Finishes & materials · Glossary
Mansard roof
A mansard roof is a four-sided hip-style roof with two slopes on each side — a steep lower slope (often near vertical) and a shallow upper slope. Mansard roofs maximize usable attic floor area within a given building footprint and are common in Second Empire-style residential architecture.
Why this matters for renovation projects
Mansard roof shows up on permits, contracts, or estimates that Renology covers across LA, San Diego, San Francisco, Seattle, Portland, and Denver. Most homeowners encounter the term once a project is already mid-flight, when there is no time to learn its mechanics without slowing the contractor. Knowing what it means before signing the contract is the difference between a clean project and an avoidable surprise. For how Renology calibrates cost ranges against permit valuations and contractor invoices, see the methodology.