Solvent Based Acrylic Block Paving Sealer in Silk finish Silk finish block paving sealer to create a slight sheen on block paved surfaces Smartseal Block Paving Sealer (Silk) has been developed to enhance the colour and aesthetic appeal of new or mature block paving and to give longer lifespan and better overall protection. **NOT TO BE USED ON CLAY PAVERS High viscosity (silk finish) sealer for final coat to block paving Easy to apply by sprayer or roller Resists oil and stain penetration Additional resistance to weed and algae growth BS5750/ISO9000 quality approved block paving sealer Suitable for most patio slabs & block paving Average coverage 3.