit Oy (Revenue 6.1 M / 2023)

Q1/2024
“In Finland, the sales development of Kerabit Kattoelementit was positive.”
https://nwsuomi.fi/osavuosikatsaus-q1-tammi-maaliskuu-2024/
In the background is indeed Nordic Waterproofing, which in 2021 acquired the wooden element operations of SeiKat Oy and the Ylistaro factory. https://www.sttinfo.fi/tiedote/69903226/nordic-waterproofing-on-allekirjoittanut-sopimuksen-suomalaisen-puuelementtitoimittajan-seikat-oyn-hankinnasta?publisherId=59650213.
Nordic Waterproofing is part of the Nordic Waterproofing Group, which is one of Europe’s leading suppliers of waterproofing products and services for buildings and infrastructure. Nordic Waterproofing Group operates in the market with its well-known brands, including Kerabit.
Other roof element suppliers also include:
- Sievi-Element (house factory, which is part of the Sievi Group construction group)
- Oiva Wood Solutions (house factory, part of the Puumerkki Group, which is owned by the international investment company Mimir Invest AB.)