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When constructing a home, commercial building, agricultural shed, modular unit or engineering project, every fixing matters. The strength, durability and safety of your build often depend on selecting the correct screw for the job.
While screws may appear similar, each type is engineered for a specific purpose. The wrong screw can reduce holding power, damage materials, increase installation time and lead to expensive repairs.
Whether you’re a builder, carpenter, roofer, steel fabricator, engineer or DIY enthusiast, understanding the different types of construction screws will help you achieve stronger, safer and longer-lasting results.
At Icon Fasteners & Supplies Ltd, we supply professional-grade construction screws and fixings to customers throughout Ireland. Our range includes timber screws, self-drilling screws, concrete fixings, roofing screws, stainless steel fasteners and structural fixings for every type of construction project. With nationwide delivery and trade pricing, we help professionals and DIY customers find the right fixing for every application.
A screw is much more than a simple fastener. It is designed to create a secure mechanical connection while resisting movement, vibration, weather and load over many years.
Choosing the wrong screw can result in:
Professional builders know that investing in the correct fixing from the beginning reduces labour costs, minimises callbacks and improves the overall quality of the finished project.
Understanding the anatomy of a screw makes it easier to select the correct product.
The head transfers the driving force from the tool to the screw.
Common head styles include:
Each head type is designed for a specific application, such as flush finishes, high clamping force or roofing installations.
The drive is the recess that accepts the screwdriver or drill bit.
Popular drive types include:
Torx drives have become the preferred choice for many professional installers because they provide excellent torque transfer and reduce cam-out, making installation faster and more reliable.
The thread is responsible for gripping the material.
Different thread designs include:
Best suited for:
Advantages:
Designed for:
Advantages:
Modern premium wood screws often feature twin threads.
Benefits include:
The point determines how the screw enters the material.
Examples include:
The correct point type reduces the need for pre-drilling and helps improve installation efficiency.
Construction screws are designed for different materials and applications. Choosing the correct type is essential for achieving the best performance.
Wood screws are one of the most commonly used fasteners in residential and commercial construction throughout Ireland.
They are suitable for:
Modern premium wood screws often include features such as:
These features allow the screw to cut cleanly into timber while reducing splitting and improving pull-out strength.
Self-drilling screws, commonly known as TEK screws, are engineered for fastening into steel without the need for a pilot hole (within the screw’s rated drilling capacity).
They combine drilling, tapping and fastening in a single operation, making them ideal for:
Advantages include:
Available in:
Common finishes include:
Roofing screws are designed to secure metal sheets, composite panels and fibre cement roofing while providing a weatherproof seal.
Key features include:
Suitable for:
Choosing the correct roofing screw is essential to prevent leaks, maintain wind resistance and extend the lifespan of the roof.
