Can insulated walls breathe?
Does external wall insulation increase algae formation?
Does a house need to be airtight?
Is an old house sufficiently insulated?
Does insulation increase the risk of fire?
Does the production of insulation materials consume more energy than is ultimately saved?
Are energy retrofits cost-effective?
Does replacing windows with triple glazing cause mould to grow?
Do windows that are sealed too tightly prevent the renewal of air and increase the risk of mould forming?