Galvanised clout nails with a large diameter head, sized for fixing roofing felt, slates and shingles. Available in a range of shank lengths and gauges, in 0.5kg, 1kg and 2.5kg packs.
Size
Weight
Pack Type
Price
QTY
25 x 2.65mm
2.5kg
TIMtub
£9.83£11.80
30 x 2.65mm
2.5kg
TIMtub
£9.83£11.80
40 x 2.65mm
2.5kg
TIMtub
£9.83£11.80
40 x 3.35mm
2.5kg
TIMtub
£9.83£11.80
50 x 2.65mm
2.5kg
TIMtub
£9.83£11.80
50 x 3.35mm
2.5kg
TIMtub
£9.83£11.80
65 x 2.65mm
2.5kg
TIMtub
£9.83£11.80
65 x 3.75mm
2.5kg
TIMtub
£9.83£11.80
75 x 3.75mm
2.5kg
TIMtub
£9.83£11.80
25 x 2.65mm
1kg
TIMbag
£3.24£3.89
30 x 2.65mm
1kg
TIMbag
£3.24£3.89
40 x 2.65mm
1kg
TIMbag
£3.24£3.89
40 x 3.35mm
1kg
TIMbag
£3.24£3.89
50 x 2.65mm
1kg
TIMbag
£3.24£3.89
50 x 3.35mm
1kg
TIMbag
£3.24£3.89
65 x 2.65mm
1kg
TIMbag
£3.24£3.89
65 x 3.75mm
1kg
TIMbag
£3.24£3.89
75 x 3.75mm
1kg
TIMbag
£3.24£3.89
25 x 2.65mm
0.5kg
TIMbag
£1.82£2.18
30 x 2.65mm
0.5kg
TIMbag
£1.82£2.18
40 x 2.65mm
0.5kg
TIMbag
£1.82£2.18
40 x 3.35mm
0.5kg
TIMbag
£1.82£2.18
50 x 2.65mm
0.5kg
TIMbag
£1.82£2.18
50 x 3.35mm
0.5kg
TIMbag
£1.82£2.18
65 x 2.65mm
0.5kg
TIMbag
£1.82£2.18
65 x 3.75mm
0.5kg
TIMbag
£1.82£2.18
75 x 3.75mm
0.5kg
TIMbag
£1.82£2.18
Galvanised clout nails are the standard fixing for roofing felt, and for good reason. The large flat head spreads the load across the felt surface, reducing the chance of the material tearing through under wind uplift or movement. These roofing felt nails conform to Eurocode 5 and are rated for service class 2, meaning they are suitable for covered exterior environments where moisture exposure is moderate and ongoing.
The hot-dip galvanised coating provides medium-duty rust protection, which is what you need when nails are sitting beneath roofing felt or battens and exposed to condensation and damp over time. Bare steel nails will corrode quickly in these conditions and can stain the materials around them. Galvanised clout nails hold their integrity far longer, keeping the fix secure and the surface clean.
Clout Nail Sizes and Gauges
These nails are available in a range of sizes to suit different applications. The 25 x 2.65mm and 30 x 2.65mm sizes are well suited to lightweight roofing felt on flat roofs and timber-framed structures. The 40mm and 50mm lengths in 2.65mm gauge cover most standard pitched roof felt work, while the heavier 3.35mm and 3.75mm gauges in the longer lengths give more holding power when fixing into thicker battens or harder timber. The 65mm and 75mm options in the heavier gauge are worth having when you need a bit more depth, particularly in older or denser timber.
Packs come in 0.5kg, 1kg and 2.5kg sizes, available in TIMbag or TIMtub format. The tub is the practical choice on site as it stays open without spilling and keeps nails dry between jobs. For larger roofing contracts, the 2.5kg packs are the sensible buy.
Eurocode 5 and Service Class 2
These roofing felt nails conform to Eurocode 5, the structural design standard for timber structures, and are rated for service class 2. This covers conditions where timber moisture content may occasionally exceed 20%, which is typical in ventilated roof spaces and covered exterior applications. It is worth knowing this if you are working on projects that require documented compliance.
Available across nine size combinations, these galvanised clout nails cover the full range of roofing felt fixing requirements from lightweight shed roofing through to full residential pitched roof installations.
Pro Tip: When fixing roofing felt in cold weather, the felt becomes less flexible and more prone to tearing around the nail head, so space your clout nails closer together along the laps and edges rather than relying on wider spacing to compensate.
Galvanised clout nails are used primarily for fixing roofing felt to timber roof decks and sarking boards on both pitched and flat roofs. They are also used for attaching slates and shingles where nailing through the material into battens is required. Roofers, general builders and groundworkers carrying out shed and outbuilding work all reach for clout nails as the standard fixing for these applications. The large head makes them suitable wherever a small-headed nail would pull through the material under load.
Best For
Fixing roofing felt to timber decks
Attaching slates and shingles
Shed and outbuilding roofing
Residential pitched roof installations
Flat roof felt applications
Available In
25 x 2.65mm
30 x 2.65mm
40 x 2.65mm
40 x 3.35mm
50 x 2.65mm
50 x 3.35mm
65 x 2.65mm
65 x 3.75mm
75 x 3.75mm
0.5kg, 1kg and 2.5kg pack weights
TIMbag and TIMtub pack formats
Key Properties
Hot-dip galvanised coating
Medium-duty rust protection
Large diameter head
Conforms to Eurocode 5
Service class 2 rated
Not suitable for: Not suitable for applications requiring heavy-duty corrosion resistance, such as coastal environments with direct salt spray exposure, where stainless steel nails would be the correct choice. Not designed for use with a nail gun.
Select the nail length based on the material being fixed and the timber beneath it. For standard roofing felt on a timber deck, a 30mm or 40mm nail in 2.65mm gauge is typically sufficient. For thicker materials or harder timber, move to the heavier gauge options.
Space nails at recommended intervals along laps and edges as specified by the felt manufacturer, and ensure each nail is driven flush without the head cutting through the felt surface. Overdriving is the most common cause of felt tearing around fixings, so use steady controlled hammer blows rather than one hard strike.
Select the correct nail length and gauge for your felt thickness and timber substrate
Mark or estimate your nail spacing along the felt lap before starting
Position the nail perpendicular to the surface to avoid the shank bending on entry
Drive the nail with firm, controlled hammer strikes until the head sits flush with the felt
Check that the head has not cut into or torn through the felt surface
Work along laps and edges first, then fix intermediate points as required by the felt specification
What size clout nail should I use for standard roofing felt?
For most standard roofing felt applications on timber decks, a 30 x 2.65mm or 40 x 2.65mm nail is the typical choice. The 30mm length suits thinner decking and lighter felt, while the 40mm gives a bit more penetration into the timber for a stronger hold. For heavier felt grades or rougher sawn timber, the 40 x 3.35mm or 50 x 3.35mm options are worth considering.
Are these clout nails suitable for exterior use?
Yes. These galvanised clout nails are rated for service class 2 under Eurocode 5, which covers moderate exterior exposure such as ventilated roof spaces and covered structural applications. The galvanised coating provides medium-duty rust protection suitable for these conditions. For direct exposure to coastal salt air or standing water, stainless steel nails would be a more appropriate choice.
These clout nails are manufactured from steel wire with a hot-dip galvanised coating that provides medium-duty corrosion resistance. The large flat head is a defining feature of the clout nail profile, designed to hold sheet and membrane materials without tearing through. The nails conform to Eurocode 5 structural timber design standards and are rated for service class 2 environments, covering conditions where timber moisture content may periodically exceed 20%.
Coating
Hot-dip galvanised
Corrosion Resistance
Medium duty
Standard
Eurocode 5
Service Class
2
Available Lengths
25mm, 30mm, 40mm, 50mm, 65mm, 75mm
Available Gauges
2.65mm, 3.35mm, 3.75mm
Pack Weights
0.5kg, 1kg, 2.5kg
Pack Types
TIMbag, TIMtub
Size
25 x 2.65mm, 30 x 2.65mm, 40 x 2.65mm, 40 x 3.35mm, 50 x 2.65mm, 50 x 3.35mm, 65 x 2.65mm, 65 x 3.75mm, 75 x 3.75mm
Weight
0.5kg, 1kg, 2.5kg
Pack Type
TIMbag, TIMtub
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