Aluminium Roof Flashing – 3000mm Length

Protect your roof edges and joints with our premium aluminium roof flashing. Supplied in a 3000mm length, it provides a sleek, weatherproof barrier that prevents water penetration and delivers a clean, professional finish to any roofline.

Key Features

• Manufactured from durable aluminium for long-lasting weather resistance

• 3-metre standard length for easy installation with fewer joins

• Powder-coated finish available in any RAL colour

• Lightweight and corrosion-resistant – ideal for both modern and traditional roofs

• Compatible with coping, cladding, and wall abutment details

• Fast UK-wide delivery direct from our manufacturing facility

Why Choose This Roof Flashing

Made in Britain to exact standards, our aluminium roof flashing offers reliable protection and a refined architectural look. It’s designed to divert rainwater away from roof joints and façades, helping to extend the life of your building envelope. Whether you’re working on a domestic project or a large commercial build, this flashing ensures both performance and style.

What is flashing on a roof?
Roof flashing is a thin strip of metal fitted at roof edges or joints to stop water from seeping into walls and ceilings. It acts as a watertight barrier, protecting your property from leaks and damp.

What does roof flashing do?
It channels rainwater away from vulnerable roof areas such as joints, parapet walls, and chimneys. This helps prevent structural damage and staining on exterior walls.

How does roof flashing work?
Flashing sits between the roof surface and vertical structures. When it rains, water runs over the flashing and off the roof, keeping your building dry and sealed.

How to install roof flashing against a wall?
Place the flashing tightly against the wall joint, overlapping each section to guide water away. For best results, seal all edges and fix securely using compatible fasteners.

How to fix roof flashing?
Damaged flashing can be replaced or re-secured using sealant and screws. If corrosion or cracks are visible, it’s best to replace the full section for long-term protection.

How long does roof flashing last?
High-quality aluminium flashing can last over 20 years with proper installation and maintenance. Its powder-coated finish adds extra protection against weathering.

Can you paint roof flashing?
Yes, aluminium flashing can be powder-coated or painted to match your roofline. At Online Metal Store, we offer any RAL colour finish for a seamless appearance.

How much does roof flashing cost?
The cost depends on material, size, and finish. Our aluminium roof flashings are competitively priced, offering premium quality and quick UK-wide delivery.

Should flashing be replaced with a new roof?
It’s recommended to replace flashing during roof renewal to ensure a consistent seal and longer lifespan for your new roofing system.

Where does flashing go on a roof?
Flashing is fitted along roof edges, valleys, joints, and wall connections. Any area where water might otherwise penetrate the roof structure.

High-quality aluminium roof flashing made in the Chelmsford, Essex, UK. Available in all RAL colours, 3m standard lengths, and custom sizes on request.