Factory treatment

Applying SiOO:X in controlled conditions

Timber pre-treated with SiOO:X can be purchased from our distributors who have industrial factory coating equipment. Alternatively, timber can be supplied to our specialist coating partners who are equipped with coating machines and can apply SiOO:X in controlled conditions.


Our distributors and partners are aware of the need to achieve good penetration of the SiOO:X treatment into the timber and that sawn surfaces, or at the least 60 grit sanded surfaces, are essential. The treatment of all surfaces is strongly recommended. Applying SiOO:X treatment to planned smooth surfaces is not recommended.


Whether you are a private customer with an individual project, a timber supplier, or a contractor with a large project, your treatment needs can be met. Whilst hand treatment works well if applied to professional standards, the advantages of factory treatment are significant. When a large quantity of timber needs to be treated to tight deadlines and to meet conformance requirements, factory treatment comes into its own. Even more so when construction and assembly are taking place over the winter months and in difficult weather conditions. Our distributors and coating partners are able to process your timber with a factory application of SiOO:X Impregnation in compliance with Sioo application standards.


Construction and Assembly

  • When delivery is made to site the treated timber should be stored ready for use in a dry storage area with all packing material removed.
  • All cut and exposed board edges must be treated with an end-grain sealer, either using the SiOO:X End Grain Sealer or a quality proprietary product. Exposed end grains are a common source of moisture ingress.
  • Use stainless steel fixings.
  • Our main distributors have extensive experience in advising clients on material selection and careful detailing, which are key to ensuring that every project looks fantastic, and meets its performance objectives.


Timber is a biogenic material – it is produced by living organisms and it has an intimate relationship with moisture. The engineering of timber cladding facades needs to encompass a number of performance issues and in particular, attention needs to be given to moisture movement and weathering. If in doubt professional advice should be sought.


Factory application is carried out with the equipment of varying sophistication, some with production lines incorporating automatic feeders and stacking, drying, and vacuum stages. Sioo Wood Protection AB works with some of the most sophisticated coating applicators in the UK and Ireland, all of them skilled in applying the treatment efficiently and effectively.


We have had considerable experience with the factory application of our products supplying to projects across Scandinavia, the UK, and Ireland.

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