Cuprinol Wood Preserver Clear is a colourless, general-purpose preserver for interior and exterior use before painting, staining or varnishing. It gives deep penetrating protection to sound wood against decay, mould and blue-staining fungi. The low-odour formulation has been specially developed with low aromatic solvents to make it more pleasant and convenient to use. Apply by brush or dip - 1 to 5 days drying time. Provides up to 5 square metres of coverage per 1-litre tin. Pack size: 1 litre.