The architect's choice

Environmentally-friendly products

Wood is a 100 percent renewable resource that grows naturally and can be harvested responsibly. It sequesters carbon efficiently and has low embodied energy. Sioo are developers and suppliers of wood protection products using silicon technology.


SiOO:X is a quality assured and environmentally-friendly, water-based system engineered to protect wood of durable species .  For use in external conditions timber should be selected for it’s biodegradation resistance (natural durability) with minimum durability Class 3 (according to BSEN 503-2) specified for external cladding or decking purposes.


The SiOO:X system is used as a surface protection system, which is suitable for above ground applications in Use Classes 1, 2, 3.1 and 3.2 according to EN 335 Part 2. If additional protection is thought necessary for Use Class 3.2 applications, then the SiOO:X Wood Protection System can be applied to preservative treated wood and to thermally treated wood. When used in interior applications SiOO:X has the huge advantage of being VOC-free, since it is water-based and uses silicate technology. Disposal at end of life is not a problem, since the product is non-toxic.


We have produced a significant breakthrough in wood protection technology which solves the traditional problems of caring for wood. SiOO:X natural ingredients centred around the mineral silicon combine to quickly protect many species of wood enhancing both appearance and performance.


SiOO:X has been specified in Scandinavia by world leading architects and end users for over a decade because of its unique combination of advantages, particularly its sustainability and aesthetically pleasing appearance.



Specified and used in the UK for many years by architects, constructors and end users, particularly for cladding applications, the strength of the SiOO:X products in giving long life protection against: uneven weathering and discolouration, the impact of algae, fungus, spore and surface rot, splintering of the timber surface, poor ultimate protection of people, animals and the environment; is being seen and sought after.


SiOO:X treated timber is beautiful to look at and it gets brighter, not darker, with age. The unsightly patchy weathering of exterior wood cladding can be minimised.


IIn wet and humid maritime climates, such as apply in the United Kingdom and Ireland, there are particular challenges that need to be understood and good practices which need to be observed . Good design detailing, quality timber selection and supply, adequate surface preparation, professional treatment application and in-service maintenance are all vital to achieving a good finish and long life.


The versatility of SiOO:X allows for factory finishing or onsite application, protecting new wood or rejuvenating damaged wood back to health. Factory finishing should always be the preferred choice for treatment to achieve best results and Sioo are placing prime emphasis on this in the UK and Ireland.


Over the life cycle SiOO:X is a highly economical investment and gives lower cost than conventional treatments.