Cuprinol Wood Preserver - Clear - 5LCuprinol General Purpose Wood Preserver is a colourless formula designed to provide deep protection for both interior and exterior wood surfaces. This preserver offers excellent protection against decay, mould, and blue staining fungi. Its low odour formula makes it more pleasant and convenient to use. Ideal as a basecoat, it ensures your wooden surfaces are well protected before applying paint, stain, or varnish. Key Information Prevents Rot & Decay