NWRB offer solutions to every household repair problem, below we have listed some of the most common issues our clients face. Chimneys   Chimney stacks should be checked regularly for any potential problems. By keeping an eye on their condition or change of condition, repairs can be carried out as soon as they are required. Checking the condition of a chimney stack From inside Mortar or flashing can deteriorate with age and be in need of repair or replacement. It is useful to inspect the ceiling after a long period of rain, as the source of a leak is easier to trace. If stains are found, try tracing the source of the stain as it is not always directly overhead. Check inside the roof space for signs of dampness. Water can penetrate the roof surface and travel between the roof and ceiling level before finding its way through the ceiling. Water staining on the ceiling or on the chimney breast walls will indicate dampness getting through. Dampness here indicates problems with the flashings causing the water to penetrate and run down the walls. If there is water staining inside a room near a fireplace lower down the walls, then the problem could be due to the flue and the fireplace being completely sealed. Dampness inside the home can sometimes indicate problems associated with the chimney stacks. Outside at ground level Outside, check the roof by inspecting at ground level. If chimney pots are broken, cracked or missing they are easy to spot. Only the edges of the flaunching can be seen, but check for deterioration or cracks in the mortar holding the pots in position. Use binoculars to scan the surface around the stack as carefully as possible, from all angles - front, back and sides where applicable. Look for mortar missing from between bricks on the stack itself. Check that the stack is still in a vertical position and not leaning. Look out for bulges in masonry or blown rendering or pebbledash.