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News & Advice

What Is A Mansard On A Roof?

What Is A Mansard On A Roof

Mansard Roof

  • A mansard roof has two slopes on each of its four sides. The lower slopes are steep while the upper part is nearly flat. Dormer windows often punctuate the lower slopes.
  • Attic dormers are used in various architectural styles and provide additional living or storage space within a building’s upper levels.
  • Mansard roofs, commonly used in 19th-century Europe and the US, still feature historic buildings today and remain popular in modern architecture for preserving or creating unique designs.

Features of a Mansard Roof

  1. Double Slopes – A roof that has two slopes on each of its sides. The lower slope is steeper, while the upper slope is shallower or nearly flat.
  2. Dormer Windows – Mansard roofs often have dormer windows, which provide extra space or light in the attic.
  3. Decorative Elements – Mansard roofs are often adorned with decorative features, such as ornate trim, brackets, and moldings, especially along the roofline and around dormer windows.
  4. French Origin – The mansard roof style has French origins and was popularized during the 17th century by the French architect François Mansart, after whom the style is named.




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