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Roof insulation is important because up to 20% of a house's heat loss occurs through the roof. But don't worry, with the right roof insulation you can have peace of mind for up to 100 years. Insulation expert Arnold Drewer explains which insulation options are particularly efficient for pitched roofs, which are particularly common in Germany. And after watching this video, you won't make the biggest mistake that around 30 percent of homeowners make. How do you properly insulate a concrete or wooden ceiling? And why is insulation up to 48 centimeters thick often used in other European countries? I'll also tell you how insulating your roof or the top floor ceiling can not only reduce your heating costs, but also improve your living comfort. With Arnold Drewer's professional tips, you'll also learn how to insulate your roof from the inside or outside and what you need to take into account. Would you like to find out why flexible insulation materials outperform panel insulation materials and how external shading can improve your summer heat protection? Content: 0:00 Intro 1:01 Flat or pitched roof 1:36 The biggest mistake 3:10 Insulating the top floor 7:22 Insulating sloping roofs 9:28 Above-rafter insulation 11:32 Under-rafter insulation 13: 45 Heat protection #proper insulation #roof insulation #renovation #arnolddrewer #insulation #roof