For over 20 years, timber decking has been the preferred option for balconies. Since 2002, the introduction of WPC (Wood Plastic Composite) decking boards has been a higher performance option. With still a low fire rating of between D1 and B1, this offered some no rot benefits. Both of these are now obsolete under the new regulations. With now a minimum Class A Fire rating being the requirement, this is forcing specifications into un-chartered territory.
With building works still needing to be completed, only Aluminium decking has been available. This meets the Class A fire rating but has some drawbacks.