Choosing the right fastener is crucial for building a sturdy and long-lasting DIY garden bench. For securing wooden slats, the best options are typically wood screws or deck screws. These screws pull the slat down tightly against the frame, creating a strong joint. For outdoor use, always opt for corrosion-resistant materials like stainless steel, coated deck screws, or brass to prevent rust stains and weakening.
Pre-drilling a pilot hole slightly smaller than the screw's shaft is highly recommended. This prevents the wood, especially hardwoods, from splitting and allows for easier, more precise installation. While nails are quicker, they can work loose over time as the wood expands and contracts with weather changes. Screws provide superior holding power and are easier to remove if you need to replace a slat.
For a completely hidden fastener look, consider pocket-hole screws. This method involves drilling an angled hole into the side of the slat and into the bench frame, creating a very strong and professional joint with no visible screw heads on top. Whichever you choose, pairing the correct screw with a pilot hole will ensure your garden bench remains secure and beautiful for seasons to come.