Resin bonded surfacing is non-permeable and must be laid on a non-porous fine wearing course asphalt or concrete base. With resin bonded paving, soakaways and proprietary drains must be installed to prevent run-off which could lead to flooding.
Resin “bonded” paving is made by sprinkling loose aggregate onto resin. It’s a great, low-cost option for redevelopment projects or for giving a project an instant facelift. However, it’s not as durable as resin bound paving: the bonded aggregate particles may loosen over time depending on the aggregate size; the depth is generally 3mm.
Tar and Chip (VLS Surfacing)
Tar and Chip dressing also referred to as Leochip or VLS dressing is mechanically sprayed. Tar and Chip dressing creates a stable mosaic of stone chippings, securely attached to the surface by a bitumen emulsion. Quite simply, the bitumen emulsion glues the stone chippings to the surface. The chippings may look loose, but are firmly held in place by the bitumen.
Tar and Chip should be applied at temperatures in excess of 10°C and dry conditions should prevail for at least 12 hours after application.