Why Compatibility Is Important With Flashings

When you are having your roofing or walling repaired, replaced or inspected as part of routine maintenance, you may hear your contractor mention flashings and their compatibility with your roof or wall. 

To begin with, flashings, for example Barge Capping or Apron Flashings, pertain to the strips of metal that are formed to weatherproof the various junctions or edges of a property's roofs and walls. The purpose of installing flashings is to make the building weather-resistant — to divert water and keep it from finding its way inside the structure. In addition, the flashings also create a substantial impact on the house or building's aesthetic appearance.

As with any building material, there is a correct type of flashing that must be used for specific applications and circumstances. As previously mentioned, compatibility is a key factor that must be considered when selecting the flashings to be used for a building project.

Flashings that go with Colorbond and Zincalume steel

Hundreds of years earlier, lead was used in the manufacture of flashings because of properties that made it ideal for the purpose. It is soft and therefore malleable, which means that it could be stretched around a roof's contours to keep it watertight. 

As time passed, however, research revealed lead's toxicity and negative impact on human health and the environment. Since roofs are exposed to sunlight and rain, the toxins from the lead get washed down the building and into the soil and groundwater sources.

In Australia today, Colorbond and Zincalume are two of the top roofing and walling products for many builders and can be found in many homes and commercial structures. Their topnotch quality, versatility, and durability in the midst of Australia's extreme weather conditions have made them a popular choice for contractors in the country.

Colorbond products are made of pre-painted steel while Zincalume products are made of unpainted aluminium or zinc alloy-coated steel. For roofing and walling made with these materials, lead flashings cannot be used. Aside from the toxins they could potentially release into the environment, using lead flashings on Colorbond or Zincalume steel will result in corrosion. This occurs both when lead comes into contact with the steel and when the steel receives run off water from the lead.

The best solution would be to use flashings formed out of soft zinc, aluminium, or Colorbond and Zincalume steel sheets. Zinc-coated steel flashings may also be considered for both roofing and walling products; however, these generally come with a shorter life span, so it would make sense to avoid these for greater cost-efficiency and quality.

As for Colorbond Stainless steel, only flashings also made from stainless steel can be used.

These days, the right flashings for your home or building can be purchased in a variety of ways other than the usual visit to a physical store. You can also opt to order the flashings from trusted retailers online or over the phone. On top of getting the best quality flashings, you can also enjoy the lowest prices, and the products will be delivered shortly straight to your doorstep or site.