As you dive into the world of roof flashings, you will see that you've got many options available. And each can align well with unique projects and provide top protection for your roof.
In our article today, our roofing experts at Roof Stuff share the different types of metal flashings for roofs. Learn their features in this guide.
What is Flashing for a Roof?
Flashing on roofs is a material that has a small thickness - and it's able to protect roof edges efficiently. The main purpose it serves is to ensure water is guided away from the joints that meet in the same section on the roof.
For instance, where a roof plane reaches a vertical surface or wall, flashing materials can make a significant difference, directing water away from the roof. And their specific uses are ideal in the following scenarios:
- Where shingles butt up against chimneys
- Alongside intersecting areas such as vents
- Upon masonry walls that meet the surface of a roof
Now, vertical surface flashings offer a watertight seal. They serve the essential purpose of mitigating water penetration and damage to the roof or property, safeguarding the structure underneath them.
4 Types of Roof Flashing Solutions
Roof flashing materials come in different types and different flashing material options exist. Some examples of different roof flashing types that are long-lasting and durable include:
- Pole plate flashings - They are installed along the base of a pole, serving the purpose of mitigating water seepage. The seal they provide eliminates the potential rot that can come from water damage without them. And they'll also ensure debris does not enter through any gaps.
- Apron flashing - This flashing is easy to install along the joint between a wall and a roof or a chimney and a roof. It is another type of flashing that eliminates leaks through the roof.
- Box gutter flashing - These are flashing solutions for roofing systems that you can install around square or rectangular gutter features. Each solution directs water away from box gutters efficiently and takes the form of custom flashings.
- Valley flashing - They are installed at the joint between two roofs and are so named because they make a valley that can facilitate effective water drainage. They can thus eliminate the accumulation of water on the roof.
3 Main Types of Metal Flashings for Roofs
In terms of metal roof flashings, you'll also find a large range. The different metal roof flashing options are:
- Metal roof flashings made of aluminium: This type of flashing material is rust-resistant. It can last up to 20 years and is the most common type of metal flashing for roofs.
- Metal roof flashings made of galvanised steel: They are made of steel materials that have a coating of zinc. And this defends the structure against corrosion. It's durable and has a lifespan of between 15 and 20 years.
- Metal roofing flashings made of copper: This is a unique flashing material that enhances its longevity and resistance to corrosion. For instance, this type of flashing can last upward of 35 years - it's able to last against the elements with its robust weather resistance.
The Benefits of Metal Flashings on Roof Joints
Metal flashings on roof joints are beneficial in many ways. Not only are they essential in eliminating water infiltration, but they offer other advantages. Our roofing experts explore those benefits below.
Aesthetically Appealing
Metal flashing solutions such as copper offer an elegance and aesthetic appeal that can easily align with your home. So, besides their robustness and longevity, they can enhance the timeless look of your property.
For instance, you may choose copper flashings to install on a black-tiled roof, and this will naturally and pleasantly contrast with the elegant look of the copper flashings, creating an appealing enhancement in aesthetics.
Low Maintenance
Flashings made of metal do not require a lot of maintenance. You'll not need to hire a professional to paint them frequently or constantly make repairs.
In their robustness and corrosion-resistant features, they offer the benefit of being hassle-free, since they'll not become weathered or rust over time.
Good Longevity
Metal flashings, when used alongside roof sheeting, can safeguard your home for a long period, and this is due to their excellent longevity. For instance galvanised steel flashings feature incredibly strong coatings such as zinc, and this means they do not corrode.
Their materials are highly sturdy and they can easily deflect harsh elements such as ice or hail, which enhances their lifespan.
Non-Combustible
These non-combustible flashings are resistant to flames. And this feature means your property will have an extra layer of protection, keeping the spread of flames to a minimum within the roof area.
Installing Metal Roof Flashing: Tools & Tips
Installing metal flashing correctly prevents water damage. Check these tools and tips for successful installation.
Tools for Metal Roof Flashing Installation
The tools you will need include:
- Metal roof flashing - Choose the metal roof flashings that work for your property and its structure.
- Roofing cement and roofing nails - Opt for roofing cement and nails to fix the flashing in place.
- A hammer or nailer - A hammer or nailer is ideal for installing the roofing nails securely.
- Measuring tape - Select a measuring tape to get the take and record the correct dimensions.
- Tin snips - Tin snips are ideal for cutting the metal roof flashing.
Tips for Metal Roof Flashing Installation
The steps you will need to follow for metal roof flashing installation are below:
- Clean the roof's surface by getting rid of debris. Remove any old flashings and then ensure that the roof remains clean and dry for a successful attachment.
- Take measurements of the section of the roof where you want to install metal flashings. Cut the flashing according to the measurements with tin snips.
- Position and align the metal roof flashing correctly and check that it fully covers the required areas. For example, the flashing needs to cover at least four inches of the vertical surface. Each seam should also overlap by two inches.
- With roofing nailers and nails, affix the flashing to the roof. Hammer each nail without excessive force into the top part of the metal flashing and at least 12 inches apart.
- Complete the sealing process with roofing cement. Sealant is also an option, which serves the purpose of reinforcing the fit and eliminating water seepage.
Install Flashing Easily with Roof Stuff
Roofstuff is a go-to destination for a full selection of flashing solutions, and we are available to you. With the most renowned solutions for flashing installation and incomparable brands such as Wakaflex and Smartform, we offer exactly what you need for your project.
For a long-lasting and superior metal roof flashing performance, and to ensure water damage is completely eliminated, find the high-grade materials you need here. Choose flashing solutions from Roofstuff and visit Evobuild for more information on flashing for your roofing project.
FAQs
How thick is galvanized steel flashing?
They have a thickness that is commonly 0.55 millimetres. Yet galvanized flashing can be slightly thicker in their form, and some can be 0.60 millimetres. The thickest options tend to be 1.2 millimetres thick, which can protect the roof well and prevent water or debris from entering.
What's the best metal for flashing?
This can depend on the project you are completing, but galvanized steel flashing is one ideal choice for a few reasons. It'll resist corrosion because of its reinforced coating. It is also aesthetically pleasing and malleable, so installation processes are easy to complete.
Does roof flashing need to be sealed?
Yes. This process is quite important when installing roof flashing. Without sealing it, you risk a few issues - water seepage can happen, for example, and this can cause significant damage to the structure of your home or building. Seal the flashing with roofing cement for the best results.
How to reseal metal roof flashing?
It starts with roofing cement. You can apply the cement and afterwards use a pressing motion along the seam to push it down. If needed, screws can contribute to a greater seal. But you can also apply cement all around the edges to seal the flashing more securely.
How long does it take to replace flashing on a roof?
It tends to take between one and three hours, but will depend on your expertise. Spotting that the flashing needs replacing can often be the step that takes the most time. And replacing the flashing around skylights or chimneys can also take some time.