Your garden shed is not just a storage space: it's an investment in protecting your valuable items. Among its components, the roof stands out as crucial. A well-maintained roof shields your shed's contents from the elements, making its upkeep a top priority for any DIY enthusiast. Here are some essential tips to ensure your shed remains a sturdy and reliable storage space.

Regular inspection

Make it a habit to inspect your shed roof regularly, especially after extreme weather. Look for signs of damage such as cracks, leaks or sagging areas. Catching problems early can prevent them from escalating into more significant issues.

inspect your shed roof regular

Trim overhanging branches

Overhanging branches can scrape against the roof and deposit leaves and other debris, which can trap moisture and cause rot. Trim back any branches that hang over the shed to prevent damage to the roof and minimise the accumulation of debris.

Keep it clean

Maintaining your roof includes keeping mould and mildew in check, as they can damage the colour pigmentation and resin coating of bituminous sheets, such as our ONDULINE CLASSIC range, leading to degradation of the sheet structure. Luckily, preventing this is straightforward: just ensure the roof surface stays clean by using a mild detergent and rinsing it off with a hose. Avoid high-pressure jet washers, as they can harm the roofing sheets.

If mould problems persist, improving ventilation in your building can help. Our ONDUTISS AIR membranes can assist with this by providing both high and low levels of ventilation and promoting healthy airflow to reduce any potential mould issues.

keep your shed roof clean

Unsightly moss

To rid your roof of unsightly moss, it's important to understand its nature. While moss is a charming part of nature, it can wreak havoc on your roofing. This humble plant thrives on moisture, especially in shady areas like gutters and north-facing roofs. Regular brushing is the key to preventing moss growth and maintaining the pristine appearance of your roof. We recommend a coarse bristle brush rather than a pressure washer for effective moss removal without damaging your roof.

Seal leaks

Even minor leaks can lead to significant water damage over time. Inspect the roof for signs of leaks, such as water stains or damp spots on the ceiling. Seal any cracks or gaps with roofing caulk to prevent water from seeping into the shed.

seal any leaks you find on your shed roof


Condensation can be a persistent issue for garden shed roofs, even with high-quality roofing solutions. When warm, moist air from inside the shed meets the cooler surface of the roof, it can condense into water droplets, leading to a range of problems. Over time, this moisture can promote the growth of mould and mildew, which not only damages the structural integrity of the shed but also poses health risks. ONDUTISS AIR can be used to prevent this problem.

Additionally, the constant presence of moisture can accelerate the deterioration of the roofing materials, potentially leading to leaks and water damage. Proper ventilation and insulation are crucial for mitigating condensation issues and ensuring the longevity of your garden shed roof.

Remove snow and ice

In colder months, snow and ice build-up on the roof can add weight and strain to the structure. Use a roof rake to safely remove excess snow, taking care not to damage the roof surface. Clearing snow and ice promptly can prevent structural damage and minimise the risk of leaks.

By following these garden shed roof maintenance tips, you can ensure that your shed remains sturdy, reliable, and well-protected against the elements. With regular inspections and preventive measures, you can prolong the lifespan of your shed roof and enjoy worry-free storage for years to come.

remove snow and ice from your shed roof to prevent damage

Onduline roof sheets come with a minimum 10-year waterproofing guarantee, underscoring their exceptional quality. This guarantee serves as a testament to their durability, longevity, and steadfast waterproofing capabilities.

Don’t forget our range of lightweight and easy-to-install roofing solutions can be purchased via B&Q and Wickes.

You can also check out our full list of stockists here.