Wallbarn has designed a 7mm thick PVC disc for paving complete with integrated spacing lugs. The pad will lift paving off the surface by 7mm, making it ideal for retro-fit projects and areas with very low height thresholds. The upper surface of the pad contains drainage channels which run out to the edges of the circular disc, meaning that rainwater will drain off the upper surface of the disc effectively. Since the discs are made from PVC, they have a soft, flexible, hard wearing, non-slip profile; which means they protect the membrane beneath from damage. They are extremely tough and durable and will also not become brittle in cold weather. The plastic positioning lugs are incorporated into the pad as they plug into a small hole in the centre of the pad or disc.  This ensures that the paving slabs are clearly separated from each other with regular spacing between them and are held securely in place. As with all the Wallbarn supports range there is no mechanical fixing required, the surface is secured by the weight of the slab. Properties Lug width: 2.2mm as standardMaterial: PVCWeight tolerance: 8,000kgThickness: 7mmNumber of drainage holes: 6Lug Height: 15mm