Over a period of time with any form of masonry there is moisture that accumulates inside of the masonry structures. The moisture escapes the interior of the masonry in the form of a white caulk like haze called efflorescence or white/yellow thick calcite deposits. PPE’s process starts with an application of a product that removes all stains. PPE will then rinse off the masonry with low pressure, ensuring no cleaning products are left in the masonry or none of the masonry is destroyed by the cleaning process.