Cuprinol Total Deck offers a natural finish that protects decking all year round. Its unique double action formulation restores and protects grey and weathered wood. Cuprinol Total Deck is easily applied with a garden broom, which can be washed after use and re-used. This innovative new decking solution not only pre treats decking but gives a protective finish. Colour Clear. Drying time 2-6 hours. Coverage 22m per 2.5 litres (1 application). Coverage can vary depending on application method and the condition and nature of the surface.