Spax Screws - FAQ's

What makes Spax screws different from other screws on the market?
Spax screws are known for their high-quality construction and advanced features, such as a unique thread design, special coating for corrosion resistance, and a patented Wirox coating. These features provide excellent holding power, durability, and long-term performance, making Spax a top choice for professionals and DIYers alike.
What materials are Spax screws designed for?
Spax screws are versatile and can be used with a wide range of materials, including wood, plastic, metal, and masonry. They offer specific screw types designed for different applications, ensuring optimal performance on each material.
Are Spax screws corrosion-resistant?
Yes, Spax screws are designed to be highly resistant to corrosion. They feature a patented Wirox coating (or other specialized coatings, depending on the product), which protects the screws against rust and wear, making them suitable for both indoor and outdoor use.
How do I know which size Spax screw I need for my project?
Spax screws come in a wide range of sizes, lengths, and thread designs. To choose the right screw, consider the material you're working with, the thickness of the materials, and the required load-bearing capacity. You can also consult the product specifications on the Spax website or packaging for recommended screw sizes for different applications.
Are Spax screws suitable for outdoor use?
Yes, many Spax screws are specifically designed for outdoor use. Their corrosion-resistant coatings, such as the Wirox coating, protect the screws from the elements, making them perfect for applications in decking, fencing, garden furniture, and other outdoor projects.
Can I use Spax screws with softwood and hardwood?
Yes, Spax screws are designed to work with both softwood and hardwood. The screws are engineered with special thread designs and a sharp point to allow for easy penetration and a strong, secure hold in both materials.
Are Spax screws self-drilling?
Some Spax screws, such as their T-Star plus and Multi-purpose screws, feature a self-drilling tip, which helps eliminate the need for pre-drilling, especially in wood and plastic. However, for tougher materials like metal, a pre-drill may still be required.
What are the benefits of the patented Spax thread design?
The patented thread design on Spax screws provides several benefits, including reduced driving resistance, faster insertion, and better grip in materials. This design also ensures greater stability and holding power, making Spax screws a reliable choice for secure fastening.
Are Spax screws available in different drive types?
Yes, Spax screws are available with a variety of drive types, including Pozidriv and Torx, allowing users to choose the most suitable drive for their tools and preferences. The Torx drive, in particular, is known for providing better torque and reducing cam-out during driving.
Can Spax screws be used for structural applications?
Yes, many Spax screws are specifically designed for structural applications, such as framing, decking, and heavy-duty wood construction. Their strong grip and holding power make them ideal for use in load-bearing structures.
What is the maximum load capacity of Spax screws?
The maximum load capacity of Spax screws depends on the size and material used, as well as the application. It’s important to check the product specifications to ensure you are using the right screw for your specific load requirements. Spax offers screws designed for both light-duty and heavy-duty applications.
How does the Wirox coating on Spax screws work?
The Wirox coating is a unique, multi-layered protection system that ensures maximum corrosion resistance. It helps protect the screws from rust and wear, especially in outdoor environments, while maintaining high performance and long-lasting durability.
Are Spax screws environmentally friendly?
Spax is committed to sustainability and environmental responsibility. The company uses eco-friendly processes in their manufacturing, and their products are designed to be durable and long-lasting, reducing the need for replacements. Additionally, some Spax screws are made from recycled materials, and they offer products that are ideal for sustainable construction practices.
What applications are Spax screws best suited for?
Spax screws are suitable for a wide variety of applications, including wood and furniture construction, decking, fencing, roofing, metalwork, and even masonry. Their versatility makes them a popular choice in both residential and commercial construction projects.
Can Spax screws be removed once installed?
Yes, Spax screws can be removed, though the ease of removal depends on the material and the type of screw used. The screws are designed with a drive system that allows for easy extraction if needed, though it’s important to ensure the correct tool is used to avoid damaging the screw or the material.
What size screw should I use for decking boards?
For standard decking boards, 4.5mm to 5.0mm diameter screws with lengths between 50mm and 70mm are typically recommended. The exact size depends on the thickness of the decking board and the subframe. Spax decking screws are specifically designed for this application, offering corrosion resistance and strong holding power.
What screws should I use for 4x2 timber?
For 4x2 timber (100mm x 50mm), screws between 80mm and 120mm are commonly used depending on the application. A general rule is to ensure the screw penetrates at least half the thickness of the second piece of timber. Spax structural screws are ideal for these types of applications.
Do I need to pre-drill when using Spax screws?
In most wood applications, pre-drilling is not required when using Spax screws due to their sharp point and advanced thread design. However, pre-drilling is recommended when working close to edges, with hardwoods, or when fixing into metal or masonry.
What is the difference between Pozidriv and Torx screws?
Pozidriv screws are widely used and compatible with standard screwdriver bits, while Torx (T-Star) screws provide better torque transfer and reduce cam-out. Torx screws are generally preferred for professional use and repeated driving applications.
Are Spax screws worth the extra cost?
Spax screws are engineered for performance, durability, and ease of use. Their advanced thread design, coatings, and drive systems reduce installation time and improve reliability, making them a cost-effective choice for both professionals and DIY users over the long term.
What screws should I use for outdoor timber projects?
For outdoor projects such as decking, fencing, or garden structures, it is important to use corrosion-resistant screws. Spax screws with Wirox coating or stainless steel options are ideal as they provide long-lasting protection against weather and moisture.
Can I use Spax screws for MDF or chipboard?
Yes, Spax multi-purpose screws are suitable for MDF and chipboard. Their thread design helps prevent splitting and ensures a clean, secure fixing in engineered wood materials.
What length screw should I use?
A common rule is that the screw should be at least 2 to 2.5 times the thickness of the material being fixed. This ensures a strong hold and proper penetration into the base material.
Are Spax screws suitable for use with treated timber?
Yes, Spax screws with appropriate coatings such as Wirox or stainless steel are suitable for use with treated timber. These coatings help prevent corrosion caused by the chemicals used in pressure-treated wood.
What screws are best for hardwood?
For hardwood applications, it is recommended to use high-quality screws such as Spax with a sharp point and specialised thread design. Pre-drilling may be required depending on the density of the wood to prevent splitting.
