Ridge

Definition

The ridge is the top edge or corner formed by the intersection of two roof surfaces. It is also the board against which the tips of rafters are fastened.

Purpose

The purpose of the ridge is to provide a structural and visual apex to the roof, ensuring that the roof planes meet securely and form a watertight seal. It also supports the rafters, providing stability to the roof structure.

Examples of Use

• In gable roof construction, the ridge forms the peak where the two sloping sides of the roof meet.
• For hip roofs, the ridge is the horizontal line where multiple roof planes intersect.
• The ridge board serves as the central anchor for rafters in residential and commercial roofing.

Related Terms

• Rafters: Sloped structural members used to support the roof deck and its loads.
• Ridge Board: A horizontal board at the peak of a roof where rafters meet.
• Hip Roof: A type of roof where all sides slope downwards to the walls.

Notes

Proper construction and sealing of the ridge are essential to prevent leaks and ensure the structural integrity of the roof.