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8. BUILDING PHYSICS
8.2.5 Ignition temperature of LVL
Like all wood products, LVL is classified as a combustible ma-
terial. The ignition temperature of LVL is about 270 °C, when
exposed to flame. Spontaneous ignition does not occur in tem-
peratures below 400 °C. The ignition temperature of wood is
also dependent on the duration of exposure to high tempera-
ture. Ignition temperature decreases as the duration of expo-
sure increases. After more than 20 hours of exposure, there is
an ignition risk of wood products at temperatures above 120-
150 °C
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.
8.3 AIRTIGHTNESS
LVL-C panels are airtight beyond what can be measured. In
the building physics design of structures, it is essential pay at-
tention to the joints and seals between the panels and other
structures to ensure the airtightness of the entire building en-
velope. This can be achieved, e.g., with careful installation of
sealant tapes that are durable enough for the design service life
of the building.
LVL-C panels have been utilized, e.g., in 3-layer CLT wall
panels as the middle layer of the product tomake them airtight.
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