Home / Repair checker / Where's the problem? Where's the problem? What's the problem? Where's the problem? Windows and doors Floors and ceilings Roof, loft, chimneys Walls Stairs and close Outside Where is the problem? Stairs Balusters and banisters Entrance passage Close walls Close ceiling Doors Damp stains at roof lights - defective flashings or timber decay Skylights and cupolas Flashings Damp stains by rooflights - condensation due to lack of ventilation in close Close and common stair