Treatment of Schists and Slates
Wash with detergent LEM 3 diluted in water (at a ratio of two covers for each liter of water, or if deemed necessary, may increase the proportion).
Wash again with water.
When the stone is cleaned thoroughly, let dry at least one or two days.
Apply insect repellent to water and oil IDEA XC pure with a brush evenly. Let dry and repeat the operation to go to the stone does not absorb more.
Let dry for twenty-four hours without stepping.
Maintenance: Wash weekly or twice a week with the product LEM 3 diluted in water.