Where's the problem?

  • Gaps between internal steps - treads should lock together - serious and urgent

  • Stair treads off-level - subsidence in close or rot in timber supports to landing - serious

  • Stair tread cracks - may be sign of serious problem

  • Stair tread cracks - may be crack in previous surface repair

  • Worn stair treads - resurface if hazardous

  • Gaps between outside steps - mortar washed away or metal supports rusted