Tongue and groove cladding can be fixed in either a vertical or horizontal position. When installing vertically start the project in one corner of the room with the groove side of the board facing the adjoining wall. Cladding can be adhered to a smooth surface or stud work or fixed to timber battens. Cladding can be face fixed or secret fixed by nailing through the base of the tongue at an angle into the stud, wall or batten. When fitting the last board this may need to be trimmed to fit by removing a section from the tongue side of the cladding. If a tight fit the under section of the groove of the cladding can be cut away so the board fits neatly on the tongue of the previous board. This must be glued or face fixed. When fitting cladding in a horizontal position begin with the lowest cladding board at the bottom of the project with the groove nearest the ground, this can also be fixed onto the surface by nailing at an angle through the base of the tongue. Work upwards and complete the project with the last board being cut to fit if necessary.