Beat has inherited a detached house that is more than 50 years old and wants to insulate the attic. Our energy expert Max answers his questions.
Homeowners must pay tax on the imputed rental value as income. If you plan renovations sensibly, you can optimise your tax burden.
A solar system is worthwhile for the environment. Whether it pays off depends on at least six factors. We explain all the important factors.
Is there a draught coming through your windows? Do you feel an unpleasant cold in your house? Then it's high time to replace the window seals...
Windows are subject to heavy mechanical stress and are permanently exposed to environmental influences, which is why it is enormously important to pro
