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close this bookMaking of Roof Flashing - Course: Timberwork techniques. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 15 p.)
View the document(introduction...)
View the document1. Purpose of Roof Flashings
View the document2. Types of Roof Flashings
View the document3. The Eaves Flashing of Couple Roofs
View the document4. The Eaves Flashing of Purlin Roofs
View the document5. Structural Design of Purlin Roof Eaves Flashings
View the document6. The Suspended Gutter

1. Purpose of Roof Flashings

Roof flashings are necessary to protect the top border of the outside walls of buildings from penetrating rain water. In the course of time, penetrated rain water would destroy the upper layers of the containing walls of buildings and render the building unusable.

If the upper layers of containing walls of buildings are soaked with moisture, this may result in efflorescence and dry rot in the brickwork.

Removal of such damage to the building is very expensive in terms of time and money. In addition to the beginning destruction of the brickwork or framework wall, moisture would penetrate into room walls. Room walls thoroughly moistened would annoy the user of the room by bad smells and damage furniture and textiles in the room. Moreover, permanent stay in such rooms with moistened walls is detrimental to the health of the room user.

But roof flashings are also important for the architectural design of the roof structure or required to make the form of the roof match the surrounding roofs.