Use these mushroom head bolts from RS PRO to secure thin metal sheeting or other material to your roof. Their large flat heads are specifically designed to spread their holding force and provide a firm join that's unlikely to damage materials, even when it's under stress.
The bolts feature outstanding resistance to corrosion, thanks to their zinc-plating, which stops water from entering the base metal and causing it to rust. The box of 100 bolts is supplied with nuts, so there's no need to buy additional fixing components. It's easy to screw the cross-top bolts in using a conventional Phillips head screwdriver, which means you don't need any special tools. Builders frequently use bolts like these on job sites. They're well-suited to outdoor environments and you can also keep them at home to tackle roofing repair jobs.

• Phillips drive
• Bright zinc-plated finish
• Length of 16 mm
• Made of mild steel
• Thread size of M6