Architects are increasingly opting for wooden facia's instead of render because it is cheaper. 

Wood turns silver / grey after one year exposed to Ultra violet light. This is due to oxidation, of the wood surface which makes it porous and allows water penetration. This combination of rainwater and temperature are the ideal conditions to grow spirillum black mould.

The wood then turns black and become unsightly... Just look in any shopping centre and you will see how ugly it becomes.

WWG contains a micro technology formula which binds the surface of the wood providing a hard wearing, invisible protective seal against water penetration.

The black mould in wood is caused by spirillum mould which is naturally found in rainwater hence the grey / blackening.

By preventing rain water penetration we remove this eventuality.