DANISH EXPERIENCE OF INSULATION MULTISTORY DWELLING HOUSES

Riga Technical University, 2010-12-03

Where do you spend most energy?

What people think: Real:

Source: Emnid survey “zukunft haus 2003” for Deutsche Energie-Agenturhttp://www.zukunft-haus.info/page/index.php?id=1519

Energy efficiency of buildings - important

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It is possible with existing and proven technology to have buildings with a fraction of the present average consumption!

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Averageconsumption in

buildings

Best presentbuilding code

Passive Houses

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Sources: EU Commission, DK buillding regulationsand www.passivhaus.de

Who improves energy demands the most in new buildings?

20%

25%

30%

30%

25-30%

Spain

Norway 2)

UK

Denmark

Sweden 1)

Hungary

Residential: 20% Non-residential: 27%

1) Only electrically heated buildings2) As of August 20093) Residential. Non-residential not yet finalized

0%

15%

20%

20%

20%

0% 10% 20% 30%

Germany

France

Netherlands 3)

Italy

Spain

Development in energy-performance requirements in Denmark

Source: Implementation of the EPBD in Denmarkwww.buildup.eu/system/files/EPBD_DK_p2381.pdf

Solutions of external wall insulation

”Flex System” ”Facadesystem”

Ventilated external wall insulation

Insulated buildings

Rockwool products for ventilated external wall insulation

In Latvia we offer:•slabs Multirock 35 (50 – 200 mm thickness)•slabs Venti Max (80 – 200 mm thickness)

Rendered external wall insulation

Insulated buildings

Rockwool products for rendered external wall insulation

In Latvia we offer:•slabs Fasrock Max (80 – 200 mm thickness)•slabs Frontrock Max E (80– 200 mm thickness)

Project: ”Golfen i Kolding”

Multistory passive house

� 40 apartments

� 3 blocks of 4 storeys

� East-west main facades orientation

Details of building

� Large windows

� Architectural freedom

� Energy consumption for heating: 12 kWh/m2/year

Optimal insulation thicknesses

U-values:Walls 0,11 W/m2 K (350 mm) Floors 0,10 W/m2 K (270 mm)Roofs 0,08 / 0,10 W/m2 K (450 mm / 360 mm)

The energy performance certificate should be issued almost for every building� more info : www.epbd.lv

Energy Performance of Building Directive (EPBD)

� Reduce buildings heating energy� Make the Passive House our

standard choice (mandatory in new UK buildings from 2013)

� Always make building renovations energy efficient

Key recommendations

� Make public buildings energy efficient role models

� Strengthen energy saving requirements in buildings

� Promote savings and provide up-front financing

Lets create the better future!