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Concrete is one of the strongest building materials used in modern construction, making it essential to choose fixings specifically designed for masonry and concrete. Unlike timber, concrete cannot be reliably fastened using standard wood screws.
Concrete screws are engineered with hardened threads that cut directly into a pre-drilled hole, creating a secure mechanical connection without the need for an expansion sleeve.
Internal links to add:
Structural screws are designed for heavy-duty timber construction and can often replace traditional coach screws or bolts in many structural applications.
These screws are commonly used in:
Modern structural screws often feature:
For professional timber construction, structural screws provide both speed and performance.
Ireland’s climate presents unique challenges for construction fixings. Frequent rainfall, coastal exposure and damp conditions can lead to corrosion if unsuitable screws are used.
Stainless steel screws provide excellent resistance to rust and staining, making them ideal for outdoor and marine environments.
Suitable for:
Recommended for:
While stainless steel screws generally cost more than zinc-plated alternatives, they can significantly reduce maintenance and replacement costs in harsh environments.
The coating on a screw affects its resistance to corrosion, wear and weathering. Selecting the right finish is especially important in Ireland’s damp climate.
Suitable for:
Advantages:
Not recommended for prolonged outdoor exposure.
Often used for:
Provides slightly improved corrosion resistance compared with bright zinc plating.
Premium exterior screws often feature advanced ceramic coatings.
Benefits include:
Ideal for:
Commonly used in:
Advantages:
The highest level of corrosion resistance for demanding environments, particularly in coastal regions.
Selecting the correct screw length is just as important as choosing the right screw type.
A general rule is that the screw should penetrate the base material by at least two-thirds of its length, while also accounting for the thickness and strength of the materials being joined.
| Material Thickness | Suggested Screw Length |
|---|---|
| 18 mm Timber | 40–50 mm |
| 25 mm Timber | 60 mm |
| 38 mm Timber | 70–80 mm |
| 50 mm Timber | 90–100 mm |
| Deck Boards | 50–65 mm |
| Composite Decking | Manufacturer specification |
| Steel Sheet | Based on steel thickness and drill capacity |
Always refer to the product’s technical data for critical structural applications.
Different head designs are intended for different purposes.
Ideal for:
Provides a flush finish.
Suitable for:
Offers a larger bearing surface.
Commonly used in:
Designed to spread the load over a wider area.
Preferred for:
Allows higher installation torque and is often paired with sealing washers.
Selecting the correct screw depends on several factors:
Taking the time to choose the right fixing can improve installation speed, increase durability and reduce long-term maintenance.
