Terminology
Roof Measurement Glossary
Plain-language definitions used throughout Roof Report 360 reports and educational content.
- Aerial imagery
- Photographs captured from above a property by aircraft, satellite, or another supported capture method.
- Eave
- The lower roof edge that commonly extends beyond an exterior wall.
- ESX
- A sketch file format used with Xactimate-compatible workflows to transfer roof geometry.
- Facet
- One flat or consistently sloped plane of a roof.
- Hip
- The external line where two sloped roof facets meet.
- Pitch
- The roof slope expressed as vertical rise over horizontal run, such as 6/12.
- Rake
- The sloped edge of a roof at a gable end.
- Ridge
- The upper horizontal line where two sloped roof facets meet.
- Roof square
- A roofing unit equal to 100 square feet of roof surface area.
- Valley
- The internal line where two roof facets meet and direct water downward.
- Waste factor
- An additional material allowance based on roof geometry, material, installation pattern, and applicable estimating guidance.
- XML
- A structured text format used to exchange data between compatible systems.