When homeowners think about energy efficiency, insulation and glazing usually come to mind first. Roofline insulation and energy efficiency are, in fact, closely connected, and the fascias, soffits, and ventilation at the edge of your roof play a bigger role in heat loss than most people realise. Whether you're upgrading tired timber to modern upvc fascias and soffits or reviewing your loft insulation, understanding how the roofline fits into the bigger picture helps you get