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Each year, the United Kingdom sees approximately 1,600-2,200 millimetres of rainfall. Although precipitation varies in certain areas, it’s important that as a property owner in the UK, you prepare for the unexpected with roof flashings. This form of weatherproofing is made with a weather resistant barrier (WRB) system, which stops water from entering the structure and causing long-term damage. It can be exposed or concealed, and can be constructed with a number of different materials. Not sure where to start? Decide what flashing you require by learning about its purpose, use and construction.

Types of Flashing

The amount of flashing you get installed on your property will depend on its size and shape. Some properties may only require sill flashing under the windows and doors, whereas others will need to be fitted with roof flashings to swerve water away from the seams and joints. If the run-off on the roof is relatively concentrated, this is a good option. Other types of flashing include wall flashing, which can be applied or embedded, and roof penetration flashings, which waterproof cables, supports and pipes.

Choosing the Metal

Ideally, all kinds of roof flashings should be constructed with long-lasting, weather-resistant, malleable materials. Metal is often cheap to replace, can be rolled to a specific size and if the correct metal type is selected, it will stand the test of time. Copper is a preferred choice, because of its workability and solderability. Extremely resistant, it can be formed into simple and complex roof shapes. Aside from metal, some flexible flashing products are constructed with acrylic, butyl rubber and rubber asphalt. It’s important to consider the expansion and contraction of materials, as well as how they react to particular chemicals when making a decision.

Environmental Impact

The type of flashing and material you select will affect its environmental impact. However, when properly installed by a professional in the metalwork industry, its durability could last for 500 years or more. Bulk use of heavy metals, such as lead, tend to cause environmental concern, however, lead fittings and roof flashings are readily available around the United Kingdom. If you follow eco-friendly practises, opt for flashings crafted with soft zinc, which can be recycled indefinitely and with ease.

All properties around the United Kingdom require roof flashings to make them weatherproof. A company that operates within the UK and offers these services, among many others, is Sams Fabrications. For information about the full range of metalwork services on offer, call: 01603 405040.