Bitumen Roof Sheets

Bitumen sheets are one of the most popular and cost-effective roofing options for sheds, garages, workshops, garden buildings and small commercial structures. Known for their impressive durability, excellent waterproofing, and easy installation, bitumen roofing sheets offer a long-lasting, low-maintenance solution suitable for both homeowners and professional installers. Whether you're replacing an old felt roof, upgrading an outdoor building, or working on a brand-new project, bitumen sheets provide reliable performance at an affordable price point.

In this category guide, we’ll explore everything you need to know about bitumen sheets, including their key benefits, ideal uses, installation guidance, long-term performance, and how to choose the best type for your roofing needs.

Bitumen sheets—sometimes called corrugated bitumen roofing sheets—are lightweight roofing panels made from bitumen-saturated fibres. This material is renowned for its waterproofing ability, flexibility, and structural strength. The sheets come in a corrugated profile to enhance rigidity and improve water runoff, making them suitable for a wide range of roof types and pitches.

Unlike heavy roofing tiles or noisy metal sheets, bitumen sheets offer a practical balance of strength, quietness, and ease of use. Because they’re so simple to cut and handle, they’ve become a go-to roofing choice for DIYers, landscapers, carpenters, and property owners looking for fast, dependable results.

One of the biggest advantages of bitumen roofing sheets is their natural resistance to harsh weather. Bitumen is naturally waterproof, helping protect structures from rain, snow, and moisture. The sheets also perform well in windy conditions due to their flexible strength, reducing the risk of cracking or bending compared to more rigid materials.

Quality bitumen sheets often come with long guarantees—many ranging between 10 and 15 years—demonstrating their proven durability. They require very little upkeep over their lifespan, making them ideal for buildings where low maintenance is a priority, such as farm structures or out-of-the-way garden buildings.

One of the reasons bitumen sheets are so popular is how easy they are to work with. Their lightweight design means they can be carried and installed by one person, reducing labour time and cost. With the right fixings, most installations require minimal tools and experience, making them perfect for DIY roofing projects.

Unlike metal sheets, which can amplify rain and hail noise, bitumen roof panels significantly reduce impact sound. This makes them an excellent choice for garden rooms, workshops, playhouses, and garages where noise reduction enhances comfort and usability.

Bitumen sheets are compatible with roof pitches ranging from 5° to 90°, giving you greater flexibility when designing or upgrading a building. This wide pitch range ensures reliable water runoff and structural stability on flat, low-slope, or steeply pitched roofs.

Bitumen roofing is known for offering exceptional value for money. With competitive pricing, long-term durability, and very low maintenance requirements, they provide one of the most economical ways to waterproof and protect an outdoor building.

Bitumen sheets are extremely versatile and suitable for dozens of small-to-medium roofing applications. Some of the most common uses include:

Bitumen sheets are widely used for shed roofing thanks to their lightweight design, weatherproofing ability, and simple installation process. They work equally well for new builds and replacements for worn-out felt or metal roofs.

For garages or carports needing reliable weather resistance, bitumen roofing sheets are ideal. They handle heavy rainfall, fluctuating temperatures, and consistent exposure to moisture.

If you’re building or renovating a workshop or garden office, bitumen sheets offer a quieter roofing surface and improved insulation properties compared to metal roofing.

Rural structures benefit from bitumen sheets due to their durability and affordability. They can withstand harsh outdoor environments without extensive upkeep.

Bitumen sheets are safe, lightweight, and easy to modify, making them suitable even for small playhouses, storage buildings, pergolas, and lean-tos.

When choosing a roofing material, it's helpful to understand how corrugated bitumen sheets stack up against other common options:

Bitumen sheets are significantly more durable than felt and provide better long-term waterproofing. While felt is cheaper initially, bitumen sheets last far longer and require fewer repairs or replacements.

Metal sheets are strong, but they can be noisy and prone to denting. Bitumen sheets offer quieter performance, better insulation, and are often easier for non-professionals to install.

PVC sheets are lightweight but can crack or discolour over time. Bitumen provides more natural flexibility and better UV resistance, especially for long-term use.

Roof tiles are visually appealing but heavy and labour-intensive to install. Bitumen sheets offer a far more budget-friendly and quicker alternative.

When selecting bitumen roofing sheets, consider the following factors to ensure you choose the right product for your building:

Check the overall length, width, and cover length to determine how many sheets you need. Larger buildings may require a more economical sheet size, while smaller structures benefit from versatile dimensions.

Corrugation width and height impact rigidity and water runoff. A deeper profile typically means stronger overall performance, especially in heavy rain.

A sheet thickness of around 2.6 mm is ideal for most small-to-medium roofing structures. Thicker sheets provide additional strength but may be unnecessary for lightweight garden buildings.

Ensure the sheets you choose are compatible with your roof's pitch. Most bitumen sheets perform well between 5° and 90°, making them suitable for nearly all small building types.

Choose trusted brands like Coroline, Onduline, or similar manufacturers that provide guarantees of 10–15+ years.

Bitumen sheets often come in colours such as black, green, red, or brown. Choose a colour that complements your garden or building design while offering UV stability.

Installing bitumen roofing sheets is straightforward, but following best practices ensures long-lasting performance:

By following these steps, even first-time installers can achieve a clean, professional result.

DIY enthusiasts continue to choose bitumen sheets because they strike the perfect balance between simplicity, performance, and affordability. Their lightweight design means less strain during installation, and their flexibility makes them forgiving to work with, even on slightly uneven or older roof frames.

Unlike many other roofing products, bitumen sheets don’t require specialist tools or skills, which helps reduce overall project costs. Whether you’re building a new shed roof or giving an older structure a much-needed upgrade, bitumen sheets make achieving a reliable, weatherproof finish easier than ever.

Bitumen sheets are engineered for longevity. Their waterproof core helps keep moisture out, while their flexible fibre reinforcement allows them to withstand temperature changes without cracking. To maximize lifespan:

With these simple steps, bitumen roofs often exceed their expected service life, providing exceptional value for money.

Whether you're upgrading a garden shed, building a new garage roof, or constructing a workshop, bitumen roofing sheets offer the perfect blend of durability, value, and ease of installation. Browse our full range of high-quality bitumen sheets today to find the perfect solution for your project — all backed by trusted brands, long warranties, and competitive pricing.

If you'd like help choosing the right sheets or calculating how many you need, we’re here to help.