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Roof framing – borer

Rafters or ridge beams sagging

  • Rafter spans too great for the timber size and/or roofing type, or roof framing has been overloaded

    How to repair

  • Poor quality timber, or cracked or broken timber

    How to repair

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Ceiling joists sagging

Ceilings – timber boards cupping

  • Cupping occurs because boards are drier on one side than the other resulting in uneven shrinkage, so cupping may indicate a higher moisture level in the ceiling space or a higher moisture level in the room

    How to repair