Practices

Massive Passive House concept of Recticel Insulation

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The massive passive house in Bottelare is a family house built for 6 people. The building has the official passive house certificate 'Passiefhuiscertificaat' ('Passiefhuisplatform vzw') and was the launch of many other massive passive house buildings in Belgium. Now they are for example building a massive passive hotel and a massive passive sports centre.

Building envelope:

  • Pitched roof insulation: 160 mm PU insulation
  • Flat roof insulation: 200 mm PU insulation
  • Cavity wall insulation: 164 mm PU insulation
  • Ground floor insulation: 200 mm PU insulation
  • Windows: triple glazing

Renewables:

In the design of the massive passive house, 33 photovoltaic solar panels of 78 Wp and 36 photovoltaic solar panels of 81 Wp were installed.
  • 33 x 78 Wp = 2 574 Wp - in Belgium (1 000 Wp - 850 kWh/year) - 2 188 kWh/year - according to the orientation (96 % of the optimal orientation) = 2 100 kWh/year
  • 36 x 81 Wp = 2 916 Wp - in Belgium (1 000 Wp - 850 kWh/year) - 2 487 kWh/year - according to the orientation (70 % of the optimal orientation) = 1 735 kWh/year

Energy values:

  • 15 kWh/m²/year heating demand
  • 34 kWh/m²/year final energy demand (far below the required 42 kWh/m²/year instructed by the Belgian 'Passiefhuis-Platform')

Use of renewables:

No RES for hot water production / no RES for cooling

Lessons learnt

The building has the official passive house certificate 'Passiefhuiscertificaat' ('Passiefhuisplatform vzw') and was the launch of many other massive passive house buildings in Belgium.

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