Protect timber from the inside out with Cuprinol 5 Star Complete Wood Treatment, a professional-grade wood preservative formulated to defend against woodworm, wet rot, dry rot and fungal decay. Suitable for use on both interior and exterior timber, it provides long-lasting protection while helping to preserve the strength and integrity of the wood. Its deep-penetrating formula is ideal for treating structural timber, roof timbers, floor joists, fence panels, sheds, gates, decking and other outdoor timber exposed to the elements. It can also be used as a preventative treatment on sound timber or to help control existing infestations when applied as directed. Easy to apply by brush, this complete wood treatment absorbs into the timber to provide effective protection without significantly altering the natural appearance of the wood. Once dry, treated timber can be painted, stained or varnished where appropriate, making it suitable for a wide range of repair, maintenance and renovation projects.