The last decade a considerable increase in façades/cladding applications have been linked to modified wood. It is becoming very common to use cladding products based on thermal modification using species such as spruce, poplar, ayous, and limba. Often these treatments alter the equilibrium moisture content and chemical composition and products are optimized in view of dimensional stability and decay resistance. Fire safety is of high importance for building with wood. Not only the structural building elements, like cross-laminated timber or light timber-frame structures are relevant to be assessed, also the building envelope needs consideration. A range of performance testing is available to asses fire resistance but this paper focuses on the cone calorimeter method. A variety of commercial products have been assessed and benchmarked with non-modified wood including some common (tropical) hardwoods used for cladding. Regarding the impact of (thermal) wood modification on the fire resistance of fa-cades/cladding, it’s essential to understand that while certain aspects of wood performance can be improved, it might have an impact on its fire resistance. To improve the fire resistance of wood facades/cladding, additional fire-retardant treatments or coatings can be applied. These treatments are designed to inhibit or delay the ignition and spread of fire. The overall performance of wooden façades/cladding as part of the building envelope could benefit from combining wood protection options to enhance resistance against decay and to improve fire safety. Hence solutions for fire retardant treatments with adequate weather resistance could benefit from wood preservation and wood modification treatment technologies.