umbrella head roofing nails and their uses/applications
Umbrella head roofing nails, also known as roofing nails or clout nails, are specialized nails used predominantly in the roofing industry. They get their name from the distinct umbrella or mushroom-shaped head they possess, which is larger than the shaft and the point of the nail.
Design and Structure
The design and structure of umbrella head roofing nails make them ideal for specific applications. Here are the key design features:
- Umbrella Head: The large, flat, circular head of these nails is the ‘umbrella.’ This design provides a larger surface area that effectively distributes the holding force over a broader area, which is helpful in preventing damage to the material being fastened. The design also helps to ensure that the nail does not pull through the material, providing a secure hold.
- Sharp Point: The sharp point at the bottom allows for easy and quick penetration into the roofing materials and the underlying wood or other substrate.
- Shank: The shank can be smooth, ringed, or spiraled, with each type providing a different degree of grip strength. Ringed or spiraled shanks provide better holding power than smooth ones.
Material
They are usually made of galvanized steel to resist rust and corrosion, which is especially important because these nails are exposed to harsh weather conditions. Some varieties are also made of aluminum or stainless steel.
Uses and Applications
- Roofing Shingles: This is the primary use for umbrella head roofing nails. They’re used to secure asphalt, fiberglass, or other types of shingles to roofs.
- Roofing Felt: They are also used to secure roofing felt, which is a protective layer between the roof deck and the roofing shingles.
- Sheet Metal: They can be used to secure sheet metal roofing as well.
- Insulation Boards: They can be used in securing insulation boards to the structure.
- Other Construction Works: Apart from roofing, these nails can also be used in other construction work where the wide head can provide a secure grip.
It’s important to note that the size and type of the umbrella head roofing nail to be used will depend on the roofing material and the local building codes.
When installing roofing materials, it’s crucial to ensure that the nails are driven in straight and aren’t overdriven to prevent damage to the material. If the nails are driven in too far, they can cause depressions or cracks in the roofing material, which can lead to leaks over time.