Some Facts Worth Knowing About Sheet Metal Roof Flashing Materials
Water is one of a building’s worst enemies. And perhaps the most water-battered part of any building is the roof. Whenever the wet season comes, your roof is your primary defence against rain and the other harsh elements that come with the seemingly continuous deluge of water from the sky. Aside from the roofing sheets, your roof also relies on other accessories for protection from the damaging effects of water. One of these important fittings is roof flashing. Roof flashings are thin pieces of material installed over seams and joints to thwart the passage of water and direct it either off the building or to a waterproof area. These flashings are usually installed on the chimney, the vent, along the edges of the roofs and walls, and on roof peaks and valleys. They can be installed either under or over the roofing material. The most common kinds of sheet metal flashing materials, on the other hand, are Colorbond, copper, lead, stainless steel, and galvanised steel. Sheet metal flashings are usually installed in most roofs since they are durable, low in maintenance requirements, weather-resistant and compatible with most types of adjacent materials. The following are some facts worth knowing about the most popular types of sheet metal flashing materials: COLORBOND® steel is a highly versatile and tough material suitable for many roof flashing applications including box gutters. They are ideal for use in chimney, valley, step and base flashing. Preformed aluminium flashings can speed up installation and guarantees effective results. Copper. This is one of the most durable yet expensive roof flashing materials. Typical applications include chimney, valley flashing on tile, wood shake, slate roofs, base, and counter flashing. Constructing and installing copper flashing is a learned skill and was once reserved for experienced craftsmen only. Stainless steel. Stainless steel is one of the most popular materials chosen for roof flashing. They are highly durable and minimally affected by harsh environmental corrosives such as acid rain or salt spray. They can be used in most roof flashing applications. Galvanised steel. This type of flashing material is considered exceedingly economical. It is made by coating sheet steel with a layer of zinc alloy, through hot dipping or electroplating. It is one of the most affordable types of roof flashing material. Lead. Lead is one of the oldest materials used in roof flashings. It is hard-wearing and malleable, making it a favourite choice for use in cap flashings, in compound intersections, and with roofing materials that have complex profiles such as clay and concrete tiles. Lead roof flashings can also withstand harsh salt sprays and acid rains. Your final choice for your roof flashing material will depend on many important factors. Your roofing contractor and supplier can provide you the best advice when it comes to selecting the best type to install on your roof.