Deck spacer with 4 adjustable thickness settings (3 / 6 / 9 / 12 mm) for precise, consistent decking gaps on new builds and renovations. Key benefits — why you need it Ensures uniform gap spacing for clean, professional-looking joints on hardwood and composite decking. Reduces rework and alignment issues by stabilizing boards during installation. Promotes drainage and airflow to prevent moisture buildup and improve long-term decking performance. Designed to integrate with pressure-treated materials and withstand all weather conditions. What makes it stand out Four selectable thickness options (3 / 6 / 9 / 12 mm) let you standardize joint width across different materials and project requirements. Made from an erosion-resistant composite material for even load distribution and durable performance. Thoughtful geometry supports drainage and precise clamp spacing, improving installation accuracy and workflow efficiency. Universal compatibility with hardwood and composite systems creates consistent, non-slip surfaces in wet or high-traffic areas. Key features (function, compatibility, size, material, performance) Function: Adjustable spacer for setting and holding uniform decking gaps; assists in stabilization and clamp positioning. Compatibility: Suitable for hardwood decking, composite decking systems, and use alongside pressure-treated (kesseldruckimprägniert) materials. Size options: 3 mm, 6 mm, 9 mm, 12 mm thickness settings for flexible gap specification. Material: Erosion-resistant composite that provides stable load transfer and durable weather performance. Performance: Improves drainage and air circulation under decking, supports even distribution of loads, and helps create slip-resistant surfaces. Practical applications (use scenarios) Pool decks: Maintain consistent gaps and improved drainage around swimming pools for safer, slip-resistant walking surfaces. Outdoor seating and lounge areas: Create stable, attractive decking around patios and seating zones, ensuring boards stay aligned and ventilated. Garden paths and walkways: Use with composite or hardwood planks to produce even joints and long-lasting paths that resist moisture damage. Installation advantages Simplifies alignment and clamping by providing repeatable spacing and stabilization points. Works across both renovation and new construction projects, minimizing material adjustments on site. Compatible with common decking methods and pressure-treated substrates, allowing straightforward integration into existing workflows. Summary of specifications Adjustable thickness options: 3 mm, 6 mm, 9 mm, 12 mm Material: Erosion-resistant composite Compatibility: Hardwood, composite decking systems, pressure-treated materials Primary functions: Gap spacing, drainage promotion, stabilization, even load distribution Use this decking spacer to achieve accurate, durable, and weather-resistant results with faster, more reliable installations.