Driveway Cleaning - Swansea, Neath & Llanelli areas. Swansea Clean & Seal offers Pressure Washing Services for your Patio Cleaning, Blockpaving and Imprinted Concrete Drives and to the very Best Standards. We specialise in not just Cleaning but offer a Cleaning & Sealing service for your Driveways and Patios. If you have Sandstone, Limestone or a Slate Patio that needs Cleaning & Sealing we can help you Guaranteed. Is your Imprinted Concrete Drive looking worn and lost its Colour ? We can help and 'Re-Colour' your Drive making it look like nearly new.