Wood fiber underlayment FAQ

16. Is the underlayment combustible?
On our website you can watch a video comparing the combusting capacity of various insulation
materials. This example shows that, at combustion, the wood surface becomes charred and
prevents the spread of combustion to deeper layers for a certain time. You will notice a distinct
difference in combustion of other insulation materials made of plastics and minerals. In
addition, in case of fire, wood insulation does not emit toxic gases that distinguish it from
many other insulation materials.
In general, the building fire safety is not so much determined by the combustibility of the
materials used in the construction as by the fire resistance of its structural materials. In other
words, fire resistance is characterized by a period of time in which the structure will lose its
bearing capacity or integrity. The fire resistance of properly designed building structures of
wood fiber materials of any combustibility group can be brought up to class F90 (according to
DIN 4102). This means that in case of a fire there is at least a 90 minute window during which
people can escape and save their most valuable possessions.