Nurmijärvi Municipal Building
Location: Nurmijärvi, Finland
Owner Builder: Nurmijärvi Municipality
Contractor: MM-Yritysrakentaja Oy
Designer: Architects Office Aarne von Boehm Oy
Problem / Solution
This extensive renovation project included the complete rebuilding and insulation of the roof under harsh winter conditions.
The expanded clay lightweight aggregate was lifted from the transport vehicle to the roof in a lifting box attached to a long hose. Once up, the workers filled the surface with the aggregate before adding the new roofing tiles.
Why expanded clay?
Expanded clay lightweight aggregate was decided upon its lightness and easiness to install. As opposed to concrete, expanded clay roofing tiles are lightweight but strong, have good heat insulation properties, and can withstand severe weather conditions.