Silverbrook Mills, 90 Brook Road, Donemanagh, Strabane, Co Tyrone, BT82 0RX

Silverbrook Mills is a complex of mill buildings located on the east side of Brook Road in Donemanagh, Strabane, comprising structures built between the mid-nineteenth century and the 1880s.

The corn mill, built around 1830, is the principal structure. It is two storeys tall and L-shaped in plan, with a single-storey gabled extension to the south built around 1880 as part of contemporary improvements. The flax mill, built around 1850, stands to the north-east and is one-and-a-half storeys tall and rectangular in plan. A detached saw mill, also one-and-a-half storeys, stands directly south of the flax mill. The complex also includes a detached single-storey former dwelling at the centre and a one-and-a-half-storey outbuilding to the south, with a further substantially overgrown one-and-a-half-storey building beyond the carpark.

The buildings are constructed from roughly coursed rubble with fieldstone quoins. Roofs are pitched natural slate with concrete ridge tiles over timber eaves, except the saw mill which has corrugated asbestos sheeting. The corn mill's north-west elevation has replacement concrete eaves. Windows throughout are square-headed timber-framed 4-pane casements supported by stone lintels, except in the former dwelling where they are 2/4 sliding sashes with painted stone sills. Cast-iron half-round gutters and round downpipes provide rainwater drainage.

The corn mill's principal west elevation is single-storey at its left due to the site's topography. It features a large camber-headed opening with brick voussoirs at first floor containing vertically-sheeted timber double doors. The centre elevation contains a similar opening flanked at left by a single window, with a square-headed opening to the right containing similar doors at first floor. The north elevation is blank. The east elevation contains a single window at first floor, with a wall-mounted breast-shot cast-iron waterwheel with brick surround to the shaft opening at ground floor. A projecting wing to the right is blank. The south elevation is abutted at ground floor right by the single-storey extension containing a single window to the south. An unusual carved stone human face appears at the top left of this elevation. The extension's west elevation contains a vertically-sheeted timber door and window, while its east elevation contains a single window.

The flax mill's principal south elevation features a large square-headed opening in a rebated surround with red brick quoins, containing vertically-sheeted timber double sliding doors supported on a timber rail at the head. A wall-mounted cast-iron waterwheel abuts the elevation at right. A pair of fixed metal rooflights are positioned on the roofslope. The west gable contains a round-arched-headed window opening with red brick surround. The north and east gables are blank.

The saw mill has a lime-rendered principal elevation with exposed rubble elsewhere. Window and door openings to the east and west elevations contain vertically-sheeted timber doors. A pitched corrugated metal open shed abuts the building at its north-east.

The former dwelling is single-storey with a pitched natural slate roof and lime-rendered chimneys to the north end. The walls are lime-washed rubble over a painted plinth. The principal west elevation contains two windows and a vertically-sheeted timber half-door. The north gable is blank, the east elevation contains two windows, and the south gable contains a window at ground floor and attic level.

The outbuilding to the south is one-and-a-half storeys, detailed as the mill buildings with a vertically-sheeted timber entrance door to the north. The west gable contains a single attic window, and three fixed metal rooflights are positioned on the north and south roofslopes.

A timber sluice way and tail race to the east of the corn mill are bounded by a rubble retaining wall. The mill complex is set within private grounds, bounded to the north by the mill race and separated from the road at west and carpark at south by recent rubble walling surmounted by timber fencing. Access is provided through a pair of diagonally-sheeted gates supported by circular rubble piers.