Are steel frames termite-proof?
Understanding steel framing · 4 min read · Published
Short answer
Steel frames are not a food source for termites, so termites cannot damage the structural frame the way they can damage timber. BlueScope describes frames made from TRUECORE® steel as termite and borer proof. The building still needs any termite management the NCC requires for its other timber components, such as doors, joinery and some linings.
Why termites matter in Queensland
Termites are a common risk to timber-framed buildings in warm climates. When they get into a timber frame, the damage is often hidden inside wall cavities until it is serious.
What steel changes
Termites eat cellulose. Steel contains none, so the structural frame is not food. That removes the most expensive part of termite damage from the equation: the frame holding the building up.
What steel doesn't change
- Termites can still reach timber doors, skirting, architraves, cabinetry and some fixtures
- The NCC's termite risk management requirements apply to the building, not just the frame
- Regular inspections are still sensible, especially where other timber is present
Your certifier confirms what termite management the building needs. Steel framing reduces risk to the structure; it does not replace the building's termite requirements.