Liberon exterior wood protector is a versatile product which gives a water and UV resistant finish to most types of exposed timber. The clear finish will not alter the natural colour of the wood but will form a protective barrier against weathering sunlight and extreme temperatures of -10°C to +35°C. It is also ideal for use on both horizontal and vertical timber making it suitable for pergolas balustrades fences garden furniture and summer houses. Offering long lasting protection for up to 3 years on vertical timber in most climates and up to 18 months on horizontal timber it is quick drying and easy to apply - See more at: http://www.homecareessentials.co.uk/acatalog/Liberon_Exterior_Wood_Protector_Oil_Clear_5_Litre.html#sthash.bPAkFatU.dpuf