When looking at roof repairs or replacing your existing structure with a new one, there are many different elements that come together to ensure your roofing is as watertight and sturdy as possible. This includes flashing, which is used to weatherproof parts of your roof. Here’s everything you need to know.

Roofing structure guides - find out what type of roof flashing you needWhat Is Roof Flashing?

Some parts of your roofing and exterior walls around the home are more prone to leaks. This is usually where two surfaces meet each other, providing a greater opportunity for water to work its way in through tiny gaps in the joints, getting into the property interiors, especially if the structure is in the path of rain running off the roof slope. This includes the base of chimney stacks, areas around dormer window extensions, roof valleys and skylight perimeters, to name a few.

While roof flashing is something you can leave to your roofing contractor, it’s always important to be aware of its importance. It may be one of the first things your roofer checks if you have leaks.

What Type of Flashing Is Needed?

Roof flashing can be manufactured from many different types of materials, depending on the needs of your roofing. It’s vital that the material is high in quality as it will need to withstand different weather conditions, keeping rainwater away from the joints. When deciding on the right type of flashing, your roofer will often recommend which one is best for your style of house.

The methods of flashing will also differ from property to property, including continuous flashing, base flashing, step flashing and valley flashing. Continuous flashing is one of the most popular techniques because it uses a single long piece of material, often chosen for the joint between vertical walls and the pitched roof slope. Your roofer will use several different flashing methods to suit each structure.

Types of Roof Flashing Material

Each roof flashing material brings its own qualities to the table. Some of the main types to consider are galvanized steel, aluminium, copper, uPVC, rubber and lead chimney flashings. Your roofer will talk you through the pros and cons of each. Factors affecting which one you choose include cost, compatibility with your roof material, colour, appearance, strength, durability, any abstract shapes required (will need to be malleable) and how resistant the material is to corrosion. However, your main aim should be to waterproof your roof for as long as possible, so many homeowners choose to invest in quality over the lowest priced material.

Do you want to waterproof your roof?

The South Thames Roofing team can talk you through your options, including roof replacement, repairs and upgrades, such as new roof flashings. We work across local South London and Surrey areas, including Fulham, Richmond and Purley. Call now on 0208 397 2900 for a free quotation.