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Flashing

Last updated on Monday, July 29, 2024.

Definition:

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Flashing in masonry refers to a thin, waterproof material, typically made of metal, that is installed at joints and intersections in a building's exterior to prevent water seepage and damage. It is crucial for directing water away from vulnerable areas of the structure, such as windows, doors, and roof intersections, to maintain the integrity and longevity of the masonry work.

The Concept of Flashing in Masonry

Flashing in masonry is a vital component that plays a crucial role in preventing water intrusion and moisture damage in buildings. It is a thin, impervious material that is installed to prevent the passage of water into a structure from a joint or as part of a weather-resistant barrier system.

Importance of Flashing

Water damage can be a significant concern for masonry structures, as moisture infiltration can lead to a host of issues such as mold growth, structural deterioration, and decreased indoor air quality. Flashing provides a protective barrier that helps to redirect water away from vulnerable areas, such as wall openings, transitions, and intersections, safeguarding the integrity of the building.

Types of Flashing Materials

There are various types of materials used for flashing in masonry construction, including:

Sheet metal (aluminum, copper, stainless steel)
Plastic (PVC, vinyl)
Rubberized asphalt
Bituminous membranes

Installation of Flashing

Proper installation of flashing is essential for its effectiveness. Flashing should be installed at critical junctures, such as roof-wall intersections, window sills, door thresholds, and parapets. It should be integrated with other building components to ensure a continuous barrier against water infiltration.

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