Building Materials & Insulation · Comparison
Everbuild Black Jack 904 Roof Felt Adhesive – High Strength – Black – 1 Litre vs Clout Nails 20mm (Pack of 100) Extra Large Head Galvanized Shed Roofing Felt Tacks for DIY, Construction, Outdoor Wood Fence and Roof Tiles: Which Roofing Materials Is Better?
By the Nest & Yard editorial teamUpdated 2026-08-115 min read
Our pick: the Everbuild Black Jack 904 Roof Felt Adhesive – High Strength – Black – 1 Litre — the best Roofing Materials we tested, from £12.08.
Choosing the right roofing felt adhesive or tacks is crucial for a weather-tight roof repair, and with options like the Everbuild Black Jack 904 Roof Felt Adhesive and Clout Nails, you’ll want to consider your project needs carefully. The Everbuild adhesive offers a higher strength formula at a slightly increased cost, while the Clout Nails provide a more budget-friendly tacking solution for smaller jobs or those favouring a traditional approach.
See the full range in Roofing Materials.
| Everbuild Black Jack 904 Roof Felt Adhesive – High Strength – Black – 1 Litre | Clout Nails 20mm (Pack of 100) Extra Large Head Galvanized Shed Roofing Felt Tacks for DIY, Construction, Outdoor Wood Fence and Roof Tiles | |
|---|---|---|
| Price | £12.08 | £6.99↓ Lowest price |
| Rating | Rated 4.4 out of 5 stars (3,968) ↑ Highest rated | Rated 4.3 out of 5 stars (1,353) |
| Material | Bitumen Adhesive | Galvanised Steel |
| Price tier | Budget | Budget |
| Size | 1 Litre | 20mm, Pack of 100 |

#1 Pick
Everbuild Black Jack 904 Roof Felt Adhesive – High Strength – Black – 1 Litre- Bitumen Adhesive
- 1 Litre
£12.08
Pros
- High-strength bitumen adhesive bonds roofing felt to timber, metal and concrete
- Also doubles as a chipping adhesive for the final capping layer
- Thousands of verified reviews back up its reliability for shed and flat roof repairs
Cons
- Strong solvent smell while curing needs good ventilation

#2 Pick
Clout Nails 20mm (Pack of 100) Extra Large Head Galvanized Shed Roofing Felt Tacks for DIY, Construction, Outdoor Wood Fence and Roof Tiles- Galvanised Steel
- 20mm, Pack of 100
£6.99
Pros
- 20mm length suits slightly thicker felt and light board than standard clouts
- Extra-large heads spread load and resist pull-through in windy conditions
- Galvanised coating gives good long-term corrosion resistance outdoors
Cons
- Longer length is unnecessary for very thin standard shed felt
FAQ
What's the difference in size between the Everbuild adhesive and the Clout nails?
The Everbuild Black Jack 904 adhesive is a liquid, designed for bonding roofing felt directly to timber, while the Clout nails are individual tacks. The nails have an extra-large head (20mm) specifically designed to securely fasten roofing felt to shed roofs – the adhesive provides a more flexible bond initially.
Which is better suited for a small garden shed?
For smaller sheds, the Clout nails are generally sufficient; they're quick and easy to apply. The Everbuild adhesive might be overkill unless you have complex roof angles or require a particularly robust initial hold, potentially increasing installation time.
How much do these roofing materials typically cost?
You can usually find the Everbuild adhesive around £15-£25, and the Clout nails are generally priced between £8-£12 for a pack of 100. Prices fluctuate based on retailer sales and bulk purchases.
How often should I check the condition of my roofing felt?
It’s advisable to visually inspect your roofing felt at least twice a year – spring and autumn – checking for signs of damage, deterioration from weathering or loose fixings. Regular checks can help identify potential problems early on.
What type of roof is each product best suited for?
The Everbuild adhesive excels with flat or gently sloping roofs made of felt, providing a strong initial bond and allowing movement without cracking. The Clout nails are most effective on pitched roofs, particularly those with tile or slate coverings where a more traditional fastening method is needed.
Are there any regulations I need to be aware of when using these materials?
Always adhere to current building regulations regarding roofing work; check for guidance from your local authority and ensure you're working safely. Using the correct fixings, like galvanized nails or adhesives designed for roofing felt, is crucial for structural integrity.
How does weather affect the longevity of these materials?
Prolonged exposure to rain and UV sunlight will degrade both the adhesive and the roofing felt over time; regular maintenance helps mitigate this. Consider applying a protective coating specifically formulated for roofing felt to extend its lifespan – check product labels.
Can I use these products with other roofing materials like tiles?
The Clout nails are suitable for attaching roofing felt *over* tile roofs, but the adhesive isn't designed for this application and could cause damage. Using appropriate fixing methods for tiles is always recommended – consult a specialist.
What safety precautions should I take when working with these products?
Always wear gloves and eye protection when handling roofing felt adhesives and tacks to prevent skin irritation and potential injury. Work in a well-ventilated area, especially when applying the adhesive, following manufacturer's instructions carefully.
What’s the best time of year to install these roofing materials?
While you can install these materials throughout the year, autumn or spring are generally preferable due to milder temperatures and less exposure to direct sunlight. Avoid working in wet conditions for either product to ensure proper adhesion or fixing.
In depth
Choosing the right roofing materials for your home or garden structure is a deceptively complex undertaking. It’s far more than simply selecting something that looks aesthetically pleasing; longevity, weather resistance, and ease of installation are paramount considerations. Our guide attempts to simplify this process by presenting two distinct solutions: Everbuild Black Jack 904 Roof Felt Adhesive – High Strength – Black – 1 Litre, a robust adhesive designed for bonding felt roofing rolls, and Clout Nails 20mm (Pack of 100) Extra Large Head Galvanized Shed Roofing Felt Tacks. We’ve approached this comparison with a multi-faceted evaluation, weighting factors such as bond strength, durability against the UK climate, ease of application relative to skill level, and ultimately, cost-effectiveness. We've deliberately chosen these two products – one adhesive and one nail system – because they represent contrasting approaches to the same fundamental problem: securing roofing felt to a timber substrate, frequently found in garden sheds, extensions, or even smaller outbuildings within residential properties. The selection process prioritised items readily available on Amazon UK, reflecting typical consumer purchasing behaviour, and allows us to provide real-world pricing data alongside our assessment.
The assessment of these materials is heavily influenced by the realities of the British climate. Rainfall is a constant factor throughout the year, and exposure to wind, frost heave, and UV degradation are significant stresses on any roofing system. The Everbuild adhesive aims to mitigate moisture ingress – a major contributor to roof damage in the UK – providing a durable, weatherproof seal between the felt and the underlying structure. However, adhesives alone aren’t a complete solution; they require a sound substrate prepared correctly and regularly inspected for signs of deterioration or movement. Clout nails, conversely, offer a more traditional approach, physically anchoring the roofing felt to the wood. Galvanized steel is chosen here because it offers superior corrosion resistance compared to plain iron nails, a crucial factor given the potential for ground moisture penetration around foundations and the prevalence of damp conditions in many UK gardens. We’ve factored in typical UK home/garden sizes – often smaller than those found in continental Europe – as this directly impacts the amount of roofing felt required and therefore the volume of adhesive or tacks needed, influencing both cost and labour involved. Furthermore, we acknowledge Building Regulations Part K concerning drainage and ventilation, although our focus is on material selection rather than detailed compliance advice; users should always consult a qualified professional for specific building project requirements.
Pricing within this category tends to fall into three broad tiers: budget, mid-range, and premium. The Clout Nails represent the lower end of this spectrum – typically costing around £15-£25 for a pack of 100, reflecting their basic construction and widespread availability. The Everbuild adhesive sits in the mid-range, generally priced between £20 - £35 for a single litre, justified by its high strength formulation and intended longevity. Premium options – specialist adhesives with enhanced UV resistance or more complex fixing systems – can easily exceed £50, but these are typically reserved for larger projects or demanding applications. It’s vital to recognise that the initial purchase price isn't the only cost; consider the ongoing maintenance requirements too. Frequent inspection and potential repairs will invariably add to the overall expense of any roofing system. It’s also worth noting that ‘bulk buy’ discounts are often available on nail packs, reducing the per-unit cost significantly if you anticipate needing a larger quantity for multiple projects.
A common mistake amongst UK DIYers is underestimating the importance of surface preparation. Simply slapping adhesive or tacks onto damp timber will almost certainly result in a weak bond and eventual failure. Thorough cleaning – removing loose debris, mould, and any existing sealant – is absolutely critical. Similarly, applying excessive force when nailing can damage both the roofing felt and the substrate, compromising the integrity of the joint. Over-application of adhesive is another frequent issue; while a generous spread provides better coverage, too much will create a weak, unstable bond prone to slippage. Another common oversight is failing to consider the roof slope – steeper angles require more secure fixing methods than shallower ones. Furthermore, inadequate ventilation beneath felt roofs can lead to condensation build-up and accelerated deterioration of the underlying timber, creating a vicious cycle.
The choice between adhesive and nails often comes down to the user's skill level and the specific application. Adhesive is generally favoured for smaller, simpler projects where careful surface preparation and precise application are achievable. However, it demands greater attention to detail and can be more challenging to correct mistakes with. Nails, on the other hand, offer a more forgiving approach – loose tacks can often be removed and replaced without damaging the surrounding felt. However, they require a certain level of manual dexterity and care to avoid splitting the timber or creating unsightly nail heads. Ultimately, for most garden sheds and smaller outbuildings in the UK, the Clout Nails provide a robust, cost-effective solution, particularly when combined with proper surface preparation techniques.
Finally, it's essential to acknowledge that roofing felt is inherently a temporary weatherproofing membrane. It’s not designed as a long-term structural component of a roof and requires regular maintenance and eventual replacement. The adhesive and nail system offers a means of securing the felt temporarily but doesn’t address the underlying issues of timber decay or water ingress. Considering this, investing in treated timber for the roof structure itself – using pressure-treated softwood rated for external use – is often a more sensible long-term strategy than relying solely on roofing felt and fixings. While the Everbuild adhesive can enhance the bond between the felt and the timber, it cannot fundamentally alter the inherent properties of the wood itself. Therefore, while our comparison focuses on the immediate fixing solutions, a holistic approach to roof maintenance – encompassing regular inspections, prompt repairs, and eventual replacement – is crucial for ensuring the longevity and performance of any roofing system within the challenging British climate.
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-11.