When it comes to ensuring the longevity and durability of a roof, one of the most critical components that often goes unnoticed is the roof flashing. At Kytun, we offer a range of flashing and lead alternative solutions, protecting homes and buildings across the UK and Ireland.

In this blog post, we’ll dive into the world of roof flashings —what they are, why they’re essential, and how they contribute to an overall roofing system.

What is Roof Flashing?

Roof flashing is a thin material, usually made of metal, that roofers use to direct water away from critical areas of the roof where water accumulates. Some roof flashings work in conjunction with a soaker or continuous secret gutter / soaker.

The primary purpose of roof flashing is to prevent water from seeping into the structure, which can lead to leaks, mould, and structural damage. Roof flashings are typically used where an external wall above a roof becomes an internal wall below the roof. At Kytun, we have a range of flashings, soakers and lead alternatives.

Types of Roof Flashing

Where do Kytun products fit in here?

There are several types of roof flashing, each designed for specific areas and applications:

  1. Step Flashing: Used along the abutment edges of walls and chimneys where the roof intersects. This type of flashing is installed in steps, with each piece overlapping the one below it, ensuring that water flows away from the wall. Kytun provide a comprehensive range of cavity trays with integral lead flashings and bespoke apron sets for chimneys.
  2. Counter Flashing: Installed over step flashing or soaker, counter flashing is embedded into the masonry of a chimney or wall to provide an additional layer of protection against water intrusion. Where an external wall becomes an internal wall below an abutment roof, a cavity should be provided, our cavity trays are supplied with factory fitted lead flashings which provide the perfect solution for roof to wall abutments.
  3. Soakers / Continuous Soakers: Individual soakers are used between slates or plain tiles and prevent water ingress where the roof covering meets the wall. A continuous soaker (also known as Secret Gutter or Gable Abutment Soaker) is used predominately with single lap flat roof tiles and collects and drains water along the line of the sloping roof abutment and discharges it to the eaves gutter.
  4. Valley Flashing / Valley trough: Used in open pitched roof valleys where two roof slopes meet. A valley flashing / valley trough is essential for channelling water off the roof and into the eaves gutters. Kytun supply a choice of Aluminium or GRP pre-formed valley troughs for both ease and speed of installation.
  5. Re-roof application: Kytun supply a choice of roof bonding strips for use in re-roof applications in semi-detached or mews / terraced housing where there can be dissimilar roof coverings either side of a party wall.
  6. Vent Pipe Flashing / roof terminal: Specialised roof terminal or flashing for sealing around vent pipes that protrude through the roof, preventing leaks where the pipe intersects with the roof surface. Depending on the diameter of the pipe, we can offer tile terminals, slate terminals or malleable aluminium roof flashings with integrated gaskets to weather the protruding pipe.

Why is Roof Flashing Important?

A properly installed roof flashing is crucial for several reasons:

  1. Leak Prevention: Flashings acts as a barrier, directing water away from vulnerable areas and preventing leaks that can cause significant damage to your home or building.
  2. Mould and Mildew Prevention: By keeping water out, flashing helps prevent the growth of mould and mildew, which can pose health risks and compromise the structural integrity of the building.
  3. Longevity of the Roof: Flashings protect critical areas of the roof, extending its lifespan and ensuring that your investment in a quality roofing system is protected.
  4. Energy Efficiency: Preventing water ingress also helps maintain the insulation’s integrity and effectiveness, contributing to better energy efficiency and lower utility bills.

Common Materials Used for Roof Flashing

Roof flashing can be made from various materials, each offering different benefits:

  1. Aluminium: Lightweight and corrosion-resistant, aluminium flashing is a popular choice for many roofing applications.
  2. Copper: Known for its durability and aesthetic appeal, copper flashing is often used in high-end or historic buildings.
  3. Steel: Galvanised steel is strong and durable, making it a common choice for flashing in various roofing systems.
  4. Lead: Traditionally used for its malleability and weather resistance, lead flashing is still found in some older buildings and specialised applications and still widely used in new build applications.

Closing thoughts

A properly installed and maintained flashing / flashing & soaker combination will ensure that your roof remains watertight and durable, protecting your property for years to come.

If you have any questions about roof flashings, soakers, valley troughs / roof bonding strips or need expert advice on your roofing project, contact our team or call us

UK +44 (0) 1684 293702

Ire +353 74 913 9500 Or, for more information, tips, and expert advice, stay tuned to our socials and blog.