Roof Trusses Constructed with Steel Instead of Timber
Roof Trusses Constructed with Steel Instead of Timber is a high-severity structural defect SURE inspectors have documented across 1 inspection report.
Causes
- Lack of engineering design and certifications for the alternative material (steel framing).
- Use of different construction material (steel) than specified in approved plans (timber).
- Use of different construction material (steel) than specified in approved plans (timber roof truss).
- Lack of engineering design and certifications for the alternative material (steel roof truss).
- Use of different construction material (steel) than specified in approved plans (timber LVL).
Symptoms to look for
- Visual observation of steel framing where timber was planned.
- Visual observation of steel roof framing where timber trusses were planned.
- Visual observation of steel flooring joists where timber LVL was planned.
Remedies
- These documents should be reviewed and verified against the construction on site to ensure compliance with the approved structural design and relevant standards.
- The steel fabricator should provide the relevant engineering design drawings and certifications for the steel wall framing.
- The steel fabricator should provide the relevant engineering design drawings and certifications for the steel roof truss.
- The steel fabricator should provide the relevant engineering design drawings and certifications for the steel flooring.
Get an inspector through this property.
Findings in this category skew high severity. If you are under contract, we can usually book inside the cooling-off window. Every inspection includes 12 months of free advice.
Curated entries in Structural
- Curated 1–5/5External Wall Cracking Due to Settlement
Cracks in external masonry walls caused by ground movement or differential settlement of the footing system. Most observations are Category 0–2 under the BCA/AS 2870 scale (hairline to 5mm width) and represent cosmetic or minor structural concern, but a small proportion progress to Category 3–5 where structural engineer involvement is required. The crack pattern, location, and change over time determine whether this is a maintenance item or a structural event.
- Curated 1–4/5Obstructed Roof Void due to Insulation
Insulation, HVAC ducting, sarking, or stored items in the roof void prevent a complete inspection of ceiling joists and surrounding timbers. Our inspectors record this limitation because the obstructed zone could harbour undetected timber pest activity, moisture damage, or structural defects - none of which can be reported without visual access.
- Curated 1–5/5Restricted Roof Void Access due to Insulation
Insulation, sarking, HVAC ducting, or low clearance in the roof void prevents a complete visual inspection of ceiling joists, top plates, and perimeter timbers. When these areas are inaccessible, our inspectors cannot confirm whether timber pest activity, moisture damage, or structural defects are present - the limitation itself is a finding that the buyer needs to understand.
- Curated 1–5/5Timber Fungal Decay (Rot) in Fascia and Barge Boards
Fungal decay (wet rot or dry rot) in fascia and barge boards develops when timber is repeatedly wetted and unable to dry out - typically where paint has failed, where roof drainage is defective, or where the boards are end-grain exposed. Left unchecked it spreads into adjacent framing and rafter tails, converting a cosmetic repair into structural work.
- Curated 1–5/5Patched Wall Cracks
Previously cracked walls that have been patched or filled indicate prior ground movement or settlement. While the cosmetic repair may look sound at the time of inspection, the underlying cause - reactive soil movement, differential settlement, or footing inadequacy - may not have been addressed. Patched cracks that re-open signal ongoing movement and warrant structural assessment under AS 2870.
- Curated 1–5/5Leaning Fence Sections
Fence sections leaning out of plumb indicate post footing failure, material deterioration, or soil movement. A significantly leaning fence poses a safety risk - particularly for children - and will continue to worsen without intervention.