Reclaimed Wood Division BROWN BOARD (Click on image for enlargement) Brown Board is a name we give to a wide variety of board products. It does not represent the colour as much as what it is, which is mainly an interior board or surface of a board that would not have seen any weather. If exterior board siding, for some reason, does not meet that grade it's reverse side or interior face may meet our brown board specifications. This surface has a lot of patina or deeper hues of colour from aging over many decades.