All Chairs produced by Alfresco furniture are Tanalized to protect the wood from rot. the tanalith gives the wood a minimum of 15 years protection left outside 365 days of the year.
The wood can be painted but not when it has been tanalized as the tanalith can blled through the paint and leave brown marks under the surface of the paint. A quality paint can be purchased from Dulux as this is flexible and expands with the wood or shrinks depending on the season. More information can be found at Dulux