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Wallbarn's fixed-height paving pedestal discs enhance drainage, even at low heights. Made from durable PVC, these 150mm diameter discs feature upper surfaces with circular ridges and grooves for efficient rainwater runoff. This prevents water buildup, protecting timber joists from prolonged exposure. Ideal for tight height thresholds, these 7mm thick pads are perfect for refurbishment projects, allowing for new decking overlay without complete removal. They offer an 8,000kg weight tolerance, have six drainage holes, and a 60mm distance between lugs. The Wallbarn TD headpiece includes sidebars spaced 60mm apart, fitting standard 2-inch timber joists that form a sturdy decking framework. Mechanical fixing is unnecessary; the deck's weight ensures security, making installation simpler, cost-effective, and quicker, while easing post-installation inspections and leak detection.. Wallbarn 7mm PVC Timber Decking Pad Black