Dr. Oliver Kinnane:

Yes. Around Europe multistorey buildings are now being built in timber. In Scandinavia and Canada buildings of up to 30 or 40 storeys are being built in mass engineered timber. It is also an issue for low-rise buildings. Even the separation of two residences in a duplex requires a non-combustible intermediate floor between them. This generally means the lower residence will be concrete and the upper residence may be timber.