To fight against water infiltration or simply if a flat roof is cracked, a simple solution exists. Here are the step-by-step steps to apply a waterproof anti-leak and anti-crack product
Sweep the roof with a stiff bristle brush to remove accumulated dust and moss.
Identify any roof leaks that require further repair.
Wash the roof if necessary to keep it clean and degreased.
Open the jar and stir the product.
Apply it with a brush in the corners.
(Do not apply if outdoor temperature is below 5° C.)
Then cover the roof surface with a roller in cross passes.
Allow to dry 24 hours before applying the second coat.
Sprinkle slate flakes on the still wet layer and wait 24 hours for complete drying.