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Siberian larch that has been treated with a wood reactive agent that is non-toxic with a grey pigment. We apply this to timber decking and cladding in a factory environment.
The agent reacts with the wood fibres to give a more uniform grey weathered look. This treatment allows for more consistent and faster colour change than normal untreated timber. Upon delivery, if the wood has not been in direct contact with any elements it tends to be a more uniform grey due to the pigment, but if the product has been in contact water e.g rain, snow etc it will look patchy or will have streaks that are darker and lighter in some areas. The patches will disappear as the timber is fully exposed on installation due to contact with the elements such as oxygen, sunlight, water etc but if you want to speed but the process of uniform greying you can spray or wash the timber with water this facilitates or speeds up the reaction.
There is also a tendency to get salty deposits on the surface these can be washed off with water. We recommend washing the cladding with running water to accelerate the weathering and to remove any excess treatment prior to installation this can be done using a garden hose pipe. Washing the cladding avoids excess treatment running off and coming into contact with other materials which may cause reaction especially metals.
The treatment is applied in a factory environment there is no need to reapply any further treatment to make it more grey or uniform – you need to allow the reaction to take place this starts to even out approximately 1 week onwards from exposure.
You need to fix the SertiWOOD pre-aged weathered treated wood with stainless steel fixings, making sure that the wood is not in contact with any other metals or there is no residue runoff onto other materials from the treatment.