Damage to a structure during construction through moisture or fire leads to potential losses/delays to contract and expensive remediation works or even complete loss of structure. A key advantage of LSF when compared to timber frame structures is fire performance and protection from weather during the construction process.
Health and Safety Executive (HSE) Document HSG 168 - Fire safety in construction, provides excellent advice on the steps to be taken to reduce the risk from fire. The document highlights the three elements required to start a fire, and notes that removing one of the three negates that risk.
Constructing in light steel frame has limited combustible materials (generally floorboards only) compared to timber systems therefore reducing the fuel for the fire and limiting risk of damage. This risk is reduced further when concrete or screed on steel deck is used rather than a timber deck.
The following should be noted with regards to the performance of a LSF structure during construction:
Moisture
Unaffected by short term exposure to moisture and no shrinkage, greatly reducing costly and unsightly re-work.
Dimensional stability
Movement with steel is minimal compared to other materials and therefore predictable.
Accuracy
Manufactured and installed to higher tolerance than traditional methods of construction, meaning other components are likely to fit first time and without the need for adjustment.
Non-combustible
No risk of steel contributing to fire load during, or after construction.
