Essential Roof Cleaner is acid-free. Many competing cleaning products will work on your roofing surfaces, but many of the power or pro formulas may contain corrosive acids that can etch and harm the concrete or natural stone surface. Use Essential Roof Cleaner to revitalise the appearance of your roof. When diluted 1:1, it can provide up to 50m2 per 25L. Coverage regions will vary based on surface contaminants. Available in 5L and 25L. HOW TO APPLY: 1. Remove any loose debris from the work area, and ensure you have adequate personal protection, i.e gloves , suitable protective eye-wear , face mask & clothing. 2. Essential Roof Cleaner is to be used neat or diluted up to 1:4 with clean water - always perform a small test area to determine suitable dilution rate and dwell time. 3. Carefully transfer the cleaning fluid from the bottle to a sprayer or watering can. If these containers are not available then cleaning fluid can be used directly from the bucket. Apply generously. 4. The cleaning fluid needs to be left on the surface for at least one hour, during that time the surface must not be allowed to dry out. If necessary mist with additional cleaning fluid or with clean water to prevent the roof from drying. 5. Wash down with clean water after at least one hour dwell time, the treated area can be washed down with clean water first to neutralise the cleaner before then power washing off for perfect results. Please note: As cleaning fluid can hurt or even kill flora, avoid splattering it on your garden or lawn grass. If this is inevitable, then rinse well with clean water to dilute the cleaner. For heavily contaminated surfaces with heavy moss and algae deposits, we recommend applying it, allowing it to work, and then pressure washing it off. In regions with light soiling, a 1:4 mixture of Essential Roof Cleaner and fresh water is recommended. Allow it to sit for up to 4 hours before washing it off. DATASHEET