Prof. Dr. Heinrich Wigger presented the guideline for the subsequent insulation of private and public buildings during the NordHaus Messe 2011 in Oldenburg. He had lectures on Saturday 19th and Sunday 20th of March in front of interested private investors, architects, construction engineers, energy consultants and representatives from public organisations. His lectures have been part of the 2 days programme to inform about sustainable construction of private and public buildings accompanying the fair in Oldenburg. With his lectures he attracted the audience so much, that a large number of the guideline for the subsequent insulation was distributed to the interested visitors.