Buildex® self-drilling fasteners are designed with features to suit a wide number of applications and materials and it is important that they are used correctly. Refer to the product data sheets for the suitable product for the intended application and the Installation Instructions. It is recommended to use a Driver Tool with a clutch and a minimum power rating of 600W with a minimum of 1500rpm. If a Mains Powered Drill, a Cordless Impact Driver Tool or a Cordless Drill is used care needs to be taken not to over tighten the fastener or damage the painted product during installation.

What screws are best for wood?

The best screw depends on your timber and project. For decking, Buildex® Self-Drilling Screws offer a flush, split-free finish, while Dec-King® 316 Stainless Steel is the gold standard for coastal or poolside areas.

For heavy structures like pergolas, fasteners like Buildex® Bugle Head Batten Screws provide superior pull-down strength. Use Timber Construction Screws for fixing metal hardware to wood. Finally, for treated timber, Countersunk Ribbed Head screws with a Climacoat® finish are recommended to prevent chemical corrosion. Choosing the correct fastener will ensure your structure remains durable and secure.

Decking Screw Guide

Decking Screws Dec-King®

Bugle Batten Screws

Fastener Corrosion Protection Requirements

Do deck screws require pre-drilling?

Whether pre-drilling is required depends on your timber. Buildex® Self-Drilling Decking Screws are trade-grade fasteners engineered to allow you to skip this step. They feature a Quick-Drive Point for immediate grip and Super Threads that draw out fibres to reduce friction. Cutting Nibs under the head ensure a flush finish without pre-countersinking.

While flexible softwoods like treated pine often don't require pilot holes, dense hardwoods like Jarrah may still crack or cause screws to seize. For these heavier timbers, using a Buildex® Bugle Head Type 17 is recommended.

Decking Screw Guide

What is the best way to screw down metal roofing?

During installation, apply steady pressure and avoid overdriving as over-tightening can damage the washer and lead to leaks. By using a roofing fastener with a sharp point design, this will help screw down your metal roofing quicker and more efficiently.

For best results, select a metal roofing screw, such as RoofLOK® or RoofZips®, which are designed to securely grip metal sheeting effectively and prevent water entry and over-drilling.

Always match the correct screw to your substrate, whether you’re fixing into steel or timber battens.

Are stainless screws worth it for suburban installs?

Yes, in most suburban environments, stainless screws can be a good option for various general residential applications and timber projects, such as fencing, pergolas and decking, even when there is mild humidity or salt exposure. Buildex® Stainless Steel 304 fasteners offer good corrosion resistance in inland, low-corrosive conditions.

For outdoor projects and poolside decking that require marine-grade corrosion protection, Buildex® Stainless Steel 316 fasteners offer superior strength.

For areas with harsher environmental exposures, turn to coatings with a Buildex Climaseal® 4 coating or higher — particularly for metal roofing and cladding projects.

What fasteners are not recommended for Australian coastline environments?

Standard screws with zinc alloy and light galvanised coating are not recommended near coastlines due to potential zinc breakdown. You will want to avoid these when the proximity of the tidal zone and salt spray is close, as this will expose your steel fasteners to a quicker corrosion rate.

Only use Buildex screws with a zinc alloy coating for general indoor and some outdoor environments, such as sheltered patios and garages. Use standard galvanised coated screws for general outdoor construction (e.g. framing, fencing and general hardware) that is non-marine.