Mansard Roof Sheathing

The Mansard Roof Sheathing Calculator helps you accurately determine the number of 4ft x 8ft plywood sheets required to cover a mansard roof. It factors in the dimensions of your building, roof slopes, and waste percentage to provide precise results for the roof's upper and lower sections.


Roof Sheathing Calculator

A mansard roof, or a French roof or curb roof, is a four-sided gambrel-style hip roof characterized by two slopes on each side, with the lower slope steeper than the upper slope. This design allows maximum use of the interior space and often includes dormer windows, adding to the attic's usable space. Mansard roofs are a hallmark of French Renaissance architecture and have been popular in urban settings due to their space efficiency and aesthetic appeal.

Roof Sheathing, Mansard Roof

Building Length ft inch
Building Width ft inch
Eaves Overhang inch
Upper Roof Pitch /12
Lower Roof Pitch /12
Lower Roof Length ft inch
Waste Percentage %

Results:

Lower Roof Area ft²
Upper Roof Area ft²
Total Roof Area ft²
Estimated Plywood Needed #
Waste Factor adds #
Plywood Needed Including Waste #
Sheets needed split in upper and lower sections
Lower Slope Sheathing #
Upper Roof Sheathing #

Calculator

  1. enter the length of the building in feet and inches
  2. the width of the building in feet and inches
  3. the overhang of the eaves in inches
  4. the upper roof pitch as a ratio (e.g., 2 for a 2/12 pitch)
  5. the lower roof pitch as a ratio (e.g., 12 for a 12/12 pitch)
  6. the length of the lower roof in feet and inches
  7. a percentage of extra material to account for waste
Roof Sheathing Calculator

Results

  1. the area of the lower roof in square feet
  2. the area of the upper roof in square feet
  3. the combined area of the upper and lower roofs
  4. number of plywood sheets needed without waste
  5. additional sheets required due to waste
  6. the total number of plywood sheets needed, including waste



The calculator will display the areas of the lower and upper roofs, the total roof area, and the number of plywood sheets required. It also provides the number of sheets needed for the lower and upper roof sections, including additional sheets for waste.

This tool is ideal for construction professionals and DIY enthusiasts looking to plan their roofing projects with precision and efficiency. By understanding the intricacies of a mansard roof and using this calculator, users can ensure they have the right amount of materials, minimize waste, and optimize costs.

Roofing Materials

Estimating
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