Moving ice is always a problem. For example, in river areas, where ice sheets move in masses, ice is a risk factor and therefore floating houses are not built in streaming ice districts. However, ice that freezes in place and does not move does not affect the floating structure.
Pontoon structure in houses is the same than in concrete pontoons which have been built world-wide, also in arctic conditions. The first house, Villa Tähti, has been tested in Keilaniemi at Espoo, Finland since 2003 and new test house / showroom Villa Helmi was built next to it in 2007 and the pontoon structure has remained working well ever since. Water will not freeze under the pontoons where EPS (expanded polystyrene) works as a heat insulation.