When is the extra cost of a mansard roof worthwhile?
A mansard roof is worth considering when the extra attic space is genuinely needed, not when the simplest and cheapest construction is the only priority. Before deciding, check how much room the chosen geometry provides after insulation is installed, how the slope break, flashings and insulation continuity are resolved, and whether the gentler upper section meets the requirements of the selected covering. It is also worth assessing the extent of details around dormers and valleys and comparing quotes that cover the same scope of work.









