Restoring discoloured uncoated timber cladding

Restoring discoloured uncoated timber cladding

Date Published

6 September 2022

Document Type





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There has been an increasing trend to use uncoated wood cladding as the exterior facade to new building projects, both domestic and commercial. Such facades can provide an attractive, long-lived and above all, natural alternative to manmade cladding options. Uncoated cladding has been used primarily because of its low maintenance requirement, on account of the absence of a decorative finish. Many architects choose to specify uncoated cladding because they want the wood to weather to a silvergrey appearance in order to meet their design aims.

Key Information

This research has provided information relating to the main in-service causes of discoloration on uncoated exterior timber cladding. Based on empirical information derived from a number of case studies, the research team have identified a number of effective methods of remedying its occurrence.

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