It is important to specify the correct dome material for your application:
Solatube BBA Certified polycarbonate roof domes are Tp(a) rated with regard to behaviour in relation to fire and meet the UK Building Regulations (Approved Document B) with regard to fire spread at roof level. As such, they may be installed without restriction* as to their roof position on all UK public, commercial and residential buildings.
In order to guarantee compliance with UK Building and fire Regulations for our product category, we recommend specifying polycarbonate roof dome material.
Alternatively, for applications where Building Regulations permit non-Tp(a) rated roof domes, acrylic (PMMA) roof domes are available. Please note, acrylic domes are not covered by the BBA Certificate and restrictions may apply as to their placement on a roof.