Flexiguard is a water based product that will protect any of our porous products against ingrained soiling from dirt, staining from oil & water based contaminants & even moss & algae growth; so great protection against cooking fat stains from barbeques, red wine spillages or oil from the car! The molecules of Flexiguard bond permanently with the grain of the stone/paving, & create an invisible barrier which prevents contaminants from getting into the surface of the product. Once applied you can't tell it's there. It's completely environmentally friendly. Flexiguard will be supplied with a hand pressure sprayer, & you just fill & apply in a fine mist about 30cms away from the surface, & then repeat before it dries. It's very quick & straightforward. Once it dries, which can be very quick depending on conditions, you can walk on it straight away. The surface will generally remain much cleaner than a non-treated surface, & cleaning can be carried out by a hose spray from waist height when needed. As Flexiguard prevents algae growth, you will avoid hours of cleaning stubborn & slippery moss & green growth, which can occur in shaded areas. The coating is permanent & will not wear off unless it's abraded along with the paving itself. Coverage is typically 10-15m 2 with manual pressure spray, but can be as low as 5m 2 for the most porous substrates using manual application.