Rain entry into redundant chimneys is one of the main causes of structural decay to chimney stacks.
The decay, caused by the natural freeze/thaw cycle of the weather, can ultimately cause great expense.
Water works its way into the mortar between the brickwork and as it freezes, expands, eventually leading to cracks in the brickwork.
The Brewer Chimney Capper offers a simple solution at a low price that prevents rain, bird and debris entry while still allowing nominal ventilation.