An invisible coating to make wood ‘fireproof’

By Nanyang Technological University
TechXplore
August 18, 2022
Category: Wood, Paper & Green Building
Region: International

An invisible coating that can “fireproof” wood has been invented by scientists at Nanyang Technological University, Singapore (NTU Singapore). With the popularity of mass engineered timber growing in the construction industry, one of the biggest challenges for wood is its flammability. When untreated, wood or timber can burn and combust easily. …Current practices to protect the interior of wooden buildings from fires require the use of fire-retardant panels … or paint-like fire-retardant coatings, both of which conceals the natural wood grain of timber. In comparison, the new invisible coating developed by NTU allows for natural beauty of timber to shine and yet can still provide a flame barrier when “activated” by fire. …When heated up by a flame … the coating to becomes a char that expands to more than 30 times its original thickness. This char prevents the fire from combusting the wood underneath, as shown in an accredited lab test.

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