The Ronseal Thompson's Patio & Block Paving Seal protects and seals patios from the weather in just one hour. The powerful formula will resist algae growth and protects against oil and fuel stains. Our Natural finish leaves a barely there finish, so your patio is protected without leaving a sheen. Suitable for use on: granite, limestone and sandstone block paving and flag stones.1 x Ronseal Thompson's Patio & Block Paving Seal Satin 5 litreAdditional Information:• Clean Type: Sealer• Size (L): 5