Insulation
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Framing outline is visible on the cladding on cold mornings
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Condensation is forming on cladding where there is insufficient or no insulation
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Condensation forming at the framing locations when the wall is well insulated due to thermal bridging of the framing
Subfloor – no insulation
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Insulation was not a requirement when the house was built; insulation was required but never installed; the insulation has fallen out; the insulation has been blown out by wind
Subfloor – poorly installed insulation
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Insulation was incorrectly installed, with gaps and spaces, or has been damaged by tradespeople
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Wind damage
Subfloor – reflective foil only installed
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Reflective foil was commonly used when the house was built; the foil has become dirty and tarnished which reduces its effectiveness
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Foil is damaged (usually by wind); there is no still air space between foil and floor – air blowing through the gap makes insulation ineffective
Pole foundations – subfloor insulation damage
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The insulation was incorrectly installed; there are gaps between the insulation and subfloor framing
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There was no sheet lining under the insulation, and it has been damaged or blown out by wind or has been damaged by tradespeople
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
Subfloor services – damaged wiring
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Age of wiring
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Poor installation
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Wire sheathing in contact over a long period with polystyrene insulation
Wiring passing through polystyrene subfloor insulation
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Incorrect installation – over long periods, polystyrene can damage electrical cabling
Roof space – no insulation
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Insulation was not a requirement when the house was built (or has never been installed)
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Loose-fill insulation has been shifted by wind or activity by house occupants or tradespeople, or insulation has been removed when work done on the house
Roof space insulation has gaps, creases, folds or areas missing
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Poor initial installation
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Insulation has become displaced due to air movement/wind in the roof space/occupant activity – this typically occurs with loose-fill, blown-in insulation
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Loose-fill, blown-in insulation has settled and is thinner than it was originally
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Activity by house occupants or tradespeople has displaced insulation
Roof space – insulation is touching the flexible roof underlay
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This is likely to occur at the edges of the roof, particularly with low pitched roofs, where roof framing does not have enough depth to provide space for the insulation
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The insulation has become displaced due to air movement/wind in the roof space/activity by occupants or tradespeople – typically occurs with loose-fill, blown-in insulation
