Roofing Bolts
(33 Products)Roofing bolts are strong, threaded fasteners used to secure roofing materials like metal sheets, brackets, and support frames. They usually come with a square nut and a wide, flat head, which helps spread pressure and prevent damage to the surface being fixed.
What Are Roofing Bolts?
A roofing bolt is a fully threaded steel fastener used for fixing roofing components. These bolts typically have a flat or dome head and are coated in zinc to protect against corrosion.
When used with a square nut and washer, they provide a strong hold under tough conditions, such as wind and moisture. They are used in metal roofs, brackets, cladding systems, and structural supports.
Common Types Of Roofing Bolts
- Hook Bolts: These have a curved end that loops around frames or rails - ideal for situations where drilling straight through isn’t possible.
- Wide-Head Bolts: Helps spread pressure so thin panels don’t get crushed. Especially useful on lightweight sheet metal or softer materials.
- Fully Threaded Bolts: Gives you greater control when tightening and lining things up. Perfect if you're working on uneven surfaces or adjusting positioning as you go.
Applications
You’ll find roofing bolts used in all kinds of settings - residential, commercial, agricultural.
Some typical places include:
- Fixing down corrugated metal sheets
- Holding up support brackets or rails
- Mounting rooftop gear like solar panels or air conditioning units
- Securing edge trims or cladding panels
Benefits
- They last: Zinc coating helps them resist rust. Suitable for use in wet or coastal areas.
- They’re tough: Made from steel, they won’t snap or shear under pressure.
- Work with different materials: Timber, metal frames, even composite roofs.
- Easy to fit: Basic tools do the job. No special equipment needed.
- Protect delicate surfaces: The wide head or washer spreads the load.
- Stay locked in: Especially when paired with a square nut or thread locker.
- Give you room to adjust: Fully threaded bolts let you fine-tune the fit.
Frequently Asked Roofing Bolts Questions
Do Roofing Bolts Work On All Roofs?
They work on most. If you’re dealing with metal sheeting, timber frames, or light-duty commercial roofs, they’re a great choice. You’ll just need the right size and style.
How Tight Should They Be?
Tight enough to hold, but don’t go overboard. Too tight, and you risk crushing the panel or stripping threads. A torque wrench helps, but hand-tight with a good feel is usually fine for smaller jobs.
Can I Fit Roofing Bolts Myself?
Yes, if you’ve got the right tools and can work safely. For basic sheds or garages, you can most likely handle it yourself. Bigger jobs, or anything involving heights or heavy loads, call for a professional.
What Stops Them Coming Loose?
Use square nuts, add washers, and tighten them properly. On jobs that vibrate a lot (like near vents or fans), some people use a drop of thread-lock glue or even a nylon locking nut.
Are They All Zinc-Plated?
Not all, but most of the common ones are. Zinc stops them rusting too fast. For coastal or very wet areas, stainless steel might be a better bet.
