The kindergarten is situated in residential district of town Valga which is in southern Estonia next to the Latvian border.

The building was reconstructed from a soviet-time energy-wasting (280 kWh/m²a ) panel house into a modern energy-efficient construction. It is the very first refurbishment with passivehouse components in Estonia and as a pilot project it has become a good learning material for innovative architects.

The building has solar collectors on the roof which provide energy for hot water system and room heating. For inner decoration natural material were used.

 

Gallery

Net floor area: 1232,8 m²
Energy reference area: 1156,5 m²
Enclosed volume : 5773,8 m3
Completion date: 2009

Building type: kindergarden / silicate brick construction

U-values:

Exterior wall:                                    0,10 W/m²K                        Windows :                  

Exterior wall (below ground):       0,21 W/m²K                        - Glazing:                                                    0,51 W/m²K

Roof:                                                 0,07 W/m²K                        - Frame Rehau (regular):                        0,74 W/m²K

Floor Slab:                                       0,12 W/m²K                        - Frame Rehau (fixed):                             0,73 W/m²K

Hatch to the attic:                           1,00 W/m²K

Ventilation:

Measured air-tightness (n50)                   0,41 h-1

Rtek lumier passiv 3000 ventilation system with heat recovery:

 - declared heat recovery efficiency         71% (PHI method)

 

Heating installation:

District heating combined with solar thermal collectors.

Construction costs: 1269 Euro/m²

Altogether 1,5 million Euros

Building owner: City of Valga

Architect/Planer: K & M projektibüroo