Roof flashing is added to sections of a building’s roof that are vulnerable to flooding. Part of your annual roof check should include making sure that your flashing has not corroded and sits flat against applications.
This post explores almost everything you need to know about roof flashing from what it is, to how long it’ll last and why you actually need it. Keep reading to learn more about this important part of your roofing structure. If you’re here trying to find out when your roof flashing needs to be replaced, head on over to this article for more information.
What is Roof Flashing?
First things first, we need to establish what roof flashing actually is. Roof Flashing is the metal part of a building’s roof that allows water to run away from walls, chimneys and roof valleys. Directing the flow of water away from openings, cracks or gaps, minimises the risk of flooding in your house – basically, it’s a pretty important part of the whole structure.
Why do You Need Roof Flashing?
Roof flashing directs water away from any areas that have the most potential for leakage. This essential step extends the lifespan of your roof and protects your home and belongings from water damage. It can also be fitted around other parts of your house such as windows, doors and even embedded into the walls to provide extra measures against water penetration.
Common Materials Used for Roof Flashing
If you’ve got a particular project in mind, you’ll be pleased to know that metal flashing can be tailored specifically to needs and desired design.
The materials used in different types of roof flashing include:
- Aluminium: This lightweight material is easy to manipulate, extremely durable and is often cheaper than some of the more commonly used materials – plus, it’s our go-to.
- Lead: Due to its non-corrosive nature, durability and flexibility, lead is a commonly used material. However, it can be difficult to manipulate and is on the higher end when it comes to pricing.
- Copper: Incredibly durable, copper is a more expensive option for roof flashing. While it works well with other materials, oxidation causes it to discolour over time, staining surrounding materials and ultimately sacrificing the aesthetic of your roof.
- Stainless/galvanised steel: One of the more inexpensive materials is stainless or galvanised steel. While they’re cost effective, they lack the durability of those with a higher price point.
Out of them all, aluminium roof flashing is our favourite and it’s the one we highly recommend to all of our clients. Why? Read on to find out…
Aluminium Roof Flashing: How Long Does it Last and is it Sustainable?
Aluminium flashing has a predicted life span of 15-20 years, making it a pretty hassle-free option. As with anything exposed to the elements, it should be checked annually for corrosion and other damage, especially if there’s been any adverse weather conditions. Did you know, only metals that contain iron rust? Since aluminium has no iron in it, it’s naturally rust-resistant!
When it comes to choosing an option that’s kind to the environment, aluminium is your best bet. As a naturally occurring metal, it’s always available and when recycled it uses 95% less energy, saves 97% of greenhouse gas emissions and 9 tonnes of CO2 emissions.
What can Damage Roof Flashings?
Now that you’re up to speed on what roof flashing is and which materials are the best for the job, let’s dive into what could potentially damage it.
Firstly, you definitely want to be aware of any factors that might compromise the integrity of your flashing. For instance, if you have a mix of metals like copper and aluminum, there’s a risk of corrosion or etching – so be cautious about that combination!
Metals, in general, are susceptible to tarnishing when exposed to oxygen in the air. But here’s a handy tip: applying a thin layer of polish can actually help prevent that chemical reaction from taking place, keeping your flashing looking sharp.
Make sure to give your roof a once-over every year. Take note of any damage or leaks that might be caused by weather or general wear and tear. By catching those minor issues early, you can nip them in the bud before they turn into much bigger, and more expensive problems down the road. Regular maintenance could save you a whole lot of stress and cash in the long run!
Roof Flashing at Kladworx
Need a little guidance? No problem! Get in touch with us today, and we’ll help you find the perfect solution for your build. We offer tailored advice and, for those based in London or the South East, we can arrange a site survey to make sure you’re getting the right materials for the job. Let’s make your project a success!
