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Pole foundations – water damage to underside of flooring
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Wind-blown rain where the underside of flooring is not adequately protected
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Leaks from a plumbing fixture or pipe
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A cladding leak, particularly where a deck is attached to building
Ceiling joists sagging
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Ceiling joist spans too great for the timber size
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Joists have been overloaded
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Poor quality timber
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Cracked or broken timber
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Light roof cladding has been replaced with a heavy roof cladding
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Timber has rotted due to leaks or high roof space moisture
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Build up of sand inside roof space in beachside properties with concrete or clay tile roofs
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Internal wall has been removed
Timber board or plywood ceilings – black staining of timber
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Condensation and mould growth forming on ceiling
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Leak(s) from above the ceiling
Wall framing location is visible
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Condensation forming on the areas between the framing because the wall is not insulated – mould growth is the result of regular condensation
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Mould is forming on the framing locations because a thermal bridge (framing has lower thermal performance than the insulated part of the wall)
Timber boarding, veneered MDF or plywood – black staining
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Evidence of mould growth due to condensation
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Leak in the wall
Pole foundations – underside of flooring visible
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Damage to or missing subfloor insulation, or no subfloor insulation was installed originally
Timber floorboards joints opening
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Flooring has shrunk because: the timber was wet at installation the flooring is subject to high heat such as from sunlight through north-facing windows or a central heating system that maintains a high indoor temperature and low internal moisture level the timber has become drier after floor insulation has been installed central heating has been recently installed the floor has been finished with polyurethane which glues the boards together, and shrinkage when it occurs create wider gaps at every third or fourth board
