A premium grade, low viscosity dust-proofer and hardener specially formulated to chemically seal concrete and harden its surface. Suitable for sealing and hardening concrete floors, both new (minimum 28 days old) and old, in garages, warehouses, factories, and workshops. Bond It DUSTPROOFER & HARDENER penetrates into the concrete to produce a non-dusting hard wearing surface with improved resistance to oils, greases, and water. For application, wear gloves, boots, and goggles. Ensure all surfaces are clean, dry, and free from oil, grease, paint, or polish to maximize effectiveness. If necessary, use Bond It BRICK & PATIO CLEANER to remove stubborn stains before washing and applying. Apply uniformly using a brush at a rate of 3-5m² per litre, ensuring no puddling and working the product into the floor with a firm action. Allow the first coat to cure overnight before applying a second coat, which is usually sufficient for most floor types. The floor must be washed down with clean water 24 hours after application to prevent efflorescence. Further coats can be applied, allowing the previous coat to cure before application, remembering to leave at least 24 hours before washing down.