Protect your outdoor surfaces with confidence. The Spear & Jackson Paving Sealant and Proofer is specially formulated for paths, patios, and external stone surfaces. This water-based solution is effective on both porous and non-porous stones, safeguarding them against water, oil, and organic growth like algae. It helps shield your surfaces from harsh weather conditions, allowing for easier cleaning and maintenance while keeping them looking their best. The product offers coverage of 200-400ml per square metre, with 2.5 litres covering up to 12.5 square metres. It protects against water, oil, and organic growth such as green algae and mould.