Microporous preservative prolongs the life of any wooden building, even if it has been immersion treated or pressure treated. It repels water while allowing the timber to breathe. This advanced water based acrylic formula is easy to clean and almost odourless. The translucent finish enhances the natural grain of the wood. This preservative is suitable for planed or sawn timber and easily applied with a brush or a garden sprayer. Two coats are normally required with a further coat after approximately 1 to 2 years. One litre covers approximately 8 to 12 square metres. Coverage varies according to the smoothness and porosity of the timber so you should order more than you need. On average five litres covers a 12x8 shed with two coats and ten litres covers a 10x20 with three coats. Colours are only as accurate as reproductive techniques allow. The price includes free mainland delivery to England, Wales and southern Scotland.