Flame Delay® FX Pro has now been added to the range alongside Flame Delay® PT. The biggest differences are that the PT version has to be finished with a stain or paint to retain its fire-retardant properties, and it requires maintenance every four to six years. What makes FX Pro revolutionary is that the fire retardant becomes completely fixed in the wood thanks to the polymer technology used. This renders both finishing and maintenance unnecessary. If you’d like to read more about Flame Delay® FX Pro, click here.