Shed Felt
(5 Products)Shed felt is a waterproof roofing membrane designed specifically for outbuildings like sheds, summerhouses, playhouses, and log stores. Lightweight, flexible, and simple to apply, it provides a reliable barrier against the elements, keeping stored tools, equipment, and furniture dry year-round.
What Is Shed Felt?
Shed felt is a bitumen-saturated roofing membrane, typically reinforced with a base of glass fibre or polyester. It’s designed to form a waterproof layer over pitched, timber-framed roofs on smaller outdoor structures. Unlike torch-on systems, shed felt is applied cold, using clout nails or adhesive, making it ideal for DIY use.
The surface is usually finished in mineral granules, which add a degree of UV protection while giving the roof a coarse, textured appearance. Common colours include green, black, and charcoal grey.
Applications
Shed felt is suitable for a wide range of non-habitable garden structures, including:
- Timber sheds and potting sheds
- Garden offices and summerhouses
- Bike and bin stores
- Log stores and lean-tos
- Animal shelters and chicken coops
- Playhouses and outdoor workshops
It's also commonly used in school gardens, allotments, and parks - anywhere a simple, durable roofing solution is needed.
Benefits
- Weatherproof Barrier: Protects sheds and garden buildings from rain, wind, and damp
- UV-Resistant Finish: Mineral surface helps resist sun damage and surface cracking
- Cost-Effective Solution: Ideal for budget-conscious projects without compromising protection
- Quick & Easy to Install: Perfect for DIYers; no specialist tools or heat required
- Low Maintenance: Requires minimal upkeep once installed
- Lightweight & Flexible: Easy to handle, cut, and apply
- Available in Multiple Colours: Choose from green, black, or grey mineral finishes to suit your garden
- Suitable for Most Garden Roofs: Ideal for timber sheds, summerhouses, log stores, and more
- Wide Range of Sizes: Roll lengths and widths to fit various roof spans
Installation
The process typically includes the following steps:
- Cutting the felt to size.
- Laying it over the roof with an overlap at the edges.
- Securing with galvanised clout nails or adhesive.
- Finishing with timber felt battens along edges and ridges for a secure, wind-resistant finish.
We recommend fitting in dry weather and avoiding overly stretched felt, which can lead to splitting or bubbling over time.
Frequently Asked Shed Felt Questions
Do I Need Underlay for Shed Felt?
Not usually. Most shed roofing projects involve just a single layer of mineral-finished felt, especially for smaller buildings. For extra durability, some people install a base layer beneath the top sheet but it’s not essential for typical garden sheds.
Can You Lay Shed Felt Over Old Felt?
Yes, but only if the existing felt is in good condition: dry, flat, and free from major damage. However, for best results and longevity, it’s usually recommended to strip off old felt and start with a clean, dry deck.
Does Shed Felt Need Adhesive?
Not always. Many shed felts are installed using clout nails alone, especially on pitched roofs. However, using felt adhesive on overlaps, ridges, or eaves can improve wind resistance and water tightness, particularly in exposed areas.
What Colour Shed Felt Should I Choose?
Colour is largely cosmetic, though green mineral felt is most popular for garden settings due to its natural look. Black and charcoal grey offer a more modern appearance and are often chosen to match darker paint or timber finishes.
What’s the Difference Between Mineral Felt and Sanded Felt?
- Mineral Felt: Finished with coarse granules for UV protection and improved durability; used as a top layer and provides a finished appearance.
- Sanded Felt: A lower-grade option, smoother in texture; typically used as an underlay, not a standalone weatherproofing layer.
What Time of Year Should I Fit Shed Felt?
Spring and summer are best, when the weather is dry and mild. Avoid installing during rain, frost, or extreme cold, as this can affect adhesion, bonding, and the overall integrity of the installation.
How Do I Join Two Pieces of Shed Felt?
Overlap by at least 50mm, ensuring the upper layer sits over the lower to allow rainwater to flow off. Use roofing adhesive on the overlap or nail securely, then press down firmly to bond the joint. Consider using a roller for a smooth finish.
