Zinc Roofing – Technical Information
Zinc Roofing is long lasting, being naturally resistant to corrosion, it protects itself by developing a patina that gives it an exceptionally long lifespan. With an average corrosion rate of 1mm/year, even very thin (0.7 mm) rolled zinc can achieve 50 to 100 years life depending on the environment. In addition to its long lifespan, zinc roofing is a low maintenance material. It doesn’t have a coating or varnish that wears out over time or needs to be reapplied. In fact, a zinc roof continues to develop a protective layer (patina) throughout its life. It can come in a variety of colours.
Zinc Roofing is malleable enough to meet virtually every architectural demand and therefore provides solutions that less flexible materials fail to achieve. Of course it is always good to remember that the more finite design you factor into your design the higher the cost will be to achieve it!
Being non-toxic, durable, recyclable and plentiful material Zinc Roofing is one of the most green materials you can choose. As an essential trace element, zinc is also vital to biological equilibrium and growth. Zinc roofing used in the building industry is 100% recyclable, putting it far ahead of many other materials which are just taking their first steps in recycling. Less energy is required to produce zinc than the other principal metals.
An example of Zinc Dormers can be seen in our site at ‘Charlie Luxtons ‘Building the Dream‘ project (photo above), where we created a unique design using a standing seam ‘T’ capping. For a more traditional type of Zinc Dormer please look at our project Zinc Dormers on a Tiled Roof.
If you are planning a home extension with zinc roofing and are thinking of incorporating lanterns then an example of these can be seen at our project displaying a zinc roofing on a rear extension with skylights to be put in place and this roofing is designed using the popular standing seam method with a capping cover at the hip. This particular roof also had multiple changes of pitches and is an example of how Zinc Roofing can solve this problem.
An example a Zinc Roofing with multiple Velux windows can be seen at our project entitled VMZinc Anthra – Zinc Roofing Extension with Velux Windows. This was also created using the standing seam method, which is by far the most popular method as it creates visually appealing fine lines and has a proven track record in long lasting protection against the elements. This example also displays a Zinc parapet box gutter and parapet capping.
Another standing seam zinc roof can be seen at our project entitledDark Grey Zinc Roofing for Hospital Plant Room which also displays the hips being covered with the Zinc Heritage Batten Capping System with roll hips, the roofing also displays a shallow hip roof design, which falls in three different directions. You could create the whole roof with this capping system but nowadays, because of the finer alloys in Zinc today, the standing seam method is used as it is far more malleable for creating superior modern design, allowing the capping system to be used at the hips.