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Why Are Coatings Important?

Discover the Protection Systems Used by Info-GLOBAL Fastening®

In the world of professional fastening systems, durability, safety, and resistance to environmental conditions are essential. That’s why at Info-GLOBAL Fastening®, we place a strong emphasis on the quality of protective coatings that shield our fasteners from corrosion, wear, and weather exposure.

Why Are Protective Coatings So Important?

A coating is more than just a surface layer — it’s a critical protective barrier that:

• Shields fasteners from corrosion and moisture,

• Increases mechanical resistance,

• Enhances aesthetic appearance,

• Extends the lifetime of the product,

• Ensures safe and reliable fastening in all environments.

Thanks to properly selected coating systems, our screws can be confidently used in roofing, facade installations, and industrial applications, including high-humidity or aggressive environments.

Protective coatings used by Info-GLOBAL Fastening®

Our product range includes fasteners coated with proven and effective corrosion protection systems, such as:

Zinc Coating – 12μm and 24μm

• Standard protection for steel components

• Provides basic resistance against moisture and corrosion

• An economical and durable solution for general construction use

EsC™ Coating (Ecological Suppressor of Corrosion)

• Excellent corrosion resistance, even in aggressive conditions

• Used for steel and aluminum sheet screws

• Perfect for outdoor applications and steel structures

Eco-GrePert™ Coating

• Natural rust resistance without additional finishing

• Recommended for humid, industrial, or coastal environments

• Offers the highest durability and chemical resistance

Powder-Coated Finish (RAL colors)

• Heat-hardened powder paint coating

• Aesthetic integration with roofing or facades

• Additional protection against UV radiation and corrosion

At Info-GLOBAL Fastening®, we never compromise on quality. By applying professional protective coatings, we ensure that our fastening elements deliver long-term performance and reliability — no matter the environment.

Looking for durable and secure fastening solutions?

Trust the experience of Info-GLOBAL Fastening® — choose fasteners built for longevity.

The Importance of Proper Installation of Self-Drilling Roofing Screws

Correct installation of self-drilling (farmer) screws is crucial for the durability and watertightness of the connection between the roofing sheet and the roof structure. Improper installation may lead to leaks, water ingress, and accelerated wear of roofing components.

The Role of Self-Drilling Screws in Roof Construction

Self-drilling screws are specifically designed for fastening tile-effect sheets, trapezoidal sheets, and metal roofing panels to wooden substructures. Their design provides:

• Mounting stability – the thread and integrated drill tip allow for quick installation and secure anchoring in wood.

• Watertight connection – the EPDM washer under the screw head protects the fastening point against water and moisture.

• Corrosion resistance – special protective coatings prevent rust and ensure reliable performance in harsh weather conditions.

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Impact of Proper Installation on Roof Tightness

To ensure optimal waterproofing, it is essential to follow the manufacturer’s instructions and adhere to the following key guidelines:

• Proper screw length selection – the screws must be long enough to ensure secure anchoring in the wooden substructure.

• Correct placement of screws – screws should be inserted at the highest point of the tile sheet wave, not in the lower groove, to avoid water accumulation around the fastener.

• Appropriate tightening – screws should not be over-tightened (which may deform the washer and reduce its effectiveness) or too loose (which may cause leaks and loosening over time).

• Avoid overheating during installation – drilling at high speeds can damage the protective coating on both the sheet and the screw, accelerating corrosion.

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Consequences of Installation Errors

Improper installation of self-drilling screws can lead to serious issues, such as:

• Water leaks – a poorly seated or damaged washer cannot protect against moisture penetration.

• Corrosion of screws and sheets – if the protective coating is damaged, rust can form, weakening the roof structure.

• Loose fastenings – under-tightened screws may loosen over time, leading to noise and reduced stability of the roofing.

• Sheet detachment during strong winds – incorrectly fastened sheets are more susceptible to wind uplift, endangering the entire structure.

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Proper Installation Techniques Ensure Long-Lasting Roof Performance

Using the correct installation methods, ensuring proper tightening, and selecting high-quality screws will guarantee safety, longevity, and an aesthetically pleasing roof for many years.

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How to Select the Right Screws?

There are three key factors that affect proper screw selection:

1. Type of Screw

Should be selected based on:

• the type of structural substrate

• the required load-bearing capacity specified in the project

• the minimum and maximum substrate thickness

2. Thickness of Fastened Components

• type and thickness of the substrate

• thickness of the elements being fastened

For sandwich panels:

• thickness of the sandwich panel at the mounting point

• thickness of caps and sealing tapes

3. Corrosion Resistance

Choosing the right fasteners is essential for the durability and safety of the structure, especially in corrosion-prone environments.

Selecting corrosion-resistant fasteners improves the lifespan and reliability of the connection and reduces the risk of damage due to material degradation. It is advisable to follow standards and manufacturer recommendations to ensure long-term performance.

Coating of Farmer Screws – Durability, Aesthetics, and Corrosion Protection

Farmer screws used for mounting metal roof tiles are exposed to intense atmospheric conditions. Therefore, it is crucial that they have a durable and resistant coating that not only enhances their appearance but, most importantly, protects them from corrosion. In our production, we focus on quality – that’s why we carry out the screw painting process exclusively in-house, using advanced powder coating lines and powder paints from leading manufacturers. This gives us full control over the coating quality and allows us to guarantee resistance to moisture, UV radiation, and changing weather conditions.

What Differentiates the Coatings?

There are two main methods of applying protective coatings: powder coating and wet painting. Both methods impact the durability and resistance of the screws to environmental factors.

It’s important to note that if the screws are intended for outdoor use in areas exposed to rain, snow, and UV radiation, powder coating is definitely the better choice due to its greater durability and corrosion resistance.

Powder Coating

This involves applying electrostatically charged powder particles to the screw’s surface.

The screw is then cured in an oven at a temperature of around 160–200°C, which causes the powder to melt and form a durable coating. Powder coating provides superior anti-corrosion protection due to its thick and uniform layer, significantly extending the screw’s lifespan, especially in humid and harsh weather conditions.

Advantages:

• High corrosion resistance – a thick, sealed layer of paint effectively protects against moisture and salt.

• Excellent mechanical durability – the coating is more resistant to impact and abrasion than wet paint.

• No dripping – thanks to electrostatic application, the paint does not run or form streaks.

• Eco-friendly – solvent-free, reducing the emission of harmful substances.

Wet Painting

This method involves spraying liquid paint using a spray gun.

After application, the paint dries at room temperature or in an oven, forming a thin protective layer that is more susceptible to abrasion, mechanical damage, or chipping. It offers lower corrosion resistance compared to powder coating, and the use of solvents makes it less environmentally friendly.

Why is Powder Coating the Best Choice?

If you plan to use Info-GLOBAL Fastening® colored screws on a roof, façade, or for mounting steel structures and sandwich panels, powder coating is the best solution so far. Thanks to increased resistance to rain, snow, frost, and UV radiation, our powder-coated screws are the top choice.