Flashing is one of the key components of your roofing system. Flashing is one of the main aspects that help prevent leaks in your roof. Flashing refers to the act of installing waterproof materials in the valleys, joints, edges and any other gaps to prevent water from getting into your home. Flashing is extremely necessary to help avoid leaks.
Flashing is placed around the areas of the roofs surface where projection such as chimney or skylight intersects with the roof. If these areas are not sealed properly these areas can succumb to serious leaks. These areas expand and contract depending on temperatures and humidity levels making them even more susceptible to leaks. Flashing will allow for this movement while creating a tight seal that keeps moisture out of the roof.
Flashing can be made of many different materials including copper, aluminum, steel, lead, plastic, or composite materials. The most durable flashing materials in metal sheet flashing because it does not wear down over time when exposed to direct sunlight.
Flashing must be installed properly in order to work. Poor installation can lead to premature roof deterioration due to moisture getting into cracks. Flashing should be installed during the initial roof installation and should be compatible with the roofing material. Not all flashing materials work with all roofs. This is why it is important to choose the proper flashing material from the get go.