General description The Thompsons Patio and Block Paving Seal is designed to protect and seal patios from weather damage in just one hour. Its powerful formula effectively resists algae growth and protects against oil and fuel stains, ensuring your outdoor surfaces remain in excellent condition. The natural finish leaves a barely noticeable sheen, allowing your patio to maintain its original appearance while being well-protected. Technical specifications Volume: 5 Litres Coverage: 7.5 m² per litre Suitable for: granite, limestone, and sandstone block paving and flag stones Preparation Ensure block paving, jointing sand, and paving slabs are dry before application. Scrub the surface with a stiff bristle brush to remove dust and dirt. If mould or algae is present, use Thompson's Advanced Patio & Block Paving Cleaner. For oil stains, use Thompson's Oil & Drive Cleaner. Rinse off any cleaners and ensure the surface is dry before applying the seal. Application Best applied on a dry day